Re: [PATCH V7 00/26] mm/mmap: Drop __SXXX/__PXXX macros from across platforms
On 7/12/22 01:44, Andrew Morton wrote: > On Mon, 11 Jul 2022 12:35:34 +0530 Anshuman Khandual > wrote: > >> This series drops __SXXX/__PXXX macros from across platforms in the tree. > > I've updated mm-unstable to this version, thanks. I skipped the added-to-mm > emails to avoid wearing out people's inboxes. > > Reissuing a 26-patch series N times is rather noisy. Please prefer to send > incremental > fixes when changes are minor. It makes it so much easier for reviewers to > see what > happened. Sure, got it, will follow next time. ___ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V7 26/26] mm/mmap: Drop ARCH_HAS_VM_GET_PAGE_PROT
Now all the platforms enable ARCH_HAS_GET_PAGE_PROT. They define and export own vm_get_page_prot() whether custom or standard DECLARE_VM_GET_PAGE_PROT. Hence there is no need for default generic fallback for vm_get_page_prot(). Just drop this fallback and also ARCH_HAS_GET_PAGE_PROT mechanism. Cc: Andrew Morton Cc: linux...@kvack.org Cc: linux-ker...@vger.kernel.org Reviewed-by: Geert Uytterhoeven Reviewed-by: Christoph Hellwig Reviewed-by: Christophe Leroy Acked-by: Geert Uytterhoeven Signed-off-by: Anshuman Khandual --- arch/alpha/Kconfig | 1 - arch/arc/Kconfig| 1 - arch/arm/Kconfig| 1 - arch/arm64/Kconfig | 1 - arch/csky/Kconfig | 1 - arch/hexagon/Kconfig| 1 - arch/ia64/Kconfig | 1 - arch/loongarch/Kconfig | 1 - arch/m68k/Kconfig | 1 - arch/microblaze/Kconfig | 1 - arch/mips/Kconfig | 1 - arch/nios2/Kconfig | 1 - arch/openrisc/Kconfig | 1 - arch/parisc/Kconfig | 1 - arch/powerpc/Kconfig| 1 - arch/riscv/Kconfig | 1 - arch/s390/Kconfig | 1 - arch/sh/Kconfig | 1 - arch/sparc/Kconfig | 1 - arch/um/Kconfig | 1 - arch/x86/Kconfig| 1 - arch/xtensa/Kconfig | 1 - include/linux/mm.h | 3 --- mm/Kconfig | 3 --- mm/mmap.c | 22 -- 25 files changed, 50 deletions(-) diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index db1c8b329461..7d0d26b5b3f5 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -2,7 +2,6 @@ config ALPHA bool default y - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_32BIT_USTAT_F_TINODE select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 8be56a5d8a9b..9e3653253ef2 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -13,7 +13,6 @@ config ARC select ARCH_HAS_SETUP_DMA_OPS select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC select ARCH_32BIT_OFF_T select BUILDTIME_TABLE_SORT diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index e153b6d4fc5b..7630ba9cb6cc 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -24,7 +24,6 @@ config ARM select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB || !MMU select ARCH_HAS_TEARDOWN_DMA_OPS if MMU select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAVE_CUSTOM_GPIO_H select ARCH_HAVE_NMI_SAFE_CMPXCHG if CPU_V7 || CPU_V7M || CPU_V6K select ARCH_HAS_GCOV_PROFILE_ALL diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 1652a9800ebe..7030bf3f8d6f 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -45,7 +45,6 @@ config ARM64 select ARCH_HAS_SYSCALL_WRAPPER select ARCH_HAS_TEARDOWN_DMA_OPS if IOMMU_SUPPORT select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAS_ZONE_DMA_SET if EXPERT select ARCH_HAVE_ELF_PROT select ARCH_HAVE_NMI_SAFE_CMPXCHG diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig index 588b8a9c68ed..21d72b078eef 100644 --- a/arch/csky/Kconfig +++ b/arch/csky/Kconfig @@ -6,7 +6,6 @@ config CSKY select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_QUEUED_RWLOCKS select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 && $(cc-option,-mbacktrace) diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig index bc4ceecd0588..54eadf265178 100644 --- a/arch/hexagon/Kconfig +++ b/arch/hexagon/Kconfig @@ -6,7 +6,6 @@ config HEXAGON def_bool y select ARCH_32BIT_OFF_T select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_NO_PREEMPT select DMA_GLOBAL_POOL # Other pending projects/to-do items. diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 0510a5737711..cb93769a9f2a 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -12,7 +12,6 @@ config IA64 select ARCH_HAS_DMA_MARK_CLEAN select ARCH_HAS_STRNCPY_FROM_USER select ARCH_HAS_STRNLEN_USER - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO select ACPI diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index ed55abcc3dbd..53a912befb62 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -9,7 +9,6 @@ config LOONGARCH select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI select ARCH_HAS_PHYS_TO_DMA select ARCH_HAS_PTE_SPECIAL - select ARCH_HAS_VM_GET_PAGE_PROT
[PATCH V7 25/26] sh/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Yoshinori Sato
Cc: Rich Felker
Cc: linux...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/sh/Kconfig | 1 +
arch/sh/include/asm/pgtable.h | 17 -
arch/sh/mm/mmap.c | 20
3 files changed, 21 insertions(+), 17 deletions(-)
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 5f220e903e5a..91f3ea325388 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -12,6 +12,7 @@ config SUPERH
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HIBERNATION_POSSIBLE if MMU
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_WANT_IPC_PARSE_VERSION
diff --git a/arch/sh/include/asm/pgtable.h b/arch/sh/include/asm/pgtable.h
index d7ddb1ec86a0..6fb9ec54cf9b 100644
--- a/arch/sh/include/asm/pgtable.h
+++ b/arch/sh/include/asm/pgtable.h
@@ -89,23 +89,6 @@ static inline unsigned long phys_addr_mask(void)
* completely separate permission bits for user and kernel space.
*/
/*xwr*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_EXECREAD
-#define __P101 PAGE_EXECREAD
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_WRITEONLY
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_EXECREAD
-#define __S101 PAGE_EXECREAD
-#define __S110 PAGE_RWX
-#define __S111 PAGE_RWX
typedef pte_t *pte_addr_t;
diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c
index 6a1a1297baae..b82199878b45 100644
--- a/arch/sh/mm/mmap.c
+++ b/arch/sh/mm/mmap.c
@@ -19,6 +19,26 @@ unsigned long shm_align_mask = PAGE_SIZE - 1;/* Sane
caches */
EXPORT_SYMBOL(shm_align_mask);
#ifdef CONFIG_MMU
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_EXECREAD,
+ [VM_EXEC | VM_READ] = PAGE_EXECREAD,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_WRITEONLY,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_EXECREAD,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_EXECREAD,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_RWX,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_RWX
+};
+DECLARE_VM_GET_PAGE_PROT
+
/*
* To avoid cache aliases, we map the shared page with same color.
*/
--
2.25.1
___
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[PATCH V7 24/26] um/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Jeff Dike
Cc: linux...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/um/Kconfig | 1 +
arch/um/include/asm/pgtable.h | 17 -
arch/um/kernel/mem.c | 20
arch/x86/um/mem_32.c | 2 +-
4 files changed, 22 insertions(+), 18 deletions(-)
diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index 4ec22e156a2e..7fb43654e5b5 100644
--- a/arch/um/Kconfig
+++ b/arch/um/Kconfig
@@ -10,6 +10,7 @@ config UML
select ARCH_HAS_KCOV
select ARCH_HAS_STRNCPY_FROM_USER
select ARCH_HAS_STRNLEN_USER
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_NO_PREEMPT
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_SECCOMP_FILTER
diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h
index 167e236d9bb8..66bc3f99d9be 100644
--- a/arch/um/include/asm/pgtable.h
+++ b/arch/um/include/asm/pgtable.h
@@ -68,23 +68,6 @@ extern unsigned long end_iomem;
* Also, write permissions imply read permissions. This is the closest we can
* get..
*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED
/*
* ZERO_PAGE is a global shared page that is always zero: used
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index 15295c3237a0..5b259f0a1f94 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -197,3 +197,23 @@ void *uml_kmalloc(int size, int flags)
{
return kmalloc(size, flags);
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_READONLY,
+ [VM_EXEC | VM_READ] = PAGE_READONLY,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED
+};
+DECLARE_VM_GET_PAGE_PROT
diff --git a/arch/x86/um/mem_32.c b/arch/x86/um/mem_32.c
index 19c5dbd46770..cafd01f730da 100644
--- a/arch/x86/um/mem_32.c
+++ b/arch/x86/um/mem_32.c
@@ -17,7 +17,7 @@ static int __init gate_vma_init(void)
gate_vma.vm_start = FIXADDR_USER_START;
gate_vma.vm_end = FIXADDR_USER_END;
gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
- gate_vma.vm_page_prot = __P101;
+ gate_vma.vm_page_prot = PAGE_READONLY;
return 0;
}
--
2.25.1
___
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[PATCH V7 23/26] arm/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Russell King
Cc: Arnd Bergmann
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/arm/Kconfig | 1 +
arch/arm/include/asm/pgtable.h | 17 -
arch/arm/lib/uaccess_with_memcpy.c | 2 +-
arch/arm/mm/mmu.c | 20
4 files changed, 22 insertions(+), 18 deletions(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7630ba9cb6cc..e153b6d4fc5b 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -24,6 +24,7 @@ config ARM
select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB || !MMU
select ARCH_HAS_TEARDOWN_DMA_OPS if MMU
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAVE_CUSTOM_GPIO_H
select ARCH_HAVE_NMI_SAFE_CMPXCHG if CPU_V7 || CPU_V7M || CPU_V6K
select ARCH_HAS_GCOV_PROFILE_ALL
diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
index cd1f84bb40ae..78a532068fec 100644
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@ -137,23 +137,6 @@ extern pgprot_t phys_mem_access_prot(struct file *file,
unsigned long pfn,
* 2) If we could do execute protection, then read is implied
* 3) write implies read permissions
*/
-#define __P000 __PAGE_NONE
-#define __P001 __PAGE_READONLY
-#define __P010 __PAGE_COPY
-#define __P011 __PAGE_COPY
-#define __P100 __PAGE_READONLY_EXEC
-#define __P101 __PAGE_READONLY_EXEC
-#define __P110 __PAGE_COPY_EXEC
-#define __P111 __PAGE_COPY_EXEC
-
-#define __S000 __PAGE_NONE
-#define __S001 __PAGE_READONLY
-#define __S010 __PAGE_SHARED
-#define __S011 __PAGE_SHARED
-#define __S100 __PAGE_READONLY_EXEC
-#define __S101 __PAGE_READONLY_EXEC
-#define __S110 __PAGE_SHARED_EXEC
-#define __S111 __PAGE_SHARED_EXEC
#ifndef __ASSEMBLY__
/*
diff --git a/arch/arm/lib/uaccess_with_memcpy.c
b/arch/arm/lib/uaccess_with_memcpy.c
index c30b689bec2e..14eecaaf295f 100644
--- a/arch/arm/lib/uaccess_with_memcpy.c
+++ b/arch/arm/lib/uaccess_with_memcpy.c
@@ -237,7 +237,7 @@ static int __init test_size_treshold(void)
if (!dst_page)
goto no_dst;
kernel_ptr = page_address(src_page);
- user_ptr = vmap(&dst_page, 1, VM_IOREMAP, __pgprot(__P010));
+ user_ptr = vmap(&dst_page, 1, VM_IOREMAP, __pgprot(__PAGE_COPY));
if (!user_ptr)
goto no_vmap;
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 5e2be37a198e..2722abddd725 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -405,6 +405,26 @@ void __set_fixmap(enum fixed_addresses idx, phys_addr_t
phys, pgprot_t prot)
local_flush_tlb_kernel_range(vaddr, vaddr + PAGE_SIZE);
}
+static pgprot_t protection_map[16] __ro_after_init = {
+ [VM_NONE] = __PAGE_NONE,
+ [VM_READ] = __PAGE_READONLY,
+ [VM_WRITE] = __PAGE_COPY,
+ [VM_WRITE | VM_READ]= __PAGE_COPY,
+ [VM_EXEC] = __PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_READ] = __PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_WRITE]= __PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = __PAGE_COPY_EXEC,
+ [VM_SHARED] = __PAGE_NONE,
+ [VM_SHARED | VM_READ] = __PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = __PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= __PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = __PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_READ] = __PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= __PAGE_SHARED_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = __PAGE_SHARED_EXEC
+};
+DECLARE_VM_GET_PAGE_PROT
+
/*
* Adjust the PMD section entries according to the CPU in use.
*/
--
2.25.1
___
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[PATCH V7 22/26] arc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Vineet Gupta
Cc: linux-snps-arc@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/arc/Kconfig | 1 +
arch/arc/include/asm/pgtable-bits-arcv2.h | 18 --
arch/arc/mm/mmap.c| 20
3 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 9e3653253ef2..8be56a5d8a9b 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -13,6 +13,7 @@ config ARC
select ARCH_HAS_SETUP_DMA_OPS
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC
select ARCH_32BIT_OFF_T
select BUILDTIME_TABLE_SORT
diff --git a/arch/arc/include/asm/pgtable-bits-arcv2.h
b/arch/arc/include/asm/pgtable-bits-arcv2.h
index 183d23bc1e00..b23be557403e 100644
--- a/arch/arc/include/asm/pgtable-bits-arcv2.h
+++ b/arch/arc/include/asm/pgtable-bits-arcv2.h
@@ -72,24 +72,6 @@
* This is to enable COW mechanism
*/
/* xwr */
-#define __P000 PAGE_U_NONE
-#define __P001 PAGE_U_R
-#define __P010 PAGE_U_R /* Pvt-W => !W */
-#define __P011 PAGE_U_R /* Pvt-W => !W */
-#define __P100 PAGE_U_X_R /* X => R */
-#define __P101 PAGE_U_X_R
-#define __P110 PAGE_U_X_R /* Pvt-W => !W and X => R */
-#define __P111 PAGE_U_X_R /* Pvt-W => !W */
-
-#define __S000 PAGE_U_NONE
-#define __S001 PAGE_U_R
-#define __S010 PAGE_U_W_R /* W => R */
-#define __S011 PAGE_U_W_R
-#define __S100 PAGE_U_X_R /* X => R */
-#define __S101 PAGE_U_X_R
-#define __S110 PAGE_U_X_W_R /* X => R */
-#define __S111 PAGE_U_X_W_R
-
#ifndef __ASSEMBLY__
#define pte_write(pte) (pte_val(pte) & _PAGE_WRITE)
diff --git a/arch/arc/mm/mmap.c b/arch/arc/mm/mmap.c
index 722d26b94307..fce5fa2b4f52 100644
--- a/arch/arc/mm/mmap.c
+++ b/arch/arc/mm/mmap.c
@@ -74,3 +74,23 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
info.align_offset = pgoff << PAGE_SHIFT;
return vm_unmapped_area(&info);
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_U_NONE,
+ [VM_READ] = PAGE_U_R,
+ [VM_WRITE] = PAGE_U_R,
+ [VM_WRITE | VM_READ]= PAGE_U_R,
+ [VM_EXEC] = PAGE_U_X_R,
+ [VM_EXEC | VM_READ] = PAGE_U_X_R,
+ [VM_EXEC | VM_WRITE]= PAGE_U_X_R,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_U_X_R,
+ [VM_SHARED] = PAGE_U_NONE,
+ [VM_SHARED | VM_READ] = PAGE_U_R,
+ [VM_SHARED | VM_WRITE] = PAGE_U_W_R,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_U_W_R,
+ [VM_SHARED | VM_EXEC] = PAGE_U_X_R,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_U_X_R,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_U_X_W_R,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_U_X_W_R
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
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[PATCH V7 21/26] m68k/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Cc: Thomas Bogendoerfer Cc: linux-m...@lists.linux-m68k.org Cc: linux-ker...@vger.kernel.org Reviewed-by: Geert Uytterhoeven Acked-by: Geert Uytterhoeven Signed-off-by: Anshuman Khandual --- arch/m68k/Kconfig| 1 + arch/m68k/include/asm/mcf_pgtable.h | 59 arch/m68k/include/asm/motorola_pgtable.h | 29 arch/m68k/include/asm/sun3_pgtable.h | 23 - arch/m68k/mm/mcfmmu.c| 55 ++ arch/m68k/mm/motorola.c | 29 arch/m68k/mm/sun3mmu.c | 20 7 files changed, 105 insertions(+), 111 deletions(-) diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 936cce42ae9a..49aa0cf13e96 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -7,6 +7,7 @@ config M68K select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA + select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS select ARCH_MIGHT_HAVE_PC_PARPORT if ISA select ARCH_NO_PREEMPT if !COLDFIRE diff --git a/arch/m68k/include/asm/mcf_pgtable.h b/arch/m68k/include/asm/mcf_pgtable.h index 94f38d76e278..b619b22823f8 100644 --- a/arch/m68k/include/asm/mcf_pgtable.h +++ b/arch/m68k/include/asm/mcf_pgtable.h @@ -86,65 +86,6 @@ | CF_PAGE_READABLE \ | CF_PAGE_DIRTY) -/* - * Page protections for initialising protection_map. See mm/mmap.c - * for use. In general, the bit positions are xwr, and P-items are - * private, the S-items are shared. - */ -#define __P000 PAGE_NONE -#define __P001 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE) -#define __P010 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_WRITABLE) -#define __P011 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE \ -| CF_PAGE_WRITABLE) -#define __P100 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_EXEC) -#define __P101 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE \ -| CF_PAGE_EXEC) -#define __P110 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_WRITABLE \ -| CF_PAGE_EXEC) -#define __P111 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE \ -| CF_PAGE_WRITABLE \ -| CF_PAGE_EXEC) - -#define __S000 PAGE_NONE -#define __S001 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE) -#define __S010 PAGE_SHARED -#define __S011 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_SHARED \ -| CF_PAGE_READABLE) -#define __S100 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_EXEC) -#define __S101 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE \ -| CF_PAGE_EXEC) -#define __S110 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_SHARED \ -| CF_PAGE_EXEC) -#define __S111 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_SHARED \ -| CF_PAGE_READABLE \ -| CF_PAGE_EXEC) - #define PTE_MASK PAGE_MASK #define CF_PAGE_CHG_MASK (PTE_MASK | CF_PAGE_ACCESSED | CF_PAGE_DIRTY) diff --git a/arch/m68k/include/asm/motorola_pgtable.h b/arch/m68k/include/asm/motorola_pgtable.h index 7c9b56e2a750..7ac3d64c6b33 100644 --- a/arch/m68k/include/asm/motorola_pgtable.h +++ b/arch/m68k/include/asm/motorola_pgt
[PATCH V7 20/26] mips/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Thomas Bogendoerfer
Cc: linux-m...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/mips/Kconfig | 1 +
arch/mips/include/asm/pgtable.h | 22 --
arch/mips/mm/cache.c| 3 +++
3 files changed, 4 insertions(+), 22 deletions(-)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index db09d45d59ec..d0b7eb11ec81 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -14,6 +14,7 @@ config MIPS
select ARCH_HAS_STRNLEN_USER
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAS_UBSAN_SANITIZE_ALL
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_KEEP_MEMBLOCK
select ARCH_SUPPORTS_UPROBES
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
index 374c6322775d..6caec386ad2f 100644
--- a/arch/mips/include/asm/pgtable.h
+++ b/arch/mips/include/asm/pgtable.h
@@ -41,28 +41,6 @@ struct vm_area_struct;
* by reasonable means..
*/
-/*
- * Dummy values to fill the table in mmap.c
- * The real values will be generated at runtime
- */
-#define __P000 __pgprot(0)
-#define __P001 __pgprot(0)
-#define __P010 __pgprot(0)
-#define __P011 __pgprot(0)
-#define __P100 __pgprot(0)
-#define __P101 __pgprot(0)
-#define __P110 __pgprot(0)
-#define __P111 __pgprot(0)
-
-#define __S000 __pgprot(0)
-#define __S001 __pgprot(0)
-#define __S010 __pgprot(0)
-#define __S011 __pgprot(0)
-#define __S100 __pgprot(0)
-#define __S101 __pgprot(0)
-#define __S110 __pgprot(0)
-#define __S111 __pgprot(0)
-
extern unsigned long _page_cachable_default;
extern void __update_cache(unsigned long address, pte_t pte);
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
index 7be7240f7703..11b3e7ddafd5 100644
--- a/arch/mips/mm/cache.c
+++ b/arch/mips/mm/cache.c
@@ -159,6 +159,9 @@ EXPORT_SYMBOL(_page_cachable_default);
#define PM(p) __pgprot(_page_cachable_default | (p))
+static pgprot_t protection_map[16] __ro_after_init;
+DECLARE_VM_GET_PAGE_PROT
+
static inline void setup_protection_map(void)
{
protection_map[0] = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_NO_READ);
--
2.25.1
___
linux-snps-arc mailing list
linux-snps-arc@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V7 19/26] ia64/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: linux-i...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/ia64/Kconfig | 1 +
arch/ia64/include/asm/pgtable.h | 18 --
arch/ia64/mm/init.c | 28 +++-
3 files changed, 28 insertions(+), 19 deletions(-)
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index cb93769a9f2a..0510a5737711 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -12,6 +12,7 @@ config IA64
select ARCH_HAS_DMA_MARK_CLEAN
select ARCH_HAS_STRNCPY_FROM_USER
select ARCH_HAS_STRNLEN_USER
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
select ACPI
diff --git a/arch/ia64/include/asm/pgtable.h b/arch/ia64/include/asm/pgtable.h
index 7aa8f2330fb1..6925e28ae61d 100644
--- a/arch/ia64/include/asm/pgtable.h
+++ b/arch/ia64/include/asm/pgtable.h
@@ -161,24 +161,6 @@
* attempts to write to the page.
*/
/* xwr */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_READONLY /* write to priv pg -> copy & make writable */
-#define __P011 PAGE_READONLY /* ditto */
-#define __P100 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_X_RX)
-#define __P101 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RX)
-#define __P110 PAGE_COPY_EXEC
-#define __P111 PAGE_COPY_EXEC
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED /* we don't have (and don't need) write-only */
-#define __S011 PAGE_SHARED
-#define __S100 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_X_RX)
-#define __S101 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RX)
-#define __S110 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RWX)
-#define __S111 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RWX)
-
#define pgd_ERROR(e) printk("%s:%d: bad pgd %016lx.\n", __FILE__, __LINE__,
pgd_val(e))
#if CONFIG_PGTABLE_LEVELS == 4
#define pud_ERROR(e) printk("%s:%d: bad pud %016lx.\n", __FILE__, __LINE__,
pud_val(e))
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 855d949d81df..fc4e4217e87f 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -273,7 +273,7 @@ static int __init gate_vma_init(void)
gate_vma.vm_start = FIXADDR_USER_START;
gate_vma.vm_end = FIXADDR_USER_END;
gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
- gate_vma.vm_page_prot = __P101;
+ gate_vma.vm_page_prot = __pgprot(__ACCESS_BITS | _PAGE_PL_3 |
_PAGE_AR_RX);
return 0;
}
@@ -490,3 +490,29 @@ void arch_remove_memory(u64 start, u64 size, struct
vmem_altmap *altmap)
__remove_pages(start_pfn, nr_pages, altmap);
}
#endif
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_READONLY,
+ [VM_WRITE | VM_READ]= PAGE_READONLY,
+ [VM_EXEC] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+
_PAGE_AR_X_RX),
+ [VM_EXEC | VM_READ] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+ _PAGE_AR_RX),
+ [VM_EXEC | VM_WRITE]= PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_EXEC,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+
_PAGE_AR_X_RX),
+ [VM_SHARED | VM_EXEC | VM_READ] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+ _PAGE_AR_RX),
+ [VM_SHARED | VM_EXEC | VM_WRITE]=
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+
_PAGE_AR_RWX),
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+ _PAGE_AR_RWX)
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux
[PATCH V7 18/26] s390/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Heiko Carstens
Cc: Vasily Gorbik
Cc: linux-s...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/s390/Kconfig | 1 +
arch/s390/include/asm/pgtable.h | 17 -
arch/s390/mm/mmap.c | 20
3 files changed, 21 insertions(+), 17 deletions(-)
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 8cd9e56c629b..abc8be547354 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -81,6 +81,7 @@ config S390
select ARCH_HAS_SYSCALL_WRAPPER
select ARCH_HAS_UBSAN_SANITIZE_ALL
select ARCH_HAS_VDSO_DATA
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_INLINE_READ_LOCK
select ARCH_INLINE_READ_LOCK_BH
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index a397b072a580..c63a05b5368a 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -424,23 +424,6 @@ static inline int is_module_addr(void *addr)
* implies read permission.
*/
/*xwr*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_RO
-#define __P010 PAGE_RO
-#define __P011 PAGE_RO
-#define __P100 PAGE_RX
-#define __P101 PAGE_RX
-#define __P110 PAGE_RX
-#define __P111 PAGE_RX
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_RO
-#define __S010 PAGE_RW
-#define __S011 PAGE_RW
-#define __S100 PAGE_RX
-#define __S101 PAGE_RX
-#define __S110 PAGE_RWX
-#define __S111 PAGE_RWX
/*
* Segment entry (large page) protection definitions.
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index d545f5c39f7e..5980ce348832 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -188,3 +188,23 @@ void arch_pick_mmap_layout(struct mm_struct *mm, struct
rlimit *rlim_stack)
mm->get_unmapped_area = arch_get_unmapped_area_topdown;
}
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_RO,
+ [VM_WRITE] = PAGE_RO,
+ [VM_WRITE | VM_READ]= PAGE_RO,
+ [VM_EXEC] = PAGE_RX,
+ [VM_EXEC | VM_READ] = PAGE_RX,
+ [VM_EXEC | VM_WRITE]= PAGE_RX,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_RX,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_RO,
+ [VM_SHARED | VM_WRITE] = PAGE_RW,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_RW,
+ [VM_SHARED | VM_EXEC] = PAGE_RX,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_RX,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_RWX,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_RWX
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
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[PATCH V7 17/26] csky/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Geert Uytterhoeven
Cc: linux-c...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Acked-by: Guo Ren
Signed-off-by: Anshuman Khandual
---
arch/csky/Kconfig | 1 +
arch/csky/include/asm/pgtable.h | 18 --
arch/csky/mm/init.c | 20
3 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig
index 21d72b078eef..588b8a9c68ed 100644
--- a/arch/csky/Kconfig
+++ b/arch/csky/Kconfig
@@ -6,6 +6,7 @@ config CSKY
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_QUEUED_RWLOCKS
select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 &&
$(cc-option,-mbacktrace)
diff --git a/arch/csky/include/asm/pgtable.h b/arch/csky/include/asm/pgtable.h
index bbe24511..229a5f4ad7fc 100644
--- a/arch/csky/include/asm/pgtable.h
+++ b/arch/csky/include/asm/pgtable.h
@@ -77,24 +77,6 @@
#define MAX_SWAPFILES_CHECK() \
BUILD_BUG_ON(MAX_SWAPFILES_SHIFT != 5)
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READ
-#define __P010 PAGE_READ
-#define __P011 PAGE_READ
-#define __P100 PAGE_READ
-#define __P101 PAGE_READ
-#define __P110 PAGE_READ
-#define __P111 PAGE_READ
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READ
-#define __S010 PAGE_WRITE
-#define __S011 PAGE_WRITE
-#define __S100 PAGE_READ
-#define __S101 PAGE_READ
-#define __S110 PAGE_WRITE
-#define __S111 PAGE_WRITE
-
extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)];
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
diff --git a/arch/csky/mm/init.c b/arch/csky/mm/init.c
index bf2004aa811a..bde7cabd23df 100644
--- a/arch/csky/mm/init.c
+++ b/arch/csky/mm/init.c
@@ -197,3 +197,23 @@ void __init fixaddr_init(void)
vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
fixrange_init(vaddr, vaddr + PMD_SIZE, swapper_pg_dir);
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READ,
+ [VM_WRITE] = PAGE_READ,
+ [VM_WRITE | VM_READ]= PAGE_READ,
+ [VM_EXEC] = PAGE_READ,
+ [VM_EXEC | VM_READ] = PAGE_READ,
+ [VM_EXEC | VM_WRITE]= PAGE_READ,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_READ,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READ,
+ [VM_SHARED | VM_WRITE] = PAGE_WRITE,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_WRITE,
+ [VM_SHARED | VM_EXEC] = PAGE_READ,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READ,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_WRITE,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_WRITE
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
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[PATCH V7 16/26] riscv/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Paul Walmsley
Cc: Palmer Dabbelt
Cc: linux-ri...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/riscv/Kconfig | 1 +
arch/riscv/include/asm/pgtable.h | 20
arch/riscv/mm/init.c | 20
3 files changed, 21 insertions(+), 20 deletions(-)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 32ffef9f6e5b..583389d4e43a 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -32,6 +32,7 @@ config RISCV
select ARCH_HAS_STRICT_MODULE_RWX if MMU && !XIP_KERNEL
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAS_UBSAN_SANITIZE_ALL
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT
select ARCH_STACKWALK
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 1d1be9d9419c..23e643db6575 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -186,26 +186,6 @@ extern struct pt_alloc_ops pt_ops __initdata;
extern pgd_t swapper_pg_dir[];
-/* MAP_PRIVATE permissions: xwr (copy-on-write) */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READ
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_EXEC
-#define __P101 PAGE_READ_EXEC
-#define __P110 PAGE_COPY_EXEC
-#define __P111 PAGE_COPY_READ_EXEC
-
-/* MAP_SHARED permissions: xwr */
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READ
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_EXEC
-#define __S101 PAGE_READ_EXEC
-#define __S110 PAGE_SHARED_EXEC
-#define __S111 PAGE_SHARED_EXEC
-
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
static inline int pmd_present(pmd_t pmd)
{
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index d466ec670e1f..a88b7dc31a68 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -288,6 +288,26 @@ static pmd_t __maybe_unused early_dtb_pmd[PTRS_PER_PMD]
__initdata __aligned(PAG
#define early_pg_dir ((pgd_t *)XIP_FIXUP(early_pg_dir))
#endif /* CONFIG_XIP_KERNEL */
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READ,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_EXEC,
+ [VM_EXEC | VM_READ] = PAGE_READ_EXEC,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_READ_EXEC,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READ,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_EXEC,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READ_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_EXEC
+};
+DECLARE_VM_GET_PAGE_PROT
+
void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot)
{
unsigned long addr = __fix_to_virt(idx);
--
2.25.1
___
linux-snps-arc mailing list
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[PATCH V7 15/26] nios2/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Dinh Nguyen
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/nios2/Kconfig | 1 +
arch/nios2/include/asm/pgtable.h | 16
arch/nios2/mm/init.c | 20
3 files changed, 21 insertions(+), 16 deletions(-)
diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index 4167f1eb4cd8..e0459dffd218 100644
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -6,6 +6,7 @@ config NIOS2
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
select ARCH_HAS_DMA_SET_UNCACHED
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_NO_SWAP
select COMMON_CLK
select TIMER_OF
diff --git a/arch/nios2/include/asm/pgtable.h b/arch/nios2/include/asm/pgtable.h
index 262d0609268c..470516d4555e 100644
--- a/arch/nios2/include/asm/pgtable.h
+++ b/arch/nios2/include/asm/pgtable.h
@@ -40,24 +40,8 @@ struct mm_struct;
*/
/* Remove W bit on private pages for COW support */
-#define __P000 MKP(0, 0, 0)
-#define __P001 MKP(0, 0, 1)
-#define __P010 MKP(0, 0, 0)/* COW */
-#define __P011 MKP(0, 0, 1)/* COW */
-#define __P100 MKP(1, 0, 0)
-#define __P101 MKP(1, 0, 1)
-#define __P110 MKP(1, 0, 0)/* COW */
-#define __P111 MKP(1, 0, 1)/* COW */
/* Shared pages can have exact HW mapping */
-#define __S000 MKP(0, 0, 0)
-#define __S001 MKP(0, 0, 1)
-#define __S010 MKP(0, 1, 0)
-#define __S011 MKP(0, 1, 1)
-#define __S100 MKP(1, 0, 0)
-#define __S101 MKP(1, 0, 1)
-#define __S110 MKP(1, 1, 0)
-#define __S111 MKP(1, 1, 1)
/* Used all over the kernel */
#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | _PAGE_CACHED | _PAGE_READ | \
diff --git a/arch/nios2/mm/init.c b/arch/nios2/mm/init.c
index 613fcaa5988a..ae24687d12ad 100644
--- a/arch/nios2/mm/init.c
+++ b/arch/nios2/mm/init.c
@@ -124,3 +124,23 @@ const char *arch_vma_name(struct vm_area_struct *vma)
{
return (vma->vm_start == KUSER_BASE) ? "[kuser]" : NULL;
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = MKP(0, 0, 0),
+ [VM_READ] = MKP(0, 0, 1),
+ [VM_WRITE] = MKP(0, 0, 0),
+ [VM_WRITE | VM_READ]= MKP(0, 0, 1),
+ [VM_EXEC] = MKP(1, 0, 0),
+ [VM_EXEC | VM_READ] = MKP(1, 0, 1),
+ [VM_EXEC | VM_WRITE]= MKP(1, 0, 0),
+ [VM_EXEC | VM_WRITE | VM_READ] = MKP(1, 0, 1),
+ [VM_SHARED] = MKP(0, 0, 0),
+ [VM_SHARED | VM_READ] = MKP(0, 0, 1),
+ [VM_SHARED | VM_WRITE] = MKP(0, 1, 0),
+ [VM_SHARED | VM_WRITE | VM_READ]= MKP(0, 1, 1),
+ [VM_SHARED | VM_EXEC] = MKP(1, 0, 0),
+ [VM_SHARED | VM_EXEC | VM_READ] = MKP(1, 0, 1),
+ [VM_SHARED | VM_EXEC | VM_WRITE]= MKP(1, 1, 0),
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = MKP(1, 1, 1)
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V7 14/26] alpha/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Richard Henderson
Cc: linux-al...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/alpha/Kconfig | 1 +
arch/alpha/include/asm/pgtable.h | 17 -
arch/alpha/mm/init.c | 22 ++
3 files changed, 23 insertions(+), 17 deletions(-)
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 7d0d26b5b3f5..db1c8b329461 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -2,6 +2,7 @@
config ALPHA
bool
default y
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_32BIT_USTAT_F_TINODE
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
diff --git a/arch/alpha/include/asm/pgtable.h b/arch/alpha/include/asm/pgtable.h
index 170451fde043..3ea9661c09ff 100644
--- a/arch/alpha/include/asm/pgtable.h
+++ b/arch/alpha/include/asm/pgtable.h
@@ -116,23 +116,6 @@ struct vm_area_struct;
* arch/alpha/mm/fault.c)
*/
/* xwr */
-#define __P000 _PAGE_P(_PAGE_FOE | _PAGE_FOW | _PAGE_FOR)
-#define __P001 _PAGE_P(_PAGE_FOE | _PAGE_FOW)
-#define __P010 _PAGE_P(_PAGE_FOE)
-#define __P011 _PAGE_P(_PAGE_FOE)
-#define __P100 _PAGE_P(_PAGE_FOW | _PAGE_FOR)
-#define __P101 _PAGE_P(_PAGE_FOW)
-#define __P110 _PAGE_P(0)
-#define __P111 _PAGE_P(0)
-
-#define __S000 _PAGE_S(_PAGE_FOE | _PAGE_FOW | _PAGE_FOR)
-#define __S001 _PAGE_S(_PAGE_FOE | _PAGE_FOW)
-#define __S010 _PAGE_S(_PAGE_FOE)
-#define __S011 _PAGE_S(_PAGE_FOE)
-#define __S100 _PAGE_S(_PAGE_FOW | _PAGE_FOR)
-#define __S101 _PAGE_S(_PAGE_FOW)
-#define __S110 _PAGE_S(0)
-#define __S111 _PAGE_S(0)
/*
* pgprot_noncached() is only for infiniband pci support, and a real
diff --git a/arch/alpha/mm/init.c b/arch/alpha/mm/init.c
index 7511723b7669..a155180d7a83 100644
--- a/arch/alpha/mm/init.c
+++ b/arch/alpha/mm/init.c
@@ -280,3 +280,25 @@ mem_init(void)
high_memory = (void *) __va(max_low_pfn * PAGE_SIZE);
memblock_free_all();
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = _PAGE_P(_PAGE_FOE |
_PAGE_FOW |
+ _PAGE_FOR),
+ [VM_READ] = _PAGE_P(_PAGE_FOE |
_PAGE_FOW),
+ [VM_WRITE] = _PAGE_P(_PAGE_FOE),
+ [VM_WRITE | VM_READ]= _PAGE_P(_PAGE_FOE),
+ [VM_EXEC] = _PAGE_P(_PAGE_FOW |
_PAGE_FOR),
+ [VM_EXEC | VM_READ] = _PAGE_P(_PAGE_FOW),
+ [VM_EXEC | VM_WRITE]= _PAGE_P(0),
+ [VM_EXEC | VM_WRITE | VM_READ] = _PAGE_P(0),
+ [VM_SHARED] = _PAGE_S(_PAGE_FOE |
_PAGE_FOW |
+ _PAGE_FOR),
+ [VM_SHARED | VM_READ] = _PAGE_S(_PAGE_FOE |
_PAGE_FOW),
+ [VM_SHARED | VM_WRITE] = _PAGE_S(_PAGE_FOE),
+ [VM_SHARED | VM_WRITE | VM_READ]= _PAGE_S(_PAGE_FOE),
+ [VM_SHARED | VM_EXEC] = _PAGE_S(_PAGE_FOW |
_PAGE_FOR),
+ [VM_SHARED | VM_EXEC | VM_READ] = _PAGE_S(_PAGE_FOW),
+ [VM_SHARED | VM_EXEC | VM_WRITE]= _PAGE_S(0),
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = _PAGE_S(0)
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V7 13/26] parisc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: "James E.J. Bottomley"
Cc: linux-par...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/parisc/Kconfig | 1 +
arch/parisc/include/asm/pgtable.h | 18 --
arch/parisc/mm/init.c | 20
3 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index fa400055b2d5..891d82393957 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -12,6 +12,7 @@ config PARISC
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_STRICT_MODULE_RWX
select ARCH_HAS_UBSAN_SANITIZE_ALL
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAS_PTE_SPECIAL
select ARCH_NO_SG_CHAIN
select ARCH_SUPPORTS_HUGETLBFS if PA20
diff --git a/arch/parisc/include/asm/pgtable.h
b/arch/parisc/include/asm/pgtable.h
index 69765a6dbe89..6a1899a9b420 100644
--- a/arch/parisc/include/asm/pgtable.h
+++ b/arch/parisc/include/asm/pgtable.h
@@ -271,24 +271,6 @@ extern void __update_cache(pte_t pte);
*/
/*xwr*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 __P000 /* copy on write */
-#define __P011 __P001 /* copy on write */
-#define __P100 PAGE_EXECREAD
-#define __P101 PAGE_EXECREAD
-#define __P110 __P100 /* copy on write */
-#define __P111 __P101 /* copy on write */
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_WRITEONLY
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_EXECREAD
-#define __S101 PAGE_EXECREAD
-#define __S110 PAGE_RWX
-#define __S111 PAGE_RWX
-
extern pgd_t swapper_pg_dir[]; /* declared in init_task.c */
diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index 0a81499dd35e..f03e0961fa25 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -871,3 +871,23 @@ void flush_tlb_all(void)
spin_unlock(&sid_lock);
}
#endif
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_NONE,
+ [VM_WRITE | VM_READ]= PAGE_READONLY,
+ [VM_EXEC] = PAGE_EXECREAD,
+ [VM_EXEC | VM_READ] = PAGE_EXECREAD,
+ [VM_EXEC | VM_WRITE]= PAGE_EXECREAD,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_EXECREAD,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_WRITEONLY,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_EXECREAD,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_EXECREAD,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_RWX,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_RWX
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
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[PATCH V7 12/26] hexagon/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Brian Cain
Cc: linux-hexa...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Acked-by: Brian Cain
Signed-off-by: Anshuman Khandual
---
arch/hexagon/Kconfig | 1 +
arch/hexagon/include/asm/pgtable.h | 27 ---
arch/hexagon/mm/init.c | 42 ++
3 files changed, 43 insertions(+), 27 deletions(-)
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index 54eadf265178..bc4ceecd0588 100644
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -6,6 +6,7 @@ config HEXAGON
def_bool y
select ARCH_32BIT_OFF_T
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_NO_PREEMPT
select DMA_GLOBAL_POOL
# Other pending projects/to-do items.
diff --git a/arch/hexagon/include/asm/pgtable.h
b/arch/hexagon/include/asm/pgtable.h
index 0610724d6a28..f7048c18b6f9 100644
--- a/arch/hexagon/include/asm/pgtable.h
+++ b/arch/hexagon/include/asm/pgtable.h
@@ -126,33 +126,6 @@ extern unsigned long _dflt_cache_att;
*/
#define CACHEDEF (CACHE_DEFAULT << 6)
-/* Private (copy-on-write) page protections. */
-#define __P000 __pgprot(_PAGE_PRESENT | _PAGE_USER | CACHEDEF)
-#define __P001 __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | CACHEDEF)
-#define __P010 __P000 /* Write-only copy-on-write */
-#define __P011 __P001 /* Read/Write copy-on-write */
-#define __P100 __pgprot(_PAGE_PRESENT | _PAGE_USER | \
- _PAGE_EXECUTE | CACHEDEF)
-#define __P101 __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_EXECUTE | \
- _PAGE_READ | CACHEDEF)
-#define __P110 __P100 /* Write/execute copy-on-write */
-#define __P111 __P101 /* Read/Write/Execute, copy-on-write */
-
-/* Shared page protections. */
-#define __S000 __P000
-#define __S001 __P001
-#define __S010 __pgprot(_PAGE_PRESENT | _PAGE_USER | \
- _PAGE_WRITE | CACHEDEF)
-#define __S011 __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | \
- _PAGE_WRITE | CACHEDEF)
-#define __S100 __pgprot(_PAGE_PRESENT | _PAGE_USER | \
- _PAGE_EXECUTE | CACHEDEF)
-#define __S101 __P101
-#define __S110 __pgprot(_PAGE_PRESENT | _PAGE_USER | \
- _PAGE_EXECUTE | _PAGE_WRITE | CACHEDEF)
-#define __S111 __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | \
- _PAGE_EXECUTE | _PAGE_WRITE | CACHEDEF)
-
extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; /* located in head.S */
/* HUGETLB not working currently */
diff --git a/arch/hexagon/mm/init.c b/arch/hexagon/mm/init.c
index 3167a3b5c97b..146115c9de61 100644
--- a/arch/hexagon/mm/init.c
+++ b/arch/hexagon/mm/init.c
@@ -234,3 +234,45 @@ void __init setup_arch_memory(void)
* which is called by start_kernel() later on in the process
*/
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+ CACHEDEF),
+ [VM_READ] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+ _PAGE_READ |
CACHEDEF),
+ [VM_WRITE] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+ CACHEDEF),
+ [VM_WRITE | VM_READ]=
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+ _PAGE_READ |
CACHEDEF),
+ [VM_EXEC] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+
_PAGE_EXECUTE | CACHEDEF),
+ [VM_EXEC | VM_READ] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+
_PAGE_EXECUTE | _PAGE_READ |
+ CACHEDEF),
+ [VM_EXEC | VM_WRITE]=
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+
_PAGE_EXECUTE | CACHEDEF),
+ [VM_EXEC | VM_WRITE | VM_READ] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+
_PAGE_EXECUTE | _PAGE_READ |
+ CACHEDEF),
+ [VM_SHARED] =
__pgprot(_PAGE_PRESENT | _PAG
[PATCH V7 11/26] xtensa/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Chris Zankel
Cc: Guo Ren
Cc: linux-xte...@linux-xtensa.org
Cc: linux-c...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/xtensa/Kconfig | 1 +
arch/xtensa/include/asm/pgtable.h | 18 --
arch/xtensa/mm/init.c | 22 ++
3 files changed, 23 insertions(+), 18 deletions(-)
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 0b0f0172cced..4c0d83520ff1 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -11,6 +11,7 @@ config XTENSA
select ARCH_HAS_DMA_SET_UNCACHED if MMU
select ARCH_HAS_STRNCPY_FROM_USER if !KASAN
select ARCH_HAS_STRNLEN_USER
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_USE_MEMTEST
select ARCH_USE_QUEUED_RWLOCKS
select ARCH_USE_QUEUED_SPINLOCKS
diff --git a/arch/xtensa/include/asm/pgtable.h
b/arch/xtensa/include/asm/pgtable.h
index 0a91376131c5..e0d5531ae00d 100644
--- a/arch/xtensa/include/asm/pgtable.h
+++ b/arch/xtensa/include/asm/pgtable.h
@@ -200,24 +200,6 @@
* What follows is the closest we can get by reasonable means..
* See linux/mm/mmap.c for protection_map[] array that uses these definitions.
*/
-#define __P000 PAGE_NONE /* private --- */
-#define __P001 PAGE_READONLY /* private --r */
-#define __P010 PAGE_COPY /* private -w- */
-#define __P011 PAGE_COPY /* private -wr */
-#define __P100 PAGE_READONLY_EXEC /* private x-- */
-#define __P101 PAGE_READONLY_EXEC /* private x-r */
-#define __P110 PAGE_COPY_EXEC /* private xw- */
-#define __P111 PAGE_COPY_EXEC /* private xwr */
-
-#define __S000 PAGE_NONE /* shared --- */
-#define __S001 PAGE_READONLY /* shared --r */
-#define __S010 PAGE_SHARED /* shared -w- */
-#define __S011 PAGE_SHARED /* shared -wr */
-#define __S100 PAGE_READONLY_EXEC /* shared x-- */
-#define __S101 PAGE_READONLY_EXEC /* shared x-r */
-#define __S110 PAGE_SHARED_EXEC/* shared xw- */
-#define __S111 PAGE_SHARED_EXEC/* shared xwr */
-
#ifndef __ASSEMBLY__
#define pte_ERROR(e) \
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c
index 6a32b2cf2718..b2587a1a7c46 100644
--- a/arch/xtensa/mm/init.c
+++ b/arch/xtensa/mm/init.c
@@ -216,3 +216,25 @@ static int __init parse_memmap_opt(char *str)
return 0;
}
early_param("memmap", parse_memmap_opt);
+
+#ifdef CONFIG_MMU
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_EXEC,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_EXEC
+};
+DECLARE_VM_GET_PAGE_PROT
+#endif
--
2.25.1
___
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[PATCH V7 10/26] openrisc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Jonas Bonn
Cc: openr...@lists.librecores.org
Cc: linux-ker...@vger.kernel.org
Acked-by: Stafford Horne
Signed-off-by: Anshuman Khandual
---
arch/openrisc/Kconfig | 1 +
arch/openrisc/include/asm/pgtable.h | 18 --
arch/openrisc/mm/init.c | 20
3 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
index e814df4c483c..fe0dfb50eb86 100644
--- a/arch/openrisc/Kconfig
+++ b/arch/openrisc/Kconfig
@@ -10,6 +10,7 @@ config OPENRISC
select ARCH_HAS_DMA_SET_UNCACHED
select ARCH_HAS_DMA_CLEAR_UNCACHED
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_VM_GET_PAGE_PROT
select COMMON_CLK
select OF
select OF_EARLY_FLATTREE
diff --git a/arch/openrisc/include/asm/pgtable.h
b/arch/openrisc/include/asm/pgtable.h
index c3abbf71e09f..dcae8aea132f 100644
--- a/arch/openrisc/include/asm/pgtable.h
+++ b/arch/openrisc/include/asm/pgtable.h
@@ -176,24 +176,6 @@ extern void paging_init(void);
__pgprot(_PAGE_ALL | _PAGE_SRE | _PAGE_SWE \
| _PAGE_SHARED | _PAGE_DIRTY | _PAGE_EXEC | _PAGE_CI)
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY_X
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY_X
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY_X
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY_X
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY_X
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED_X
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY_X
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED_X
-
/* zero page used for uninitialized stuff */
extern unsigned long empty_zero_page[2048];
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c
index 3a021ab6f1ae..d531ab82be12 100644
--- a/arch/openrisc/mm/init.c
+++ b/arch/openrisc/mm/init.c
@@ -208,3 +208,23 @@ void __init mem_init(void)
mem_init_done = 1;
return;
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY_X,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY_X,
+ [VM_EXEC] = PAGE_READONLY,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_X,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY_X,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED_X,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_X
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
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[PATCH V7 09/26] loongarch/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Huacai Chen
Cc: WANG Xuerui
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/loongarch/Kconfig| 1 +
arch/loongarch/include/asm/pgtable-bits.h | 19 --
arch/loongarch/mm/cache.c | 46 +++
3 files changed, 47 insertions(+), 19 deletions(-)
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index 53a912befb62..ed55abcc3dbd 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -9,6 +9,7 @@ config LOONGARCH
select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI
select ARCH_HAS_PHYS_TO_DMA
select ARCH_HAS_PTE_SPECIAL
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_INLINE_READ_LOCK if !PREEMPTION
select ARCH_INLINE_READ_LOCK_BH if !PREEMPTION
diff --git a/arch/loongarch/include/asm/pgtable-bits.h
b/arch/loongarch/include/asm/pgtable-bits.h
index 3badd112d9ab..9ca147a29bab 100644
--- a/arch/loongarch/include/asm/pgtable-bits.h
+++ b/arch/loongarch/include/asm/pgtable-bits.h
@@ -83,25 +83,6 @@
_PAGE_GLOBAL | _PAGE_KERN | _CACHE_SUC)
#define PAGE_KERNEL_WUC __pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE | \
_PAGE_GLOBAL | _PAGE_KERN | _CACHE_WUC)
-
-#define __P000 __pgprot(_CACHE_CC | _PAGE_USER | _PAGE_PROTNONE |
_PAGE_NO_EXEC | _PAGE_NO_READ)
-#define __P001 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC)
-#define __P010 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC)
-#define __P011 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC)
-#define __P100 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-#define __P101 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-#define __P110 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-#define __P111 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-
-#define __S000 __pgprot(_CACHE_CC | _PAGE_USER | _PAGE_PROTNONE |
_PAGE_NO_EXEC | _PAGE_NO_READ)
-#define __S001 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC)
-#define __S010 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC | _PAGE_WRITE)
-#define __S011 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC | _PAGE_WRITE)
-#define __S100 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-#define __S101 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-#define __S110 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_WRITE)
-#define __S111 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_WRITE)
-
#ifndef __ASSEMBLY__
#define pgprot_noncached pgprot_noncached
diff --git a/arch/loongarch/mm/cache.c b/arch/loongarch/mm/cache.c
index 9e5ce5aa73f7..e8c68dcf6ab2 100644
--- a/arch/loongarch/mm/cache.c
+++ b/arch/loongarch/mm/cache.c
@@ -139,3 +139,49 @@ void cpu_cache_init(void)
shm_align_mask = PAGE_SIZE - 1;
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = __pgprot(_CACHE_CC |
_PAGE_USER |
+
_PAGE_PROTNONE | _PAGE_NO_EXEC |
+
_PAGE_NO_READ),
+ [VM_READ] = __pgprot(_CACHE_CC |
_PAGE_VALID |
+ _PAGE_USER |
_PAGE_PRESENT |
+
_PAGE_NO_EXEC),
+ [VM_WRITE] = __pgprot(_CACHE_CC |
_PAGE_VALID |
+ _PAGE_USER |
_PAGE_PRESENT |
+
_PAGE_NO_EXEC),
+ [VM_WRITE | VM_READ]= __pgprot(_CACHE_CC |
_PAGE_VALID |
+ _PAGE_USER |
_PAGE_PRESENT |
+
_PAGE_NO_EXEC),
+ [VM_EXEC] = __pgprot(_CACHE_CC |
_PAGE_VALID |
+ _PAGE_USER |
_PAGE_PRESENT),
+ [VM_EXEC | VM_READ] = __pgprot(_CACHE_CC |
_PAGE_VALID |
+ _PAGE_USER |
_PAGE_PRESENT),
+ [VM_EXEC
[PATCH V7 08/26] microblaze/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Michal Simek
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/microblaze/Kconfig | 1 +
arch/microblaze/include/asm/pgtable.h | 17 -
arch/microblaze/mm/init.c | 20
3 files changed, 21 insertions(+), 17 deletions(-)
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 8cf429ad1c84..15f91ba8a0c4 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -7,6 +7,7 @@ config MICROBLAZE
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_WANT_IPC_PARSE_VERSION
select BUILDTIME_TABLE_SORT
diff --git a/arch/microblaze/include/asm/pgtable.h
b/arch/microblaze/include/asm/pgtable.h
index 0c72646370e1..ba348e997dbb 100644
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -204,23 +204,6 @@ extern pte_t *va_to_pte(unsigned long address);
* We consider execute permission the same as read.
* Also, write permissions imply read permissions.
*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY_X
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY_X
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY_X
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY_X
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY_X
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED_X
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY_X
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED_X
#ifndef __ASSEMBLY__
/*
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index f4e503461d24..353fabdfcbc5 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -285,3 +285,23 @@ void * __ref zalloc_maybe_bootmem(size_t size, gfp_t mask)
return p;
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY_X,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY_X,
+ [VM_EXEC] = PAGE_READONLY,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_X,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY_X,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED_X,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_X
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
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[PATCH V7 07/26] mm/mmap: Build protect protection_map[] with ARCH_HAS_VM_GET_PAGE_PROT
Now that protection_map[] has been moved inside those platforms that enable
ARCH_HAS_VM_GET_PAGE_PROT. Hence generic protection_map[] array now can be
protected with CONFIG_ARCH_HAS_VM_GET_PAGE_PROT intead of __P000.
Cc: Andrew Morton
Cc: linux...@kvack.org
Cc: linux-ker...@vger.kernel.org
Reviewed-by: Christophe Leroy
Signed-off-by: Anshuman Khandual
---
include/linux/mm.h | 2 +-
mm/mmap.c | 5 +
2 files changed, 2 insertions(+), 5 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 0ff0a1bad091..07b56995e0fe 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -424,7 +424,7 @@ extern unsigned int kobjsize(const void *objp);
* mapping from the currently active vm_flags protection bits (the
* low four bits) to a page protection mask..
*/
-#ifdef __P000
+#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
extern pgprot_t protection_map[16];
#endif
diff --git a/mm/mmap.c b/mm/mmap.c
index b46d5e931bb3..2cc722e162fa 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -81,7 +81,7 @@ static void unmap_region(struct mm_struct *mm,
struct vm_area_struct *vma, struct vm_area_struct *prev,
unsigned long start, unsigned long end);
-#ifdef __P000
+#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
pgprot_t protection_map[16] __ro_after_init = {
[VM_NONE] = __P000,
[VM_READ] = __P001,
@@ -100,9 +100,6 @@ pgprot_t protection_map[16] __ro_after_init = {
[VM_SHARED | VM_EXEC | VM_WRITE]= __S110,
[VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = __S111
};
-#endif
-
-#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
DECLARE_VM_GET_PAGE_PROT
#endif /* CONFIG_ARCH_HAS_VM_GET_PAGE_PROT */
--
2.25.1
___
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[PATCH V7 06/26] x86/mm: Move protection_map[] inside the platform
This moves protection_map[] inside the platform and makes it a static. This
also defines a helper function add_encrypt_protection_map() that can update
the protection_map[] array with pgprot_encrypted().
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: x...@kernel.org
Cc: linux-ker...@vger.kernel.org
Reviewed-by: Christoph Hellwig
Signed-off-by: Anshuman Khandual
---
arch/x86/include/asm/mem_encrypt.h | 2 ++
arch/x86/include/asm/pgtable_types.h | 19 ---
arch/x86/mm/mem_encrypt_amd.c| 6 ++
arch/x86/mm/pgprot.c | 28
4 files changed, 32 insertions(+), 23 deletions(-)
diff --git a/arch/x86/include/asm/mem_encrypt.h
b/arch/x86/include/asm/mem_encrypt.h
index 88ceaf3648b3..72ca90552b6a 100644
--- a/arch/x86/include/asm/mem_encrypt.h
+++ b/arch/x86/include/asm/mem_encrypt.h
@@ -89,6 +89,8 @@ static inline void mem_encrypt_free_decrypted_mem(void) { }
/* Architecture __weak replacement functions */
void __init mem_encrypt_init(void);
+void add_encrypt_protection_map(void);
+
/*
* The __sme_pa() and __sme_pa_nodebug() macros are meant for use when
* writing to or comparing values from the cr3 register. Having the
diff --git a/arch/x86/include/asm/pgtable_types.h
b/arch/x86/include/asm/pgtable_types.h
index bdaf8391e2e0..aa174fed3a71 100644
--- a/arch/x86/include/asm/pgtable_types.h
+++ b/arch/x86/include/asm/pgtable_types.h
@@ -230,25 +230,6 @@ enum page_cache_mode {
#endif /* __ASSEMBLY__ */
-/* xwr */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY_EXEC
-#define __P101 PAGE_READONLY_EXEC
-#define __P110 PAGE_COPY_EXEC
-#define __P111 PAGE_COPY_EXEC
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY_EXEC
-#define __S101 PAGE_READONLY_EXEC
-#define __S110 PAGE_SHARED_EXEC
-#define __S111 PAGE_SHARED_EXEC
-
/*
* early identity mapping pte attrib macros.
*/
diff --git a/arch/x86/mm/mem_encrypt_amd.c b/arch/x86/mm/mem_encrypt_amd.c
index f6d038e2cd8e..5c3c3ed46f5a 100644
--- a/arch/x86/mm/mem_encrypt_amd.c
+++ b/arch/x86/mm/mem_encrypt_amd.c
@@ -26,6 +26,7 @@
#include
#include
#include
+#include
#include
#include
#include
@@ -486,8 +487,6 @@ void __init early_set_mem_enc_dec_hypercall(unsigned long
vaddr, int npages, boo
void __init sme_early_init(void)
{
- unsigned int i;
-
if (!sme_me_mask)
return;
@@ -496,8 +495,7 @@ void __init sme_early_init(void)
__supported_pte_mask = __sme_set(__supported_pte_mask);
/* Update the protection map with memory encryption mask */
- for (i = 0; i < ARRAY_SIZE(protection_map); i++)
- protection_map[i] = pgprot_encrypted(protection_map[i]);
+ add_encrypt_protection_map();
x86_platform.guest.enc_status_change_prepare =
amd_enc_status_change_prepare;
x86_platform.guest.enc_status_change_finish =
amd_enc_status_change_finish;
diff --git a/arch/x86/mm/pgprot.c b/arch/x86/mm/pgprot.c
index 763742782286..c84bd9540b16 100644
--- a/arch/x86/mm/pgprot.c
+++ b/arch/x86/mm/pgprot.c
@@ -3,6 +3,34 @@
#include
#include
#include
+#include
+
+static pgprot_t protection_map[16] __ro_after_init = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_EXEC,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_EXEC
+};
+
+void add_encrypt_protection_map(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(protection_map); i++)
+ protection_map[i] = pgprot_encrypted(protection_map[i]);
+}
pgprot_t vm_get_page_prot(unsigned long vm_flags)
{
--
2.25.1
___
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[PATCH V7 05/26] arm64/mm: Move protection_map[] inside the platform
This moves protection_map[] inside the platform and makes it a static.
Cc: Catalin Marinas
Cc: Will Deacon
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Reviewed-by: Catalin Marinas
Signed-off-by: Anshuman Khandual
---
arch/arm64/include/asm/pgtable-prot.h | 18 --
arch/arm64/mm/mmap.c | 21 +
2 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/arm64/include/asm/pgtable-prot.h
b/arch/arm64/include/asm/pgtable-prot.h
index 62e0ebeed720..9b165117a454 100644
--- a/arch/arm64/include/asm/pgtable-prot.h
+++ b/arch/arm64/include/asm/pgtable-prot.h
@@ -89,24 +89,6 @@ extern bool arm64_use_ng_mappings;
#define PAGE_READONLY_EXEC __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_RDONLY
| PTE_NG | PTE_PXN)
#define PAGE_EXECONLY __pgprot(_PAGE_DEFAULT | PTE_RDONLY | PTE_NG |
PTE_PXN)
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_READONLY
-#define __P011 PAGE_READONLY
-#define __P100 PAGE_READONLY_EXEC /* PAGE_EXECONLY if Enhanced PAN */
-#define __P101 PAGE_READONLY_EXEC
-#define __P110 PAGE_READONLY_EXEC
-#define __P111 PAGE_READONLY_EXEC
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY_EXEC /* PAGE_EXECONLY if Enhanced PAN */
-#define __S101 PAGE_READONLY_EXEC
-#define __S110 PAGE_SHARED_EXEC
-#define __S111 PAGE_SHARED_EXEC
-
#endif /* __ASSEMBLY__ */
#endif /* __ASM_PGTABLE_PROT_H */
diff --git a/arch/arm64/mm/mmap.c b/arch/arm64/mm/mmap.c
index 78e9490f748d..8f5b7ce857ed 100644
--- a/arch/arm64/mm/mmap.c
+++ b/arch/arm64/mm/mmap.c
@@ -13,6 +13,27 @@
#include
#include
+static pgprot_t protection_map[16] __ro_after_init = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_READONLY,
+ [VM_WRITE | VM_READ]= PAGE_READONLY,
+ /* PAGE_EXECONLY if Enhanced PAN */
+ [VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_WRITE]= PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ /* PAGE_EXECONLY if Enhanced PAN */
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_EXEC
+};
+
/*
* You really shouldn't be using read() or write() on /dev/mem. This might go
* away in the future.
--
2.25.1
___
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[PATCH V7 04/26] sparc/mm: Move protection_map[] inside the platform
This moves protection_map[] inside the platform and while here, also enable
ARCH_HAS_VM_GET_PAGE_PROT on 32 bit platforms via DECLARE_VM_GET_PAGE_PROT.
Cc: "David S. Miller"
Cc: sparcli...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Reviewed-by: Sam Ravnborg
Signed-off-by: Anshuman Khandual
---
arch/sparc/Kconfig | 2 +-
arch/sparc/include/asm/pgtable_32.h | 19 ---
arch/sparc/include/asm/pgtable_64.h | 19 ---
arch/sparc/mm/init_32.c | 20
arch/sparc/mm/init_64.c | 3 +++
5 files changed, 24 insertions(+), 39 deletions(-)
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index ba449c47effd..09f868613a4d 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -13,6 +13,7 @@ config 64BIT
config SPARC
bool
default y
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
select ARCH_MIGHT_HAVE_PC_SERIO
select DMA_OPS
@@ -84,7 +85,6 @@ config SPARC64
select PERF_USE_VMALLOC
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select HAVE_C_RECORDMCOUNT
- select ARCH_HAS_VM_GET_PAGE_PROT
select HAVE_ARCH_AUDITSYSCALL
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_SUPPORTS_DEBUG_PAGEALLOC
diff --git a/arch/sparc/include/asm/pgtable_32.h
b/arch/sparc/include/asm/pgtable_32.h
index 4866625da314..8ff549004fac 100644
--- a/arch/sparc/include/asm/pgtable_32.h
+++ b/arch/sparc/include/asm/pgtable_32.h
@@ -64,25 +64,6 @@ void paging_init(void);
extern unsigned long ptr_in_current_pgd;
-/* xwr */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED
-
/* First physical page can be anywhere, the following is needed so that
* va-->pa and vice versa conversions work properly without performance
* hit for all __pa()/__va() operations.
diff --git a/arch/sparc/include/asm/pgtable_64.h
b/arch/sparc/include/asm/pgtable_64.h
index 4679e45c8348..a779418ceba9 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -187,25 +187,6 @@ bool kern_addr_valid(unsigned long addr);
#define _PAGE_SZHUGE_4U_PAGE_SZ4MB_4U
#define _PAGE_SZHUGE_4V_PAGE_SZ4MB_4V
-/* These are actually filled in at boot time by sun4{u,v}_pgprot_init() */
-#define __P000 __pgprot(0)
-#define __P001 __pgprot(0)
-#define __P010 __pgprot(0)
-#define __P011 __pgprot(0)
-#define __P100 __pgprot(0)
-#define __P101 __pgprot(0)
-#define __P110 __pgprot(0)
-#define __P111 __pgprot(0)
-
-#define __S000 __pgprot(0)
-#define __S001 __pgprot(0)
-#define __S010 __pgprot(0)
-#define __S011 __pgprot(0)
-#define __S100 __pgprot(0)
-#define __S101 __pgprot(0)
-#define __S110 __pgprot(0)
-#define __S111 __pgprot(0)
-
#ifndef __ASSEMBLY__
pte_t mk_pte_io(unsigned long, pgprot_t, int, unsigned long);
diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c
index 1e9f577f084d..d88e774c8eb4 100644
--- a/arch/sparc/mm/init_32.c
+++ b/arch/sparc/mm/init_32.c
@@ -302,3 +302,23 @@ void sparc_flush_page_to_ram(struct page *page)
__flush_page_to_ram(vaddr);
}
EXPORT_SYMBOL(sparc_flush_page_to_ram);
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_READONLY,
+ [VM_EXEC | VM_READ] = PAGE_READONLY,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED
+};
+DECLARE_VM_GET_PAGE_PROT
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index f6174df2d5af..d6faee23c77d 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64
[PATCH V7 03/26] powerpc/mm: Move protection_map[] inside the platform
This moves protection_map[] inside the platform and while here, also enable
ARCH_HAS_VM_GET_PAGE_PROT on 32 bit and nohash 64 (aka book3e/64) platforms
via DECLARE_VM_GET_PAGE_PROT.
Cc: Michael Ellerman
Cc: Paul Mackerras
Cc: Nicholas Piggin
Cc: linuxppc-...@lists.ozlabs.org
Cc: linux-ker...@vger.kernel.org
Reviewed-by: Christophe Leroy
Signed-off-by: Anshuman Khandual
---
arch/powerpc/Kconfig | 2 +-
arch/powerpc/include/asm/pgtable.h | 20 +---
arch/powerpc/mm/pgtable.c | 24
3 files changed, 26 insertions(+), 20 deletions(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 7aa12e88c580..40cdd1f2dbaf 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -140,7 +140,7 @@ config PPC
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAS_UACCESS_FLUSHCACHE
select ARCH_HAS_UBSAN_SANITIZE_ALL
- select ARCH_HAS_VM_GET_PAGE_PROTif PPC_BOOK3S_64
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_KEEP_MEMBLOCK
select ARCH_MIGHT_HAVE_PC_PARPORT
diff --git a/arch/powerpc/include/asm/pgtable.h
b/arch/powerpc/include/asm/pgtable.h
index d564d0ecd4cd..33f4bf8d22b0 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h
@@ -20,25 +20,6 @@ struct mm_struct;
#include
#endif /* !CONFIG_PPC_BOOK3S */
-/* Note due to the way vm flags are laid out, the bits are XWR */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY_X
-#define __P101 PAGE_READONLY_X
-#define __P110 PAGE_COPY_X
-#define __P111 PAGE_COPY_X
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY_X
-#define __S101 PAGE_READONLY_X
-#define __S110 PAGE_SHARED_X
-#define __S111 PAGE_SHARED_X
-
#ifndef __ASSEMBLY__
#ifndef MAX_PTRS_PER_PGD
@@ -79,6 +60,7 @@ extern void paging_init(void);
void poking_init(void);
extern unsigned long ioremap_bot;
+extern const pgprot_t protection_map[16];
/*
* kern_addr_valid is intended to indicate whether an address is a valid
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
index e6166b71d36d..cb2dcdb18f8e 100644
--- a/arch/powerpc/mm/pgtable.c
+++ b/arch/powerpc/mm/pgtable.c
@@ -472,3 +472,27 @@ pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea,
return ret_pte;
}
EXPORT_SYMBOL_GPL(__find_linux_pte);
+
+/* Note due to the way vm flags are laid out, the bits are XWR */
+const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_READONLY_X,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY_X,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_X,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY_X,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED_X,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_X
+};
+
+#ifndef CONFIG_PPC_BOOK3S_64
+DECLARE_VM_GET_PAGE_PROT
+#endif
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V7 02/26] mm/mmap: Define DECLARE_VM_GET_PAGE_PROT
This just converts the generic vm_get_page_prot() implementation into a new
macro i.e DECLARE_VM_GET_PAGE_PROT which later can be used across platforms
when enabling them with ARCH_HAS_VM_GET_PAGE_PROT. This does not create any
functional change.
Cc: Andrew Morton
Cc: linux...@kvack.org
Cc: linux-ker...@vger.kernel.org
Reviewed-by: Christophe Leroy
Suggested-by: Christoph Hellwig
Signed-off-by: Anshuman Khandual
---
include/linux/pgtable.h | 28
mm/mmap.c | 26 +-
2 files changed, 29 insertions(+), 25 deletions(-)
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index 3cdc16cfd867..014ee8f0fbaa 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -1689,4 +1689,32 @@ typedef unsigned int pgtbl_mod_mask;
#define MAX_PTRS_PER_P4D PTRS_PER_P4D
#endif
+/* description of effects of mapping type and prot in current implementation.
+ * this is due to the limited x86 page protection hardware. The expected
+ * behavior is in parens:
+ *
+ * map_typeprot
+ * PROT_NONE PROT_READ PROT_WRITE PROT_EXEC
+ * MAP_SHARED r: (no) no r: (yes) yesr: (no) yes r: (no) yes
+ * w: (no) no w: (no) no w: (yes) yesw: (no) no
+ * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
+ *
+ * MAP_PRIVATE r: (no) no r: (yes) yesr: (no) yes r: (no) yes
+ * w: (no) no w: (no) no w: (copy) copy w: (no) no
+ * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
+ *
+ * On arm64, PROT_EXEC has the following behaviour for both MAP_SHARED and
+ * MAP_PRIVATE (with Enhanced PAN supported):
+ * r: (no) no
+ * w: (no) no
+ * x: (yes) yes
+ */
+#define DECLARE_VM_GET_PAGE_PROT \
+pgprot_t vm_get_page_prot(unsigned long vm_flags) \
+{ \
+ return protection_map[vm_flags &\
+ (VM_READ | VM_WRITE | VM_EXEC | VM_SHARED)];\
+} \
+EXPORT_SYMBOL(vm_get_page_prot);
+
#endif /* _LINUX_PGTABLE_H */
diff --git a/mm/mmap.c b/mm/mmap.c
index b01f0280bda2..b46d5e931bb3 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -81,26 +81,6 @@ static void unmap_region(struct mm_struct *mm,
struct vm_area_struct *vma, struct vm_area_struct *prev,
unsigned long start, unsigned long end);
-/* description of effects of mapping type and prot in current implementation.
- * this is due to the limited x86 page protection hardware. The expected
- * behavior is in parens:
- *
- * map_typeprot
- * PROT_NONE PROT_READ PROT_WRITE PROT_EXEC
- * MAP_SHARED r: (no) no r: (yes) yesr: (no) yes r: (no) yes
- * w: (no) no w: (no) no w: (yes) yesw: (no) no
- * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
- *
- * MAP_PRIVATE r: (no) no r: (yes) yesr: (no) yes r: (no) yes
- * w: (no) no w: (no) no w: (copy) copy w: (no) no
- * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
- *
- * On arm64, PROT_EXEC has the following behaviour for both MAP_SHARED and
- * MAP_PRIVATE (with Enhanced PAN supported):
- * r: (no) no
- * w: (no) no
- * x: (yes) yes
- */
#ifdef __P000
pgprot_t protection_map[16] __ro_after_init = {
[VM_NONE] = __P000,
@@ -123,11 +103,7 @@ pgprot_t protection_map[16] __ro_after_init = {
#endif
#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
-pgprot_t vm_get_page_prot(unsigned long vm_flags)
-{
- return protection_map[vm_flags & (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)];
-}
-EXPORT_SYMBOL(vm_get_page_prot);
+DECLARE_VM_GET_PAGE_PROT
#endif /* CONFIG_ARCH_HAS_VM_GET_PAGE_PROT */
static pgprot_t vm_pgprot_modify(pgprot_t oldprot, unsigned long vm_flags)
--
2.25.1
___
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V7 01/26] mm/mmap: Build protect protection_map[] with __P000
Build protect generic protection_map[] array with __P000, so that it can be
moved inside all the platforms one after the other. Otherwise there will be
build failures during this process. CONFIG_ARCH_HAS_VM_GET_PAGE_PROT cannot
be used for this purpose as only certain platforms enable this config now.
Cc: Andrew Morton
Cc: linux...@kvack.org
Cc: linux-ker...@vger.kernel.org
Reviewed-by: Christoph Hellwig
Reviewed-by: Christophe Leroy
Suggested-by: Christophe Leroy
Signed-off-by: Anshuman Khandual
---
include/linux/mm.h | 2 ++
mm/mmap.c | 2 ++
2 files changed, 4 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index cf3d0d673f6b..0ff0a1bad091 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -424,7 +424,9 @@ extern unsigned int kobjsize(const void *objp);
* mapping from the currently active vm_flags protection bits (the
* low four bits) to a page protection mask..
*/
+#ifdef __P000
extern pgprot_t protection_map[16];
+#endif
/*
* The default fault flags that should be used by most of the
diff --git a/mm/mmap.c b/mm/mmap.c
index 61e6135c54ef..b01f0280bda2 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -101,6 +101,7 @@ static void unmap_region(struct mm_struct *mm,
* w: (no) no
* x: (yes) yes
*/
+#ifdef __P000
pgprot_t protection_map[16] __ro_after_init = {
[VM_NONE] = __P000,
[VM_READ] = __P001,
@@ -119,6 +120,7 @@ pgprot_t protection_map[16] __ro_after_init = {
[VM_SHARED | VM_EXEC | VM_WRITE]= __S110,
[VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = __S111
};
+#endif
#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
pgprot_t vm_get_page_prot(unsigned long vm_flags)
--
2.25.1
___
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[PATCH V7 00/26] mm/mmap: Drop __SXXX/__PXXX macros from across platforms
__SXXX/__PXXX macros is an unnecessary abstraction layer in creating the generic protection_map[] array which is used for vm_get_page_prot(). This abstraction layer can be avoided, if the platforms just define the array protection_map[] for all possible vm_flags access permission combinations and also export vm_get_page_prot() implementation. This series drops __SXXX/__PXXX macros from across platforms in the tree. First it build protects generic protection_map[] array with '#ifdef __P000' and moves it inside platforms which enable ARCH_HAS_VM_GET_PAGE_PROT. Later this build protects same array with '#ifdef ARCH_HAS_VM_GET_PAGE_PROT' and moves inside remaining platforms while enabling ARCH_HAS_VM_GET_PAGE_PROT. This adds a new macro DECLARE_VM_GET_PAGE_PROT defining the current generic vm_get_page_prot(), in order for it to be reused on platforms that do not require custom implementation. Finally, ARCH_HAS_VM_GET_PAGE_PROT can just be dropped, as all platforms now define and export vm_get_page_prot(), via looking up a private and static protection_map[] array. protection_map[] data type has been changed as 'static const' on all platforms that do not change it during boot. This series applies on v5.19-rc6 and has been build tested for multiple platforms. While here it has dropped off all previous tags from folks after the current restructuring. Series common CC list has been expanded to cover all impacted platforms for wider reach. - Anshuman Changes in V7: - Dropped comments from arch/m68k/include/asm/mcf_pgtable.h per Geert - Dropped comments from arch/m68k/include/asm/sun3_pgtable.h per Geert - Moved the *_C definitions above into arch/m68k/mm/motorola.c per Geert - Folded in following build failure fix patches on linux-next https://lore.kernel.org/all/20220705221411.3381797-1-jcmvb...@gmail.com/ https://lore.kernel.org/all/20220706054002.1936820-1-anshuman.khand...@arm.com/ https://lore.kernel.org/all/20220708230646.ca9b7c34...@smtp.kernel.org/ - Collected tags from Geert - Rebased on v5.19-rc6 Changes in V6: https://lore.kernel.org/all/20220630051630.1718927-1-anshuman.khand...@arm.com/ - Converted protection_map[] array as 'static const' on sparc32 platform - Rebased on v5.19-rc4 - Collected tags Changes in V5: https://lore.kernel.org/all/20220627045833.1590055-1-anshuman.khand...@arm.com/ - Converted most platfomr protection_map[] array as 'static const' - Moved DECLARE_VM_GET_PAGE_PROT inside - Moved generic protection_map[] comment near DECLARE_VM_GET_PAGE_PROT - Updated some commit messages Changes in V4: https://lore.kernel.org/all/20220624044339.1533882-1-anshuman.khand...@arm.com/ - Both protection_map[] and vm_get_page_prot() moves inside all platforms - Split patches to create modular changes for individual platforms - Add macro DECLARE_VM_GET_PAGE_PROT defining generic vm_get_page_prot() - Drop ARCH_HAS_VM_GET_PAGE_PROT Changes in V3: https://lore.kernel.org/all/20220616040924.1022607-1-anshuman.khand...@arm.com/ - Fix build issues on powerpc and riscv Changes in V2: https://lore.kernel.org/all/20220613053354.553579-1-anshuman.khand...@arm.com/ - Add 'const' identifier to protection_map[] on powerpc - Dropped #ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT check from sparc 32 - Dropped protection_map[] init from sparc 64 - Dropped all new platform changes subscribing ARCH_HAS_VM_GET_PAGE_PROT - Added a second patch which moves generic protection_map[] array into all remaining platforms (!ARCH_HAS_VM_GET_PAGE_PROT) Changes in V1: https://lore.kernel.org/all/20220603101411.488970-1-anshuman.khand...@arm.com/ Cc: Andrew Morton Cc: Christoph Hellwig Cc: Christophe Leroy Cc: linuxppc-...@lists.ozlabs.org Cc: sparcli...@vger.kernel.org Cc: x...@kernel.org Cc: openr...@lists.librecores.org Cc: linux-xte...@linux-xtensa.org Cc: linux-c...@vger.kernel.org Cc: linux-hexa...@vger.kernel.org Cc: linux-par...@vger.kernel.org Cc: linux-al...@vger.kernel.org Cc: linux-ri...@lists.infradead.org Cc: linux-c...@vger.kernel.org Cc: linux-s...@vger.kernel.org Cc: linux-i...@vger.kernel.org Cc: linux-m...@vger.kernel.org Cc: linux-m...@lists.linux-m68k.org Cc: linux-snps-arc@lists.infradead.org Cc: linux-arm-ker...@lists.infradead.org Cc: linux...@lists.infradead.org Cc: linux...@vger.kernel.org Cc: linux...@kvack.org Cc: linux-ker...@vger.kernel.org Anshuman Khandual (26): mm/mmap: Build protect protection_map[] with __P000 mm/mmap: Define DECLARE_VM_GET_PAGE_PROT powerpc/mm: Move protection_map[] inside the platform sparc/mm: Move protection_map[] inside the platform arm64/mm: Move protection_map[] inside the platform x86/mm: Move protection_map[] inside the platform mm/mmap: Build protect protection_map[] with ARCH_HAS_VM_GET_PAGE_PROT microblaze/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT loongarch/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT openrisc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT xten
Re: [PATCH V6 21/26] m68k/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
On 7/6/22 15:33, Geert Uytterhoeven wrote:
> Hi Anshuman,
>
> On Thu, Jun 30, 2022 at 7:19 AM Anshuman Khandual
> wrote:
>> This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
>> vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
>> up a private and static protection_map[] array. Subsequently all __SXXX and
>> __PXXX macros can be dropped which are no longer needed.
>>
>> Cc: Thomas Bogendoerfer
>> Cc: linux-m...@lists.linux-m68k.org
>> Cc: linux-ker...@vger.kernel.org
>> Signed-off-by: Anshuman Khandual
>
> Thanks for your patch!
>
>> --- a/arch/m68k/include/asm/mcf_pgtable.h
>> +++ b/arch/m68k/include/asm/mcf_pgtable.h
>> @@ -91,60 +91,6 @@
>> * for use. In general, the bit positions are xwr, and P-items are
>> * private, the S-items are shared.
>> */
>
> The comment above should be removed, too.
Sure, will do.
>
>> -#define __P000 PAGE_NONE
>> -#define __P001 __pgprot(CF_PAGE_VALID \
>> -| CF_PAGE_ACCESSED \
>> -| CF_PAGE_READABLE)
>
>> --- a/arch/m68k/include/asm/motorola_pgtable.h
>> +++ b/arch/m68k/include/asm/motorola_pgtable.h
>> @@ -83,28 +83,6 @@ extern unsigned long mm_cachebits;
>> #define PAGE_COPY_C__pgprot(_PAGE_PRESENT | _PAGE_RONLY |
>> _PAGE_ACCESSED)
>> #define PAGE_READONLY_C__pgprot(_PAGE_PRESENT | _PAGE_RONLY |
>> _PAGE_ACCESSED)
>
> You might move the *_C definitions above into arch/m68k/mm/motorola.c
> as well, as they are only used in the latter.
Okay, will do.
>
>>
>> -/*
>> - * The m68k can't do page protection for execute, and considers that the
>> same are read.
>> - * Also, write permissions imply read permissions. This is the closest we
>> can get..
>> - */
>> -#define __P000 PAGE_NONE_C
>> -#define __P001 PAGE_READONLY_C
>> -#define __P010 PAGE_COPY_C
>> -#define __P011 PAGE_COPY_C
>> -#define __P100 PAGE_READONLY_C
>> -#define __P101 PAGE_READONLY_C
>> -#define __P110 PAGE_COPY_C
>> -#define __P111 PAGE_COPY_C
>> -
>> -#define __S000 PAGE_NONE_C
>> -#define __S001 PAGE_READONLY_C
>> -#define __S010 PAGE_SHARED_C
>> -#define __S011 PAGE_SHARED_C
>> -#define __S100 PAGE_READONLY_C
>> -#define __S101 PAGE_READONLY_C
>> -#define __S110 PAGE_SHARED_C
>> -#define __S111 PAGE_SHARED_C
>> -
>> #define pmd_pgtable(pmd) ((pgtable_t)pmd_page_vaddr(pmd))
>>
>> /*
>> diff --git a/arch/m68k/include/asm/sun3_pgtable.h
>> b/arch/m68k/include/asm/sun3_pgtable.h
>> index 5e4e753f0d24..9d919491765b 100644
>> --- a/arch/m68k/include/asm/sun3_pgtable.h
>> +++ b/arch/m68k/include/asm/sun3_pgtable.h
>> @@ -71,23 +71,6 @@
>> * protection settings, valid (implying read and execute) and writeable.
>> These
>> * are as close as we can get...
>> */
>
> The comment above should be removed, too.
Sure, will do.
>
>> -#define __P000 PAGE_NONE
>> -#define __P001 PAGE_READONLY
>
> With the above fixed:
> Reviewed-by: Geert Uytterhoeven
> Acked-by: Geert Uytterhoeven >
> Gr{oetje,eeting}s,
>
> Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 --
> ge...@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like
> that.
> -- Linus Torvalds
>
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Re: [PATCH V6 00/26] mm/mmap: Drop __SXXX/__PXXX macros from across platforms
On 7/6/22 12:34, Arnd Bergmann wrote: > On Wed, Jul 6, 2022 at 8:33 AM Christophe Leroy > wrote: > >> As far as I can see in Kconfig, CONFIG_MMU is user selectable on the >> following architectures: >> - ARM >> - M68K >> - RISCV >> - SH >> >> And is disabled by default on XTENSA. > > Right, the list is complete, though it's also default-enabled for > every CPU core on xtensa, and you can only disable it for > "custom" CPU cores. ARM, M68K, RISCV all have got them inside wrapper or files which are not built, without CONFIG_MMU. With build fixes for SH and XTENSA on linux-next, I guess we are good. ___ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc
Re: [PATCH V6 00/26] mm/mmap: Drop __SXXX/__PXXX macros from across platforms
On 6/30/22 10:46, Anshuman Khandual wrote: > __SXXX/__PXXX macros is an unnecessary abstraction layer in creating the > generic protection_map[] array which is used for vm_get_page_prot(). This > abstraction layer can be avoided, if the platforms just define the array > protection_map[] for all possible vm_flags access permission combinations > and also export vm_get_page_prot() implementation. > > This series drops __SXXX/__PXXX macros from across platforms in the tree. > First it build protects generic protection_map[] array with '#ifdef __P000' > and moves it inside platforms which enable ARCH_HAS_VM_GET_PAGE_PROT. Later > this build protects same array with '#ifdef ARCH_HAS_VM_GET_PAGE_PROT' and > moves inside remaining platforms while enabling ARCH_HAS_VM_GET_PAGE_PROT. > This adds a new macro DECLARE_VM_GET_PAGE_PROT defining the current generic > vm_get_page_prot(), in order for it to be reused on platforms that do not > require custom implementation. Finally, ARCH_HAS_VM_GET_PAGE_PROT can just > be dropped, as all platforms now define and export vm_get_page_prot(), via > looking up a private and static protection_map[] array. protection_map[] > data type has been changed as 'static const' on all platforms that do not > change it during boot. > > This series applies on v5.19-rc4 and has been build tested for multiple > platforms. While here it has dropped off all previous tags from folks after > the current restructuring. Series common CC list has been expanded to cover > all impacted platforms for wider reach. > > - Anshuman > > Changes in V6: > > - Converted protection_map[] array as 'static const' on sparc32 platform > - Rebased on v5.19-rc4 > - Collected tags There are two linux-next based build fixes for this series (listed below), when vm_get_page_prot() gets redefined with !CONFIG_MMU. Platform vm_get_page_prot() is required only with CONFIG_MMU enabled, otherwise there is a generic fallback stub in include/linux/mm.h https://lore.kernel.org/all/20220705221411.3381797-1-jcmvb...@gmail.com/ [xtensa] https://lore.kernel.org/all/20220706054002.1936820-1-anshuman.khand...@arm.com/ [sh] It does not seem CONFIG_MMU can be disabled on other platforms thus exposing a build failure. But just to be on the safer side, should all vm_get_page_prot() be wrapped around with #ifdef CONFIG_MMU ? In that case will resend the series with above build fixes folded back in as well. Please do suggest. Thank you. - Anshuman ___ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V6 26/26] mm/mmap: Drop ARCH_HAS_VM_GET_PAGE_PROT
Now all the platforms enable ARCH_HAS_GET_PAGE_PROT. They define and export own vm_get_page_prot() whether custom or standard DECLARE_VM_GET_PAGE_PROT. Hence there is no need for default generic fallback for vm_get_page_prot(). Just drop this fallback and also ARCH_HAS_GET_PAGE_PROT mechanism. Cc: Andrew Morton Cc: linux...@kvack.org Cc: linux-ker...@vger.kernel.org Reviewed-by: Christoph Hellwig Reviewed-by: Christophe Leroy Signed-off-by: Anshuman Khandual --- arch/alpha/Kconfig | 1 - arch/arc/Kconfig| 1 - arch/arm/Kconfig| 1 - arch/arm64/Kconfig | 1 - arch/csky/Kconfig | 1 - arch/hexagon/Kconfig| 1 - arch/ia64/Kconfig | 1 - arch/loongarch/Kconfig | 1 - arch/m68k/Kconfig | 1 - arch/microblaze/Kconfig | 1 - arch/mips/Kconfig | 1 - arch/nios2/Kconfig | 1 - arch/openrisc/Kconfig | 1 - arch/parisc/Kconfig | 1 - arch/powerpc/Kconfig| 1 - arch/riscv/Kconfig | 1 - arch/s390/Kconfig | 1 - arch/sh/Kconfig | 1 - arch/sparc/Kconfig | 1 - arch/um/Kconfig | 1 - arch/x86/Kconfig| 1 - arch/xtensa/Kconfig | 1 - include/linux/mm.h | 3 --- mm/Kconfig | 3 --- mm/mmap.c | 22 -- 25 files changed, 50 deletions(-) diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index db1c8b329461..7d0d26b5b3f5 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -2,7 +2,6 @@ config ALPHA bool default y - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_32BIT_USTAT_F_TINODE select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 8be56a5d8a9b..9e3653253ef2 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -13,7 +13,6 @@ config ARC select ARCH_HAS_SETUP_DMA_OPS select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC select ARCH_32BIT_OFF_T select BUILDTIME_TABLE_SORT diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index e153b6d4fc5b..7630ba9cb6cc 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -24,7 +24,6 @@ config ARM select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB || !MMU select ARCH_HAS_TEARDOWN_DMA_OPS if MMU select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAVE_CUSTOM_GPIO_H select ARCH_HAVE_NMI_SAFE_CMPXCHG if CPU_V7 || CPU_V7M || CPU_V6K select ARCH_HAS_GCOV_PROFILE_ALL diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 1652a9800ebe..7030bf3f8d6f 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -45,7 +45,6 @@ config ARM64 select ARCH_HAS_SYSCALL_WRAPPER select ARCH_HAS_TEARDOWN_DMA_OPS if IOMMU_SUPPORT select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAS_ZONE_DMA_SET if EXPERT select ARCH_HAVE_ELF_PROT select ARCH_HAVE_NMI_SAFE_CMPXCHG diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig index 588b8a9c68ed..21d72b078eef 100644 --- a/arch/csky/Kconfig +++ b/arch/csky/Kconfig @@ -6,7 +6,6 @@ config CSKY select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_QUEUED_RWLOCKS select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 && $(cc-option,-mbacktrace) diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig index bc4ceecd0588..54eadf265178 100644 --- a/arch/hexagon/Kconfig +++ b/arch/hexagon/Kconfig @@ -6,7 +6,6 @@ config HEXAGON def_bool y select ARCH_32BIT_OFF_T select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_NO_PREEMPT select DMA_GLOBAL_POOL # Other pending projects/to-do items. diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 0510a5737711..cb93769a9f2a 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -12,7 +12,6 @@ config IA64 select ARCH_HAS_DMA_MARK_CLEAN select ARCH_HAS_STRNCPY_FROM_USER select ARCH_HAS_STRNLEN_USER - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO select ACPI diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index fd07b8e760ee..1920d52653b4 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -9,7 +9,6 @@ config LOONGARCH select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI select ARCH_HAS_PHYS_TO_DMA select ARCH_HAS_PTE_SPECIAL - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
[PATCH V6 25/26] sh/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Yoshinori Sato
Cc: Rich Felker
Cc: linux...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/sh/Kconfig | 1 +
arch/sh/include/asm/pgtable.h | 17 -
arch/sh/mm/mmap.c | 20
3 files changed, 21 insertions(+), 17 deletions(-)
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 5f220e903e5a..91f3ea325388 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -12,6 +12,7 @@ config SUPERH
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HIBERNATION_POSSIBLE if MMU
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_WANT_IPC_PARSE_VERSION
diff --git a/arch/sh/include/asm/pgtable.h b/arch/sh/include/asm/pgtable.h
index d7ddb1ec86a0..6fb9ec54cf9b 100644
--- a/arch/sh/include/asm/pgtable.h
+++ b/arch/sh/include/asm/pgtable.h
@@ -89,23 +89,6 @@ static inline unsigned long phys_addr_mask(void)
* completely separate permission bits for user and kernel space.
*/
/*xwr*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_EXECREAD
-#define __P101 PAGE_EXECREAD
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_WRITEONLY
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_EXECREAD
-#define __S101 PAGE_EXECREAD
-#define __S110 PAGE_RWX
-#define __S111 PAGE_RWX
typedef pte_t *pte_addr_t;
diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c
index 6a1a1297baae..46c1183493af 100644
--- a/arch/sh/mm/mmap.c
+++ b/arch/sh/mm/mmap.c
@@ -162,3 +162,23 @@ int valid_mmap_phys_addr_range(unsigned long pfn, size_t
size)
{
return 1;
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_EXECREAD,
+ [VM_EXEC | VM_READ] = PAGE_EXECREAD,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_WRITEONLY,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_EXECREAD,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_EXECREAD,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_RWX,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_RWX
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
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[PATCH V6 24/26] um/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Jeff Dike
Cc: linux...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/um/Kconfig | 1 +
arch/um/include/asm/pgtable.h | 17 -
arch/um/kernel/mem.c | 20
arch/x86/um/mem_32.c | 2 +-
4 files changed, 22 insertions(+), 18 deletions(-)
diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index 4ec22e156a2e..7fb43654e5b5 100644
--- a/arch/um/Kconfig
+++ b/arch/um/Kconfig
@@ -10,6 +10,7 @@ config UML
select ARCH_HAS_KCOV
select ARCH_HAS_STRNCPY_FROM_USER
select ARCH_HAS_STRNLEN_USER
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_NO_PREEMPT
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_SECCOMP_FILTER
diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h
index 167e236d9bb8..66bc3f99d9be 100644
--- a/arch/um/include/asm/pgtable.h
+++ b/arch/um/include/asm/pgtable.h
@@ -68,23 +68,6 @@ extern unsigned long end_iomem;
* Also, write permissions imply read permissions. This is the closest we can
* get..
*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED
/*
* ZERO_PAGE is a global shared page that is always zero: used
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index 15295c3237a0..5b259f0a1f94 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -197,3 +197,23 @@ void *uml_kmalloc(int size, int flags)
{
return kmalloc(size, flags);
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_READONLY,
+ [VM_EXEC | VM_READ] = PAGE_READONLY,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED
+};
+DECLARE_VM_GET_PAGE_PROT
diff --git a/arch/x86/um/mem_32.c b/arch/x86/um/mem_32.c
index 19c5dbd46770..cafd01f730da 100644
--- a/arch/x86/um/mem_32.c
+++ b/arch/x86/um/mem_32.c
@@ -17,7 +17,7 @@ static int __init gate_vma_init(void)
gate_vma.vm_start = FIXADDR_USER_START;
gate_vma.vm_end = FIXADDR_USER_END;
gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
- gate_vma.vm_page_prot = __P101;
+ gate_vma.vm_page_prot = PAGE_READONLY;
return 0;
}
--
2.25.1
___
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[PATCH V6 23/26] arm/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Russell King
Cc: Arnd Bergmann
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/arm/Kconfig | 1 +
arch/arm/include/asm/pgtable.h | 17 -
arch/arm/lib/uaccess_with_memcpy.c | 2 +-
arch/arm/mm/mmu.c | 20
4 files changed, 22 insertions(+), 18 deletions(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7630ba9cb6cc..e153b6d4fc5b 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -24,6 +24,7 @@ config ARM
select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB || !MMU
select ARCH_HAS_TEARDOWN_DMA_OPS if MMU
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAVE_CUSTOM_GPIO_H
select ARCH_HAVE_NMI_SAFE_CMPXCHG if CPU_V7 || CPU_V7M || CPU_V6K
select ARCH_HAS_GCOV_PROFILE_ALL
diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
index cd1f84bb40ae..78a532068fec 100644
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@ -137,23 +137,6 @@ extern pgprot_t phys_mem_access_prot(struct file *file,
unsigned long pfn,
* 2) If we could do execute protection, then read is implied
* 3) write implies read permissions
*/
-#define __P000 __PAGE_NONE
-#define __P001 __PAGE_READONLY
-#define __P010 __PAGE_COPY
-#define __P011 __PAGE_COPY
-#define __P100 __PAGE_READONLY_EXEC
-#define __P101 __PAGE_READONLY_EXEC
-#define __P110 __PAGE_COPY_EXEC
-#define __P111 __PAGE_COPY_EXEC
-
-#define __S000 __PAGE_NONE
-#define __S001 __PAGE_READONLY
-#define __S010 __PAGE_SHARED
-#define __S011 __PAGE_SHARED
-#define __S100 __PAGE_READONLY_EXEC
-#define __S101 __PAGE_READONLY_EXEC
-#define __S110 __PAGE_SHARED_EXEC
-#define __S111 __PAGE_SHARED_EXEC
#ifndef __ASSEMBLY__
/*
diff --git a/arch/arm/lib/uaccess_with_memcpy.c
b/arch/arm/lib/uaccess_with_memcpy.c
index c30b689bec2e..14eecaaf295f 100644
--- a/arch/arm/lib/uaccess_with_memcpy.c
+++ b/arch/arm/lib/uaccess_with_memcpy.c
@@ -237,7 +237,7 @@ static int __init test_size_treshold(void)
if (!dst_page)
goto no_dst;
kernel_ptr = page_address(src_page);
- user_ptr = vmap(&dst_page, 1, VM_IOREMAP, __pgprot(__P010));
+ user_ptr = vmap(&dst_page, 1, VM_IOREMAP, __pgprot(__PAGE_COPY));
if (!user_ptr)
goto no_vmap;
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 5e2be37a198e..2722abddd725 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -405,6 +405,26 @@ void __set_fixmap(enum fixed_addresses idx, phys_addr_t
phys, pgprot_t prot)
local_flush_tlb_kernel_range(vaddr, vaddr + PAGE_SIZE);
}
+static pgprot_t protection_map[16] __ro_after_init = {
+ [VM_NONE] = __PAGE_NONE,
+ [VM_READ] = __PAGE_READONLY,
+ [VM_WRITE] = __PAGE_COPY,
+ [VM_WRITE | VM_READ]= __PAGE_COPY,
+ [VM_EXEC] = __PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_READ] = __PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_WRITE]= __PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = __PAGE_COPY_EXEC,
+ [VM_SHARED] = __PAGE_NONE,
+ [VM_SHARED | VM_READ] = __PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = __PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= __PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = __PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_READ] = __PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= __PAGE_SHARED_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = __PAGE_SHARED_EXEC
+};
+DECLARE_VM_GET_PAGE_PROT
+
/*
* Adjust the PMD section entries according to the CPU in use.
*/
--
2.25.1
___
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[PATCH V6 22/26] arc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Vineet Gupta
Cc: linux-snps-arc@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/arc/Kconfig | 1 +
arch/arc/include/asm/pgtable-bits-arcv2.h | 18 --
arch/arc/mm/mmap.c| 20
3 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 9e3653253ef2..8be56a5d8a9b 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -13,6 +13,7 @@ config ARC
select ARCH_HAS_SETUP_DMA_OPS
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC
select ARCH_32BIT_OFF_T
select BUILDTIME_TABLE_SORT
diff --git a/arch/arc/include/asm/pgtable-bits-arcv2.h
b/arch/arc/include/asm/pgtable-bits-arcv2.h
index 183d23bc1e00..b23be557403e 100644
--- a/arch/arc/include/asm/pgtable-bits-arcv2.h
+++ b/arch/arc/include/asm/pgtable-bits-arcv2.h
@@ -72,24 +72,6 @@
* This is to enable COW mechanism
*/
/* xwr */
-#define __P000 PAGE_U_NONE
-#define __P001 PAGE_U_R
-#define __P010 PAGE_U_R /* Pvt-W => !W */
-#define __P011 PAGE_U_R /* Pvt-W => !W */
-#define __P100 PAGE_U_X_R /* X => R */
-#define __P101 PAGE_U_X_R
-#define __P110 PAGE_U_X_R /* Pvt-W => !W and X => R */
-#define __P111 PAGE_U_X_R /* Pvt-W => !W */
-
-#define __S000 PAGE_U_NONE
-#define __S001 PAGE_U_R
-#define __S010 PAGE_U_W_R /* W => R */
-#define __S011 PAGE_U_W_R
-#define __S100 PAGE_U_X_R /* X => R */
-#define __S101 PAGE_U_X_R
-#define __S110 PAGE_U_X_W_R /* X => R */
-#define __S111 PAGE_U_X_W_R
-
#ifndef __ASSEMBLY__
#define pte_write(pte) (pte_val(pte) & _PAGE_WRITE)
diff --git a/arch/arc/mm/mmap.c b/arch/arc/mm/mmap.c
index 722d26b94307..fce5fa2b4f52 100644
--- a/arch/arc/mm/mmap.c
+++ b/arch/arc/mm/mmap.c
@@ -74,3 +74,23 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
info.align_offset = pgoff << PAGE_SHIFT;
return vm_unmapped_area(&info);
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_U_NONE,
+ [VM_READ] = PAGE_U_R,
+ [VM_WRITE] = PAGE_U_R,
+ [VM_WRITE | VM_READ]= PAGE_U_R,
+ [VM_EXEC] = PAGE_U_X_R,
+ [VM_EXEC | VM_READ] = PAGE_U_X_R,
+ [VM_EXEC | VM_WRITE]= PAGE_U_X_R,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_U_X_R,
+ [VM_SHARED] = PAGE_U_NONE,
+ [VM_SHARED | VM_READ] = PAGE_U_R,
+ [VM_SHARED | VM_WRITE] = PAGE_U_W_R,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_U_W_R,
+ [VM_SHARED | VM_EXEC] = PAGE_U_X_R,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_U_X_R,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_U_X_W_R,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_U_X_W_R
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
linux-snps-arc@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V6 21/26] m68k/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Cc: Thomas Bogendoerfer Cc: linux-m...@lists.linux-m68k.org Cc: linux-ker...@vger.kernel.org Signed-off-by: Anshuman Khandual --- arch/m68k/Kconfig| 1 + arch/m68k/include/asm/mcf_pgtable.h | 54 --- arch/m68k/include/asm/motorola_pgtable.h | 22 -- arch/m68k/include/asm/sun3_pgtable.h | 17 arch/m68k/mm/mcfmmu.c| 55 arch/m68k/mm/motorola.c | 20 + arch/m68k/mm/sun3mmu.c | 20 + 7 files changed, 96 insertions(+), 93 deletions(-) diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 936cce42ae9a..49aa0cf13e96 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -7,6 +7,7 @@ config M68K select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA + select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS select ARCH_MIGHT_HAVE_PC_PARPORT if ISA select ARCH_NO_PREEMPT if !COLDFIRE diff --git a/arch/m68k/include/asm/mcf_pgtable.h b/arch/m68k/include/asm/mcf_pgtable.h index 94f38d76e278..0e9c1b28dcab 100644 --- a/arch/m68k/include/asm/mcf_pgtable.h +++ b/arch/m68k/include/asm/mcf_pgtable.h @@ -91,60 +91,6 @@ * for use. In general, the bit positions are xwr, and P-items are * private, the S-items are shared. */ -#define __P000 PAGE_NONE -#define __P001 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE) -#define __P010 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_WRITABLE) -#define __P011 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE \ -| CF_PAGE_WRITABLE) -#define __P100 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_EXEC) -#define __P101 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE \ -| CF_PAGE_EXEC) -#define __P110 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_WRITABLE \ -| CF_PAGE_EXEC) -#define __P111 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE \ -| CF_PAGE_WRITABLE \ -| CF_PAGE_EXEC) - -#define __S000 PAGE_NONE -#define __S001 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE) -#define __S010 PAGE_SHARED -#define __S011 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_SHARED \ -| CF_PAGE_READABLE) -#define __S100 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_EXEC) -#define __S101 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE \ -| CF_PAGE_EXEC) -#define __S110 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_SHARED \ -| CF_PAGE_EXEC) -#define __S111 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_SHARED \ -| CF_PAGE_READABLE \ -| CF_PAGE_EXEC) - #define PTE_MASK PAGE_MASK #define CF_PAGE_CHG_MASK (PTE_MASK | CF_PAGE_ACCESSED | CF_PAGE_DIRTY) diff --git a/arch/m68k/include/asm/motorola_pgtable.h b/arch/m68k/include/asm/motorola_pgtable.h index 7c9b56e2a750..63aaece0722f 100644 --- a/arch/m68k/include/asm/motorola_pgtable.h +++ b/arch/m68k/include/asm/motorola_pgtable.h @@ -83,28 +83,6 @@ extern unsigned long mm_cachebits; #define PAGE_COPY_C__pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED) #define PAGE_READONLY_C__pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED) -/* - * The m6
[PATCH V6 20/26] mips/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Thomas Bogendoerfer
Cc: linux-m...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/mips/Kconfig | 1 +
arch/mips/include/asm/pgtable.h | 22 --
arch/mips/mm/cache.c| 3 +++
3 files changed, 4 insertions(+), 22 deletions(-)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index db09d45d59ec..d0b7eb11ec81 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -14,6 +14,7 @@ config MIPS
select ARCH_HAS_STRNLEN_USER
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAS_UBSAN_SANITIZE_ALL
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_KEEP_MEMBLOCK
select ARCH_SUPPORTS_UPROBES
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
index 374c6322775d..6caec386ad2f 100644
--- a/arch/mips/include/asm/pgtable.h
+++ b/arch/mips/include/asm/pgtable.h
@@ -41,28 +41,6 @@ struct vm_area_struct;
* by reasonable means..
*/
-/*
- * Dummy values to fill the table in mmap.c
- * The real values will be generated at runtime
- */
-#define __P000 __pgprot(0)
-#define __P001 __pgprot(0)
-#define __P010 __pgprot(0)
-#define __P011 __pgprot(0)
-#define __P100 __pgprot(0)
-#define __P101 __pgprot(0)
-#define __P110 __pgprot(0)
-#define __P111 __pgprot(0)
-
-#define __S000 __pgprot(0)
-#define __S001 __pgprot(0)
-#define __S010 __pgprot(0)
-#define __S011 __pgprot(0)
-#define __S100 __pgprot(0)
-#define __S101 __pgprot(0)
-#define __S110 __pgprot(0)
-#define __S111 __pgprot(0)
-
extern unsigned long _page_cachable_default;
extern void __update_cache(unsigned long address, pte_t pte);
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
index 7be7240f7703..11b3e7ddafd5 100644
--- a/arch/mips/mm/cache.c
+++ b/arch/mips/mm/cache.c
@@ -159,6 +159,9 @@ EXPORT_SYMBOL(_page_cachable_default);
#define PM(p) __pgprot(_page_cachable_default | (p))
+static pgprot_t protection_map[16] __ro_after_init;
+DECLARE_VM_GET_PAGE_PROT
+
static inline void setup_protection_map(void)
{
protection_map[0] = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_NO_READ);
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V6 19/26] ia64/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: linux-i...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/ia64/Kconfig | 1 +
arch/ia64/include/asm/pgtable.h | 18 --
arch/ia64/mm/init.c | 28 +++-
3 files changed, 28 insertions(+), 19 deletions(-)
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index cb93769a9f2a..0510a5737711 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -12,6 +12,7 @@ config IA64
select ARCH_HAS_DMA_MARK_CLEAN
select ARCH_HAS_STRNCPY_FROM_USER
select ARCH_HAS_STRNLEN_USER
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
select ACPI
diff --git a/arch/ia64/include/asm/pgtable.h b/arch/ia64/include/asm/pgtable.h
index 7aa8f2330fb1..6925e28ae61d 100644
--- a/arch/ia64/include/asm/pgtable.h
+++ b/arch/ia64/include/asm/pgtable.h
@@ -161,24 +161,6 @@
* attempts to write to the page.
*/
/* xwr */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_READONLY /* write to priv pg -> copy & make writable */
-#define __P011 PAGE_READONLY /* ditto */
-#define __P100 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_X_RX)
-#define __P101 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RX)
-#define __P110 PAGE_COPY_EXEC
-#define __P111 PAGE_COPY_EXEC
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED /* we don't have (and don't need) write-only */
-#define __S011 PAGE_SHARED
-#define __S100 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_X_RX)
-#define __S101 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RX)
-#define __S110 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RWX)
-#define __S111 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RWX)
-
#define pgd_ERROR(e) printk("%s:%d: bad pgd %016lx.\n", __FILE__, __LINE__,
pgd_val(e))
#if CONFIG_PGTABLE_LEVELS == 4
#define pud_ERROR(e) printk("%s:%d: bad pud %016lx.\n", __FILE__, __LINE__,
pud_val(e))
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 855d949d81df..fc4e4217e87f 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -273,7 +273,7 @@ static int __init gate_vma_init(void)
gate_vma.vm_start = FIXADDR_USER_START;
gate_vma.vm_end = FIXADDR_USER_END;
gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
- gate_vma.vm_page_prot = __P101;
+ gate_vma.vm_page_prot = __pgprot(__ACCESS_BITS | _PAGE_PL_3 |
_PAGE_AR_RX);
return 0;
}
@@ -490,3 +490,29 @@ void arch_remove_memory(u64 start, u64 size, struct
vmem_altmap *altmap)
__remove_pages(start_pfn, nr_pages, altmap);
}
#endif
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_READONLY,
+ [VM_WRITE | VM_READ]= PAGE_READONLY,
+ [VM_EXEC] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+
_PAGE_AR_X_RX),
+ [VM_EXEC | VM_READ] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+ _PAGE_AR_RX),
+ [VM_EXEC | VM_WRITE]= PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_EXEC,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+
_PAGE_AR_X_RX),
+ [VM_SHARED | VM_EXEC | VM_READ] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+ _PAGE_AR_RX),
+ [VM_SHARED | VM_EXEC | VM_WRITE]=
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+
_PAGE_AR_RWX),
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+ _PAGE_AR_RWX)
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux
[PATCH V6 18/26] s390/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Heiko Carstens
Cc: Vasily Gorbik
Cc: linux-s...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/s390/Kconfig | 1 +
arch/s390/include/asm/pgtable.h | 17 -
arch/s390/mm/mmap.c | 20
3 files changed, 21 insertions(+), 17 deletions(-)
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 91c0b80a8bf0..c4481377ca83 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -81,6 +81,7 @@ config S390
select ARCH_HAS_SYSCALL_WRAPPER
select ARCH_HAS_UBSAN_SANITIZE_ALL
select ARCH_HAS_VDSO_DATA
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_INLINE_READ_LOCK
select ARCH_INLINE_READ_LOCK_BH
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index a397b072a580..c63a05b5368a 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -424,23 +424,6 @@ static inline int is_module_addr(void *addr)
* implies read permission.
*/
/*xwr*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_RO
-#define __P010 PAGE_RO
-#define __P011 PAGE_RO
-#define __P100 PAGE_RX
-#define __P101 PAGE_RX
-#define __P110 PAGE_RX
-#define __P111 PAGE_RX
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_RO
-#define __S010 PAGE_RW
-#define __S011 PAGE_RW
-#define __S100 PAGE_RX
-#define __S101 PAGE_RX
-#define __S110 PAGE_RWX
-#define __S111 PAGE_RWX
/*
* Segment entry (large page) protection definitions.
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index d545f5c39f7e..5980ce348832 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -188,3 +188,23 @@ void arch_pick_mmap_layout(struct mm_struct *mm, struct
rlimit *rlim_stack)
mm->get_unmapped_area = arch_get_unmapped_area_topdown;
}
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_RO,
+ [VM_WRITE] = PAGE_RO,
+ [VM_WRITE | VM_READ]= PAGE_RO,
+ [VM_EXEC] = PAGE_RX,
+ [VM_EXEC | VM_READ] = PAGE_RX,
+ [VM_EXEC | VM_WRITE]= PAGE_RX,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_RX,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_RO,
+ [VM_SHARED | VM_WRITE] = PAGE_RW,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_RW,
+ [VM_SHARED | VM_EXEC] = PAGE_RX,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_RX,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_RWX,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_RWX
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V6 17/26] csky/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Geert Uytterhoeven
Cc: linux-c...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Acked-by: Guo Ren
Signed-off-by: Anshuman Khandual
---
arch/csky/Kconfig | 1 +
arch/csky/include/asm/pgtable.h | 18 --
arch/csky/mm/init.c | 20
3 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig
index 21d72b078eef..588b8a9c68ed 100644
--- a/arch/csky/Kconfig
+++ b/arch/csky/Kconfig
@@ -6,6 +6,7 @@ config CSKY
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_QUEUED_RWLOCKS
select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 &&
$(cc-option,-mbacktrace)
diff --git a/arch/csky/include/asm/pgtable.h b/arch/csky/include/asm/pgtable.h
index bbe24511..229a5f4ad7fc 100644
--- a/arch/csky/include/asm/pgtable.h
+++ b/arch/csky/include/asm/pgtable.h
@@ -77,24 +77,6 @@
#define MAX_SWAPFILES_CHECK() \
BUILD_BUG_ON(MAX_SWAPFILES_SHIFT != 5)
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READ
-#define __P010 PAGE_READ
-#define __P011 PAGE_READ
-#define __P100 PAGE_READ
-#define __P101 PAGE_READ
-#define __P110 PAGE_READ
-#define __P111 PAGE_READ
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READ
-#define __S010 PAGE_WRITE
-#define __S011 PAGE_WRITE
-#define __S100 PAGE_READ
-#define __S101 PAGE_READ
-#define __S110 PAGE_WRITE
-#define __S111 PAGE_WRITE
-
extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)];
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
diff --git a/arch/csky/mm/init.c b/arch/csky/mm/init.c
index bf2004aa811a..bde7cabd23df 100644
--- a/arch/csky/mm/init.c
+++ b/arch/csky/mm/init.c
@@ -197,3 +197,23 @@ void __init fixaddr_init(void)
vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
fixrange_init(vaddr, vaddr + PMD_SIZE, swapper_pg_dir);
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READ,
+ [VM_WRITE] = PAGE_READ,
+ [VM_WRITE | VM_READ]= PAGE_READ,
+ [VM_EXEC] = PAGE_READ,
+ [VM_EXEC | VM_READ] = PAGE_READ,
+ [VM_EXEC | VM_WRITE]= PAGE_READ,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_READ,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READ,
+ [VM_SHARED | VM_WRITE] = PAGE_WRITE,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_WRITE,
+ [VM_SHARED | VM_EXEC] = PAGE_READ,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READ,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_WRITE,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_WRITE
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V6 16/26] riscv/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Paul Walmsley
Cc: Palmer Dabbelt
Cc: linux-ri...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/riscv/Kconfig | 1 +
arch/riscv/include/asm/pgtable.h | 20
arch/riscv/mm/init.c | 20
3 files changed, 21 insertions(+), 20 deletions(-)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 32ffef9f6e5b..583389d4e43a 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -32,6 +32,7 @@ config RISCV
select ARCH_HAS_STRICT_MODULE_RWX if MMU && !XIP_KERNEL
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAS_UBSAN_SANITIZE_ALL
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT
select ARCH_STACKWALK
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 1d1be9d9419c..23e643db6575 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -186,26 +186,6 @@ extern struct pt_alloc_ops pt_ops __initdata;
extern pgd_t swapper_pg_dir[];
-/* MAP_PRIVATE permissions: xwr (copy-on-write) */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READ
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_EXEC
-#define __P101 PAGE_READ_EXEC
-#define __P110 PAGE_COPY_EXEC
-#define __P111 PAGE_COPY_READ_EXEC
-
-/* MAP_SHARED permissions: xwr */
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READ
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_EXEC
-#define __S101 PAGE_READ_EXEC
-#define __S110 PAGE_SHARED_EXEC
-#define __S111 PAGE_SHARED_EXEC
-
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
static inline int pmd_present(pmd_t pmd)
{
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index d466ec670e1f..a88b7dc31a68 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -288,6 +288,26 @@ static pmd_t __maybe_unused early_dtb_pmd[PTRS_PER_PMD]
__initdata __aligned(PAG
#define early_pg_dir ((pgd_t *)XIP_FIXUP(early_pg_dir))
#endif /* CONFIG_XIP_KERNEL */
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READ,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_EXEC,
+ [VM_EXEC | VM_READ] = PAGE_READ_EXEC,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_READ_EXEC,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READ,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_EXEC,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READ_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_EXEC
+};
+DECLARE_VM_GET_PAGE_PROT
+
void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot)
{
unsigned long addr = __fix_to_virt(idx);
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V6 15/26] nios2/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Dinh Nguyen
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/nios2/Kconfig | 1 +
arch/nios2/include/asm/pgtable.h | 16
arch/nios2/mm/init.c | 20
3 files changed, 21 insertions(+), 16 deletions(-)
diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index 4167f1eb4cd8..e0459dffd218 100644
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -6,6 +6,7 @@ config NIOS2
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
select ARCH_HAS_DMA_SET_UNCACHED
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_NO_SWAP
select COMMON_CLK
select TIMER_OF
diff --git a/arch/nios2/include/asm/pgtable.h b/arch/nios2/include/asm/pgtable.h
index 262d0609268c..470516d4555e 100644
--- a/arch/nios2/include/asm/pgtable.h
+++ b/arch/nios2/include/asm/pgtable.h
@@ -40,24 +40,8 @@ struct mm_struct;
*/
/* Remove W bit on private pages for COW support */
-#define __P000 MKP(0, 0, 0)
-#define __P001 MKP(0, 0, 1)
-#define __P010 MKP(0, 0, 0)/* COW */
-#define __P011 MKP(0, 0, 1)/* COW */
-#define __P100 MKP(1, 0, 0)
-#define __P101 MKP(1, 0, 1)
-#define __P110 MKP(1, 0, 0)/* COW */
-#define __P111 MKP(1, 0, 1)/* COW */
/* Shared pages can have exact HW mapping */
-#define __S000 MKP(0, 0, 0)
-#define __S001 MKP(0, 0, 1)
-#define __S010 MKP(0, 1, 0)
-#define __S011 MKP(0, 1, 1)
-#define __S100 MKP(1, 0, 0)
-#define __S101 MKP(1, 0, 1)
-#define __S110 MKP(1, 1, 0)
-#define __S111 MKP(1, 1, 1)
/* Used all over the kernel */
#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | _PAGE_CACHED | _PAGE_READ | \
diff --git a/arch/nios2/mm/init.c b/arch/nios2/mm/init.c
index 613fcaa5988a..ae24687d12ad 100644
--- a/arch/nios2/mm/init.c
+++ b/arch/nios2/mm/init.c
@@ -124,3 +124,23 @@ const char *arch_vma_name(struct vm_area_struct *vma)
{
return (vma->vm_start == KUSER_BASE) ? "[kuser]" : NULL;
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = MKP(0, 0, 0),
+ [VM_READ] = MKP(0, 0, 1),
+ [VM_WRITE] = MKP(0, 0, 0),
+ [VM_WRITE | VM_READ]= MKP(0, 0, 1),
+ [VM_EXEC] = MKP(1, 0, 0),
+ [VM_EXEC | VM_READ] = MKP(1, 0, 1),
+ [VM_EXEC | VM_WRITE]= MKP(1, 0, 0),
+ [VM_EXEC | VM_WRITE | VM_READ] = MKP(1, 0, 1),
+ [VM_SHARED] = MKP(0, 0, 0),
+ [VM_SHARED | VM_READ] = MKP(0, 0, 1),
+ [VM_SHARED | VM_WRITE] = MKP(0, 1, 0),
+ [VM_SHARED | VM_WRITE | VM_READ]= MKP(0, 1, 1),
+ [VM_SHARED | VM_EXEC] = MKP(1, 0, 0),
+ [VM_SHARED | VM_EXEC | VM_READ] = MKP(1, 0, 1),
+ [VM_SHARED | VM_EXEC | VM_WRITE]= MKP(1, 1, 0),
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = MKP(1, 1, 1)
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V6 14/26] alpha/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Richard Henderson
Cc: linux-al...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/alpha/Kconfig | 1 +
arch/alpha/include/asm/pgtable.h | 17 -
arch/alpha/mm/init.c | 22 ++
3 files changed, 23 insertions(+), 17 deletions(-)
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 7d0d26b5b3f5..db1c8b329461 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -2,6 +2,7 @@
config ALPHA
bool
default y
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_32BIT_USTAT_F_TINODE
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
diff --git a/arch/alpha/include/asm/pgtable.h b/arch/alpha/include/asm/pgtable.h
index 170451fde043..3ea9661c09ff 100644
--- a/arch/alpha/include/asm/pgtable.h
+++ b/arch/alpha/include/asm/pgtable.h
@@ -116,23 +116,6 @@ struct vm_area_struct;
* arch/alpha/mm/fault.c)
*/
/* xwr */
-#define __P000 _PAGE_P(_PAGE_FOE | _PAGE_FOW | _PAGE_FOR)
-#define __P001 _PAGE_P(_PAGE_FOE | _PAGE_FOW)
-#define __P010 _PAGE_P(_PAGE_FOE)
-#define __P011 _PAGE_P(_PAGE_FOE)
-#define __P100 _PAGE_P(_PAGE_FOW | _PAGE_FOR)
-#define __P101 _PAGE_P(_PAGE_FOW)
-#define __P110 _PAGE_P(0)
-#define __P111 _PAGE_P(0)
-
-#define __S000 _PAGE_S(_PAGE_FOE | _PAGE_FOW | _PAGE_FOR)
-#define __S001 _PAGE_S(_PAGE_FOE | _PAGE_FOW)
-#define __S010 _PAGE_S(_PAGE_FOE)
-#define __S011 _PAGE_S(_PAGE_FOE)
-#define __S100 _PAGE_S(_PAGE_FOW | _PAGE_FOR)
-#define __S101 _PAGE_S(_PAGE_FOW)
-#define __S110 _PAGE_S(0)
-#define __S111 _PAGE_S(0)
/*
* pgprot_noncached() is only for infiniband pci support, and a real
diff --git a/arch/alpha/mm/init.c b/arch/alpha/mm/init.c
index 7511723b7669..a155180d7a83 100644
--- a/arch/alpha/mm/init.c
+++ b/arch/alpha/mm/init.c
@@ -280,3 +280,25 @@ mem_init(void)
high_memory = (void *) __va(max_low_pfn * PAGE_SIZE);
memblock_free_all();
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = _PAGE_P(_PAGE_FOE |
_PAGE_FOW |
+ _PAGE_FOR),
+ [VM_READ] = _PAGE_P(_PAGE_FOE |
_PAGE_FOW),
+ [VM_WRITE] = _PAGE_P(_PAGE_FOE),
+ [VM_WRITE | VM_READ]= _PAGE_P(_PAGE_FOE),
+ [VM_EXEC] = _PAGE_P(_PAGE_FOW |
_PAGE_FOR),
+ [VM_EXEC | VM_READ] = _PAGE_P(_PAGE_FOW),
+ [VM_EXEC | VM_WRITE]= _PAGE_P(0),
+ [VM_EXEC | VM_WRITE | VM_READ] = _PAGE_P(0),
+ [VM_SHARED] = _PAGE_S(_PAGE_FOE |
_PAGE_FOW |
+ _PAGE_FOR),
+ [VM_SHARED | VM_READ] = _PAGE_S(_PAGE_FOE |
_PAGE_FOW),
+ [VM_SHARED | VM_WRITE] = _PAGE_S(_PAGE_FOE),
+ [VM_SHARED | VM_WRITE | VM_READ]= _PAGE_S(_PAGE_FOE),
+ [VM_SHARED | VM_EXEC] = _PAGE_S(_PAGE_FOW |
_PAGE_FOR),
+ [VM_SHARED | VM_EXEC | VM_READ] = _PAGE_S(_PAGE_FOW),
+ [VM_SHARED | VM_EXEC | VM_WRITE]= _PAGE_S(0),
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = _PAGE_S(0)
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V6 13/26] parisc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: "James E.J. Bottomley"
Cc: linux-par...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/parisc/Kconfig | 1 +
arch/parisc/include/asm/pgtable.h | 18 --
arch/parisc/mm/init.c | 20
3 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index fa400055b2d5..891d82393957 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -12,6 +12,7 @@ config PARISC
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_STRICT_MODULE_RWX
select ARCH_HAS_UBSAN_SANITIZE_ALL
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAS_PTE_SPECIAL
select ARCH_NO_SG_CHAIN
select ARCH_SUPPORTS_HUGETLBFS if PA20
diff --git a/arch/parisc/include/asm/pgtable.h
b/arch/parisc/include/asm/pgtable.h
index 69765a6dbe89..6a1899a9b420 100644
--- a/arch/parisc/include/asm/pgtable.h
+++ b/arch/parisc/include/asm/pgtable.h
@@ -271,24 +271,6 @@ extern void __update_cache(pte_t pte);
*/
/*xwr*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 __P000 /* copy on write */
-#define __P011 __P001 /* copy on write */
-#define __P100 PAGE_EXECREAD
-#define __P101 PAGE_EXECREAD
-#define __P110 __P100 /* copy on write */
-#define __P111 __P101 /* copy on write */
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_WRITEONLY
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_EXECREAD
-#define __S101 PAGE_EXECREAD
-#define __S110 PAGE_RWX
-#define __S111 PAGE_RWX
-
extern pgd_t swapper_pg_dir[]; /* declared in init_task.c */
diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index 0a81499dd35e..f03e0961fa25 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -871,3 +871,23 @@ void flush_tlb_all(void)
spin_unlock(&sid_lock);
}
#endif
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_NONE,
+ [VM_WRITE | VM_READ]= PAGE_READONLY,
+ [VM_EXEC] = PAGE_EXECREAD,
+ [VM_EXEC | VM_READ] = PAGE_EXECREAD,
+ [VM_EXEC | VM_WRITE]= PAGE_EXECREAD,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_EXECREAD,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_WRITEONLY,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_EXECREAD,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_EXECREAD,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_RWX,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_RWX
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
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[PATCH V6 12/26] hexagon/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Brian Cain
Cc: linux-hexa...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Acked-by: Brian Cain
Signed-off-by: Anshuman Khandual
---
arch/hexagon/Kconfig | 1 +
arch/hexagon/include/asm/pgtable.h | 27 ---
arch/hexagon/mm/init.c | 42 ++
3 files changed, 43 insertions(+), 27 deletions(-)
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index 54eadf265178..bc4ceecd0588 100644
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -6,6 +6,7 @@ config HEXAGON
def_bool y
select ARCH_32BIT_OFF_T
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_NO_PREEMPT
select DMA_GLOBAL_POOL
# Other pending projects/to-do items.
diff --git a/arch/hexagon/include/asm/pgtable.h
b/arch/hexagon/include/asm/pgtable.h
index 0610724d6a28..f7048c18b6f9 100644
--- a/arch/hexagon/include/asm/pgtable.h
+++ b/arch/hexagon/include/asm/pgtable.h
@@ -126,33 +126,6 @@ extern unsigned long _dflt_cache_att;
*/
#define CACHEDEF (CACHE_DEFAULT << 6)
-/* Private (copy-on-write) page protections. */
-#define __P000 __pgprot(_PAGE_PRESENT | _PAGE_USER | CACHEDEF)
-#define __P001 __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | CACHEDEF)
-#define __P010 __P000 /* Write-only copy-on-write */
-#define __P011 __P001 /* Read/Write copy-on-write */
-#define __P100 __pgprot(_PAGE_PRESENT | _PAGE_USER | \
- _PAGE_EXECUTE | CACHEDEF)
-#define __P101 __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_EXECUTE | \
- _PAGE_READ | CACHEDEF)
-#define __P110 __P100 /* Write/execute copy-on-write */
-#define __P111 __P101 /* Read/Write/Execute, copy-on-write */
-
-/* Shared page protections. */
-#define __S000 __P000
-#define __S001 __P001
-#define __S010 __pgprot(_PAGE_PRESENT | _PAGE_USER | \
- _PAGE_WRITE | CACHEDEF)
-#define __S011 __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | \
- _PAGE_WRITE | CACHEDEF)
-#define __S100 __pgprot(_PAGE_PRESENT | _PAGE_USER | \
- _PAGE_EXECUTE | CACHEDEF)
-#define __S101 __P101
-#define __S110 __pgprot(_PAGE_PRESENT | _PAGE_USER | \
- _PAGE_EXECUTE | _PAGE_WRITE | CACHEDEF)
-#define __S111 __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | \
- _PAGE_EXECUTE | _PAGE_WRITE | CACHEDEF)
-
extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; /* located in head.S */
/* HUGETLB not working currently */
diff --git a/arch/hexagon/mm/init.c b/arch/hexagon/mm/init.c
index 3167a3b5c97b..146115c9de61 100644
--- a/arch/hexagon/mm/init.c
+++ b/arch/hexagon/mm/init.c
@@ -234,3 +234,45 @@ void __init setup_arch_memory(void)
* which is called by start_kernel() later on in the process
*/
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+ CACHEDEF),
+ [VM_READ] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+ _PAGE_READ |
CACHEDEF),
+ [VM_WRITE] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+ CACHEDEF),
+ [VM_WRITE | VM_READ]=
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+ _PAGE_READ |
CACHEDEF),
+ [VM_EXEC] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+
_PAGE_EXECUTE | CACHEDEF),
+ [VM_EXEC | VM_READ] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+
_PAGE_EXECUTE | _PAGE_READ |
+ CACHEDEF),
+ [VM_EXEC | VM_WRITE]=
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+
_PAGE_EXECUTE | CACHEDEF),
+ [VM_EXEC | VM_WRITE | VM_READ] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+
_PAGE_EXECUTE | _PAGE_READ |
+ CACHEDEF),
+ [VM_SHARED] =
__pgprot(_PAGE_PRESENT | _PAG
[PATCH V6 11/26] xtensa/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Chris Zankel
Cc: Guo Ren
Cc: linux-xte...@linux-xtensa.org
Cc: linux-c...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/xtensa/Kconfig | 1 +
arch/xtensa/include/asm/pgtable.h | 18 --
arch/xtensa/mm/init.c | 20
3 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 0b0f0172cced..4c0d83520ff1 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -11,6 +11,7 @@ config XTENSA
select ARCH_HAS_DMA_SET_UNCACHED if MMU
select ARCH_HAS_STRNCPY_FROM_USER if !KASAN
select ARCH_HAS_STRNLEN_USER
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_USE_MEMTEST
select ARCH_USE_QUEUED_RWLOCKS
select ARCH_USE_QUEUED_SPINLOCKS
diff --git a/arch/xtensa/include/asm/pgtable.h
b/arch/xtensa/include/asm/pgtable.h
index 0a91376131c5..e0d5531ae00d 100644
--- a/arch/xtensa/include/asm/pgtable.h
+++ b/arch/xtensa/include/asm/pgtable.h
@@ -200,24 +200,6 @@
* What follows is the closest we can get by reasonable means..
* See linux/mm/mmap.c for protection_map[] array that uses these definitions.
*/
-#define __P000 PAGE_NONE /* private --- */
-#define __P001 PAGE_READONLY /* private --r */
-#define __P010 PAGE_COPY /* private -w- */
-#define __P011 PAGE_COPY /* private -wr */
-#define __P100 PAGE_READONLY_EXEC /* private x-- */
-#define __P101 PAGE_READONLY_EXEC /* private x-r */
-#define __P110 PAGE_COPY_EXEC /* private xw- */
-#define __P111 PAGE_COPY_EXEC /* private xwr */
-
-#define __S000 PAGE_NONE /* shared --- */
-#define __S001 PAGE_READONLY /* shared --r */
-#define __S010 PAGE_SHARED /* shared -w- */
-#define __S011 PAGE_SHARED /* shared -wr */
-#define __S100 PAGE_READONLY_EXEC /* shared x-- */
-#define __S101 PAGE_READONLY_EXEC /* shared x-r */
-#define __S110 PAGE_SHARED_EXEC/* shared xw- */
-#define __S111 PAGE_SHARED_EXEC/* shared xwr */
-
#ifndef __ASSEMBLY__
#define pte_ERROR(e) \
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c
index 6a32b2cf2718..fb830ec8183c 100644
--- a/arch/xtensa/mm/init.c
+++ b/arch/xtensa/mm/init.c
@@ -216,3 +216,23 @@ static int __init parse_memmap_opt(char *str)
return 0;
}
early_param("memmap", parse_memmap_opt);
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_EXEC,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_EXEC
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V6 10/26] openrisc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Jonas Bonn
Cc: openr...@lists.librecores.org
Cc: linux-ker...@vger.kernel.org
Acked-by: Stafford Horne
Signed-off-by: Anshuman Khandual
---
arch/openrisc/Kconfig | 1 +
arch/openrisc/include/asm/pgtable.h | 18 --
arch/openrisc/mm/init.c | 20
3 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
index e814df4c483c..fe0dfb50eb86 100644
--- a/arch/openrisc/Kconfig
+++ b/arch/openrisc/Kconfig
@@ -10,6 +10,7 @@ config OPENRISC
select ARCH_HAS_DMA_SET_UNCACHED
select ARCH_HAS_DMA_CLEAR_UNCACHED
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_VM_GET_PAGE_PROT
select COMMON_CLK
select OF
select OF_EARLY_FLATTREE
diff --git a/arch/openrisc/include/asm/pgtable.h
b/arch/openrisc/include/asm/pgtable.h
index c3abbf71e09f..dcae8aea132f 100644
--- a/arch/openrisc/include/asm/pgtable.h
+++ b/arch/openrisc/include/asm/pgtable.h
@@ -176,24 +176,6 @@ extern void paging_init(void);
__pgprot(_PAGE_ALL | _PAGE_SRE | _PAGE_SWE \
| _PAGE_SHARED | _PAGE_DIRTY | _PAGE_EXEC | _PAGE_CI)
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY_X
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY_X
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY_X
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY_X
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY_X
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED_X
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY_X
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED_X
-
/* zero page used for uninitialized stuff */
extern unsigned long empty_zero_page[2048];
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c
index 3a021ab6f1ae..d531ab82be12 100644
--- a/arch/openrisc/mm/init.c
+++ b/arch/openrisc/mm/init.c
@@ -208,3 +208,23 @@ void __init mem_init(void)
mem_init_done = 1;
return;
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY_X,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY_X,
+ [VM_EXEC] = PAGE_READONLY,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_X,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY_X,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED_X,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_X
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V6 09/26] loongarch/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Huacai Chen
Cc: WANG Xuerui
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/loongarch/Kconfig| 1 +
arch/loongarch/include/asm/pgtable-bits.h | 19 --
arch/loongarch/mm/cache.c | 46 +++
3 files changed, 47 insertions(+), 19 deletions(-)
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index 1920d52653b4..fd07b8e760ee 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -9,6 +9,7 @@ config LOONGARCH
select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI
select ARCH_HAS_PHYS_TO_DMA
select ARCH_HAS_PTE_SPECIAL
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_INLINE_READ_LOCK if !PREEMPTION
select ARCH_INLINE_READ_LOCK_BH if !PREEMPTION
diff --git a/arch/loongarch/include/asm/pgtable-bits.h
b/arch/loongarch/include/asm/pgtable-bits.h
index 3badd112d9ab..9ca147a29bab 100644
--- a/arch/loongarch/include/asm/pgtable-bits.h
+++ b/arch/loongarch/include/asm/pgtable-bits.h
@@ -83,25 +83,6 @@
_PAGE_GLOBAL | _PAGE_KERN | _CACHE_SUC)
#define PAGE_KERNEL_WUC __pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE | \
_PAGE_GLOBAL | _PAGE_KERN | _CACHE_WUC)
-
-#define __P000 __pgprot(_CACHE_CC | _PAGE_USER | _PAGE_PROTNONE |
_PAGE_NO_EXEC | _PAGE_NO_READ)
-#define __P001 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC)
-#define __P010 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC)
-#define __P011 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC)
-#define __P100 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-#define __P101 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-#define __P110 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-#define __P111 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-
-#define __S000 __pgprot(_CACHE_CC | _PAGE_USER | _PAGE_PROTNONE |
_PAGE_NO_EXEC | _PAGE_NO_READ)
-#define __S001 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC)
-#define __S010 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC | _PAGE_WRITE)
-#define __S011 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC | _PAGE_WRITE)
-#define __S100 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-#define __S101 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-#define __S110 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_WRITE)
-#define __S111 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_WRITE)
-
#ifndef __ASSEMBLY__
#define pgprot_noncached pgprot_noncached
diff --git a/arch/loongarch/mm/cache.c b/arch/loongarch/mm/cache.c
index 9e5ce5aa73f7..e8c68dcf6ab2 100644
--- a/arch/loongarch/mm/cache.c
+++ b/arch/loongarch/mm/cache.c
@@ -139,3 +139,49 @@ void cpu_cache_init(void)
shm_align_mask = PAGE_SIZE - 1;
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = __pgprot(_CACHE_CC |
_PAGE_USER |
+
_PAGE_PROTNONE | _PAGE_NO_EXEC |
+
_PAGE_NO_READ),
+ [VM_READ] = __pgprot(_CACHE_CC |
_PAGE_VALID |
+ _PAGE_USER |
_PAGE_PRESENT |
+
_PAGE_NO_EXEC),
+ [VM_WRITE] = __pgprot(_CACHE_CC |
_PAGE_VALID |
+ _PAGE_USER |
_PAGE_PRESENT |
+
_PAGE_NO_EXEC),
+ [VM_WRITE | VM_READ]= __pgprot(_CACHE_CC |
_PAGE_VALID |
+ _PAGE_USER |
_PAGE_PRESENT |
+
_PAGE_NO_EXEC),
+ [VM_EXEC] = __pgprot(_CACHE_CC |
_PAGE_VALID |
+ _PAGE_USER |
_PAGE_PRESENT),
+ [VM_EXEC | VM_READ] = __pgprot(_CACHE_CC |
_PAGE_VALID |
+ _PAGE_USER |
_PAGE_PRESENT),
+ [VM_EXEC
[PATCH V6 08/26] microblaze/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Michal Simek
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/microblaze/Kconfig | 1 +
arch/microblaze/include/asm/pgtable.h | 17 -
arch/microblaze/mm/init.c | 20
3 files changed, 21 insertions(+), 17 deletions(-)
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 8cf429ad1c84..15f91ba8a0c4 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -7,6 +7,7 @@ config MICROBLAZE
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_WANT_IPC_PARSE_VERSION
select BUILDTIME_TABLE_SORT
diff --git a/arch/microblaze/include/asm/pgtable.h
b/arch/microblaze/include/asm/pgtable.h
index 0c72646370e1..ba348e997dbb 100644
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -204,23 +204,6 @@ extern pte_t *va_to_pte(unsigned long address);
* We consider execute permission the same as read.
* Also, write permissions imply read permissions.
*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY_X
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY_X
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY_X
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY_X
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY_X
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED_X
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY_X
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED_X
#ifndef __ASSEMBLY__
/*
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index f4e503461d24..353fabdfcbc5 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -285,3 +285,23 @@ void * __ref zalloc_maybe_bootmem(size_t size, gfp_t mask)
return p;
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY_X,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY_X,
+ [VM_EXEC] = PAGE_READONLY,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_X,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY_X,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED_X,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_X
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
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[PATCH V6 07/26] mm/mmap: Build protect protection_map[] with ARCH_HAS_VM_GET_PAGE_PROT
Now that protection_map[] has been moved inside those platforms that enable
ARCH_HAS_VM_GET_PAGE_PROT. Hence generic protection_map[] array now can be
protected with CONFIG_ARCH_HAS_VM_GET_PAGE_PROT intead of __P000.
Cc: Andrew Morton
Cc: linux...@kvack.org
Cc: linux-ker...@vger.kernel.org
Reviewed-by: Christophe Leroy
Signed-off-by: Anshuman Khandual
---
include/linux/mm.h | 2 +-
mm/mmap.c | 5 +
2 files changed, 2 insertions(+), 5 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 0ff0a1bad091..07b56995e0fe 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -424,7 +424,7 @@ extern unsigned int kobjsize(const void *objp);
* mapping from the currently active vm_flags protection bits (the
* low four bits) to a page protection mask..
*/
-#ifdef __P000
+#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
extern pgprot_t protection_map[16];
#endif
diff --git a/mm/mmap.c b/mm/mmap.c
index b46d5e931bb3..2cc722e162fa 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -81,7 +81,7 @@ static void unmap_region(struct mm_struct *mm,
struct vm_area_struct *vma, struct vm_area_struct *prev,
unsigned long start, unsigned long end);
-#ifdef __P000
+#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
pgprot_t protection_map[16] __ro_after_init = {
[VM_NONE] = __P000,
[VM_READ] = __P001,
@@ -100,9 +100,6 @@ pgprot_t protection_map[16] __ro_after_init = {
[VM_SHARED | VM_EXEC | VM_WRITE]= __S110,
[VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = __S111
};
-#endif
-
-#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
DECLARE_VM_GET_PAGE_PROT
#endif /* CONFIG_ARCH_HAS_VM_GET_PAGE_PROT */
--
2.25.1
___
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[PATCH V6 06/26] x86/mm: Move protection_map[] inside the platform
This moves protection_map[] inside the platform and makes it a static. This
also defines a helper function add_encrypt_protection_map() that can update
the protection_map[] array with pgprot_encrypted().
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: x...@kernel.org
Cc: linux-ker...@vger.kernel.org
Reviewed-by: Christoph Hellwig
Signed-off-by: Anshuman Khandual
---
arch/x86/include/asm/pgtable_types.h | 19 ---
arch/x86/mm/mem_encrypt_amd.c| 7 +++
arch/x86/mm/pgprot.c | 27 +++
3 files changed, 30 insertions(+), 23 deletions(-)
diff --git a/arch/x86/include/asm/pgtable_types.h
b/arch/x86/include/asm/pgtable_types.h
index bdaf8391e2e0..aa174fed3a71 100644
--- a/arch/x86/include/asm/pgtable_types.h
+++ b/arch/x86/include/asm/pgtable_types.h
@@ -230,25 +230,6 @@ enum page_cache_mode {
#endif /* __ASSEMBLY__ */
-/* xwr */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY_EXEC
-#define __P101 PAGE_READONLY_EXEC
-#define __P110 PAGE_COPY_EXEC
-#define __P111 PAGE_COPY_EXEC
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY_EXEC
-#define __S101 PAGE_READONLY_EXEC
-#define __S110 PAGE_SHARED_EXEC
-#define __S111 PAGE_SHARED_EXEC
-
/*
* early identity mapping pte attrib macros.
*/
diff --git a/arch/x86/mm/mem_encrypt_amd.c b/arch/x86/mm/mem_encrypt_amd.c
index f6d038e2cd8e..4b3ec87e8c7d 100644
--- a/arch/x86/mm/mem_encrypt_amd.c
+++ b/arch/x86/mm/mem_encrypt_amd.c
@@ -484,10 +484,10 @@ void __init early_set_mem_enc_dec_hypercall(unsigned long
vaddr, int npages, boo
enc_dec_hypercall(vaddr, npages, enc);
}
+void add_encrypt_protection_map(void);
+
void __init sme_early_init(void)
{
- unsigned int i;
-
if (!sme_me_mask)
return;
@@ -496,8 +496,7 @@ void __init sme_early_init(void)
__supported_pte_mask = __sme_set(__supported_pte_mask);
/* Update the protection map with memory encryption mask */
- for (i = 0; i < ARRAY_SIZE(protection_map); i++)
- protection_map[i] = pgprot_encrypted(protection_map[i]);
+ add_encrypt_protection_map();
x86_platform.guest.enc_status_change_prepare =
amd_enc_status_change_prepare;
x86_platform.guest.enc_status_change_finish =
amd_enc_status_change_finish;
diff --git a/arch/x86/mm/pgprot.c b/arch/x86/mm/pgprot.c
index 763742782286..b867839b16aa 100644
--- a/arch/x86/mm/pgprot.c
+++ b/arch/x86/mm/pgprot.c
@@ -4,6 +4,33 @@
#include
#include
+static pgprot_t protection_map[16] __ro_after_init = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_EXEC,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_EXEC
+};
+
+void add_encrypt_protection_map(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(protection_map); i++)
+ protection_map[i] = pgprot_encrypted(protection_map[i]);
+}
+
pgprot_t vm_get_page_prot(unsigned long vm_flags)
{
unsigned long val = pgprot_val(protection_map[vm_flags &
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V6 05/26] arm64/mm: Move protection_map[] inside the platform
This moves protection_map[] inside the platform and makes it a static.
Cc: Catalin Marinas
Cc: Will Deacon
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Reviewed-by: Catalin Marinas
Signed-off-by: Anshuman Khandual
---
arch/arm64/include/asm/pgtable-prot.h | 18 --
arch/arm64/mm/mmap.c | 21 +
2 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/arm64/include/asm/pgtable-prot.h
b/arch/arm64/include/asm/pgtable-prot.h
index 62e0ebeed720..9b165117a454 100644
--- a/arch/arm64/include/asm/pgtable-prot.h
+++ b/arch/arm64/include/asm/pgtable-prot.h
@@ -89,24 +89,6 @@ extern bool arm64_use_ng_mappings;
#define PAGE_READONLY_EXEC __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_RDONLY
| PTE_NG | PTE_PXN)
#define PAGE_EXECONLY __pgprot(_PAGE_DEFAULT | PTE_RDONLY | PTE_NG |
PTE_PXN)
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_READONLY
-#define __P011 PAGE_READONLY
-#define __P100 PAGE_READONLY_EXEC /* PAGE_EXECONLY if Enhanced PAN */
-#define __P101 PAGE_READONLY_EXEC
-#define __P110 PAGE_READONLY_EXEC
-#define __P111 PAGE_READONLY_EXEC
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY_EXEC /* PAGE_EXECONLY if Enhanced PAN */
-#define __S101 PAGE_READONLY_EXEC
-#define __S110 PAGE_SHARED_EXEC
-#define __S111 PAGE_SHARED_EXEC
-
#endif /* __ASSEMBLY__ */
#endif /* __ASM_PGTABLE_PROT_H */
diff --git a/arch/arm64/mm/mmap.c b/arch/arm64/mm/mmap.c
index 78e9490f748d..8f5b7ce857ed 100644
--- a/arch/arm64/mm/mmap.c
+++ b/arch/arm64/mm/mmap.c
@@ -13,6 +13,27 @@
#include
#include
+static pgprot_t protection_map[16] __ro_after_init = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_READONLY,
+ [VM_WRITE | VM_READ]= PAGE_READONLY,
+ /* PAGE_EXECONLY if Enhanced PAN */
+ [VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_WRITE]= PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ /* PAGE_EXECONLY if Enhanced PAN */
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_EXEC
+};
+
/*
* You really shouldn't be using read() or write() on /dev/mem. This might go
* away in the future.
--
2.25.1
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[PATCH V6 04/26] sparc/mm: Move protection_map[] inside the platform
This moves protection_map[] inside the platform and while here, also enable
ARCH_HAS_VM_GET_PAGE_PROT on 32 bit platforms via DECLARE_VM_GET_PAGE_PROT.
Cc: "David S. Miller"
Cc: sparcli...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Reviewed-by: Sam Ravnborg
Signed-off-by: Anshuman Khandual
---
arch/sparc/Kconfig | 2 +-
arch/sparc/include/asm/pgtable_32.h | 19 ---
arch/sparc/include/asm/pgtable_64.h | 19 ---
arch/sparc/mm/init_32.c | 20
arch/sparc/mm/init_64.c | 3 +++
5 files changed, 24 insertions(+), 39 deletions(-)
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index ba449c47effd..09f868613a4d 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -13,6 +13,7 @@ config 64BIT
config SPARC
bool
default y
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
select ARCH_MIGHT_HAVE_PC_SERIO
select DMA_OPS
@@ -84,7 +85,6 @@ config SPARC64
select PERF_USE_VMALLOC
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select HAVE_C_RECORDMCOUNT
- select ARCH_HAS_VM_GET_PAGE_PROT
select HAVE_ARCH_AUDITSYSCALL
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_SUPPORTS_DEBUG_PAGEALLOC
diff --git a/arch/sparc/include/asm/pgtable_32.h
b/arch/sparc/include/asm/pgtable_32.h
index 4866625da314..8ff549004fac 100644
--- a/arch/sparc/include/asm/pgtable_32.h
+++ b/arch/sparc/include/asm/pgtable_32.h
@@ -64,25 +64,6 @@ void paging_init(void);
extern unsigned long ptr_in_current_pgd;
-/* xwr */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED
-
/* First physical page can be anywhere, the following is needed so that
* va-->pa and vice versa conversions work properly without performance
* hit for all __pa()/__va() operations.
diff --git a/arch/sparc/include/asm/pgtable_64.h
b/arch/sparc/include/asm/pgtable_64.h
index 4679e45c8348..a779418ceba9 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -187,25 +187,6 @@ bool kern_addr_valid(unsigned long addr);
#define _PAGE_SZHUGE_4U_PAGE_SZ4MB_4U
#define _PAGE_SZHUGE_4V_PAGE_SZ4MB_4V
-/* These are actually filled in at boot time by sun4{u,v}_pgprot_init() */
-#define __P000 __pgprot(0)
-#define __P001 __pgprot(0)
-#define __P010 __pgprot(0)
-#define __P011 __pgprot(0)
-#define __P100 __pgprot(0)
-#define __P101 __pgprot(0)
-#define __P110 __pgprot(0)
-#define __P111 __pgprot(0)
-
-#define __S000 __pgprot(0)
-#define __S001 __pgprot(0)
-#define __S010 __pgprot(0)
-#define __S011 __pgprot(0)
-#define __S100 __pgprot(0)
-#define __S101 __pgprot(0)
-#define __S110 __pgprot(0)
-#define __S111 __pgprot(0)
-
#ifndef __ASSEMBLY__
pte_t mk_pte_io(unsigned long, pgprot_t, int, unsigned long);
diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c
index 1e9f577f084d..d88e774c8eb4 100644
--- a/arch/sparc/mm/init_32.c
+++ b/arch/sparc/mm/init_32.c
@@ -302,3 +302,23 @@ void sparc_flush_page_to_ram(struct page *page)
__flush_page_to_ram(vaddr);
}
EXPORT_SYMBOL(sparc_flush_page_to_ram);
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_READONLY,
+ [VM_EXEC | VM_READ] = PAGE_READONLY,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED
+};
+DECLARE_VM_GET_PAGE_PROT
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index f6174df2d5af..d6faee23c77d 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64
[PATCH V6 03/26] powerpc/mm: Move protection_map[] inside the platform
This moves protection_map[] inside the platform and while here, also enable
ARCH_HAS_VM_GET_PAGE_PROT on 32 bit and nohash 64 (aka book3e/64) platforms
via DECLARE_VM_GET_PAGE_PROT.
Cc: Michael Ellerman
Cc: Paul Mackerras
Cc: Nicholas Piggin
Cc: linuxppc-...@lists.ozlabs.org
Cc: linux-ker...@vger.kernel.org
Reviewed-by: Christophe Leroy
Signed-off-by: Anshuman Khandual
---
arch/powerpc/Kconfig | 2 +-
arch/powerpc/include/asm/pgtable.h | 20 +---
arch/powerpc/mm/pgtable.c | 24
3 files changed, 26 insertions(+), 20 deletions(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index c2ce2e60c8f0..1035d172c7dd 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -140,7 +140,7 @@ config PPC
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAS_UACCESS_FLUSHCACHE
select ARCH_HAS_UBSAN_SANITIZE_ALL
- select ARCH_HAS_VM_GET_PAGE_PROTif PPC_BOOK3S_64
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_KEEP_MEMBLOCK
select ARCH_MIGHT_HAVE_PC_PARPORT
diff --git a/arch/powerpc/include/asm/pgtable.h
b/arch/powerpc/include/asm/pgtable.h
index d564d0ecd4cd..33f4bf8d22b0 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h
@@ -20,25 +20,6 @@ struct mm_struct;
#include
#endif /* !CONFIG_PPC_BOOK3S */
-/* Note due to the way vm flags are laid out, the bits are XWR */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY_X
-#define __P101 PAGE_READONLY_X
-#define __P110 PAGE_COPY_X
-#define __P111 PAGE_COPY_X
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY_X
-#define __S101 PAGE_READONLY_X
-#define __S110 PAGE_SHARED_X
-#define __S111 PAGE_SHARED_X
-
#ifndef __ASSEMBLY__
#ifndef MAX_PTRS_PER_PGD
@@ -79,6 +60,7 @@ extern void paging_init(void);
void poking_init(void);
extern unsigned long ioremap_bot;
+extern const pgprot_t protection_map[16];
/*
* kern_addr_valid is intended to indicate whether an address is a valid
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
index e6166b71d36d..cb2dcdb18f8e 100644
--- a/arch/powerpc/mm/pgtable.c
+++ b/arch/powerpc/mm/pgtable.c
@@ -472,3 +472,27 @@ pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea,
return ret_pte;
}
EXPORT_SYMBOL_GPL(__find_linux_pte);
+
+/* Note due to the way vm flags are laid out, the bits are XWR */
+const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_READONLY_X,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY_X,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_X,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY_X,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED_X,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_X
+};
+
+#ifndef CONFIG_PPC_BOOK3S_64
+DECLARE_VM_GET_PAGE_PROT
+#endif
--
2.25.1
___
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[PATCH V6 02/26] mm/mmap: Define DECLARE_VM_GET_PAGE_PROT
This just converts the generic vm_get_page_prot() implementation into a new
macro i.e DECLARE_VM_GET_PAGE_PROT which later can be used across platforms
when enabling them with ARCH_HAS_VM_GET_PAGE_PROT. This does not create any
functional change.
Cc: Andrew Morton
Cc: linux...@kvack.org
Cc: linux-ker...@vger.kernel.org
Reviewed-by: Christophe Leroy
Suggested-by: Christoph Hellwig
Signed-off-by: Anshuman Khandual
---
include/linux/pgtable.h | 28
mm/mmap.c | 26 +-
2 files changed, 29 insertions(+), 25 deletions(-)
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index 3cdc16cfd867..014ee8f0fbaa 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -1689,4 +1689,32 @@ typedef unsigned int pgtbl_mod_mask;
#define MAX_PTRS_PER_P4D PTRS_PER_P4D
#endif
+/* description of effects of mapping type and prot in current implementation.
+ * this is due to the limited x86 page protection hardware. The expected
+ * behavior is in parens:
+ *
+ * map_typeprot
+ * PROT_NONE PROT_READ PROT_WRITE PROT_EXEC
+ * MAP_SHARED r: (no) no r: (yes) yesr: (no) yes r: (no) yes
+ * w: (no) no w: (no) no w: (yes) yesw: (no) no
+ * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
+ *
+ * MAP_PRIVATE r: (no) no r: (yes) yesr: (no) yes r: (no) yes
+ * w: (no) no w: (no) no w: (copy) copy w: (no) no
+ * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
+ *
+ * On arm64, PROT_EXEC has the following behaviour for both MAP_SHARED and
+ * MAP_PRIVATE (with Enhanced PAN supported):
+ * r: (no) no
+ * w: (no) no
+ * x: (yes) yes
+ */
+#define DECLARE_VM_GET_PAGE_PROT \
+pgprot_t vm_get_page_prot(unsigned long vm_flags) \
+{ \
+ return protection_map[vm_flags &\
+ (VM_READ | VM_WRITE | VM_EXEC | VM_SHARED)];\
+} \
+EXPORT_SYMBOL(vm_get_page_prot);
+
#endif /* _LINUX_PGTABLE_H */
diff --git a/mm/mmap.c b/mm/mmap.c
index b01f0280bda2..b46d5e931bb3 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -81,26 +81,6 @@ static void unmap_region(struct mm_struct *mm,
struct vm_area_struct *vma, struct vm_area_struct *prev,
unsigned long start, unsigned long end);
-/* description of effects of mapping type and prot in current implementation.
- * this is due to the limited x86 page protection hardware. The expected
- * behavior is in parens:
- *
- * map_typeprot
- * PROT_NONE PROT_READ PROT_WRITE PROT_EXEC
- * MAP_SHARED r: (no) no r: (yes) yesr: (no) yes r: (no) yes
- * w: (no) no w: (no) no w: (yes) yesw: (no) no
- * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
- *
- * MAP_PRIVATE r: (no) no r: (yes) yesr: (no) yes r: (no) yes
- * w: (no) no w: (no) no w: (copy) copy w: (no) no
- * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
- *
- * On arm64, PROT_EXEC has the following behaviour for both MAP_SHARED and
- * MAP_PRIVATE (with Enhanced PAN supported):
- * r: (no) no
- * w: (no) no
- * x: (yes) yes
- */
#ifdef __P000
pgprot_t protection_map[16] __ro_after_init = {
[VM_NONE] = __P000,
@@ -123,11 +103,7 @@ pgprot_t protection_map[16] __ro_after_init = {
#endif
#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
-pgprot_t vm_get_page_prot(unsigned long vm_flags)
-{
- return protection_map[vm_flags & (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)];
-}
-EXPORT_SYMBOL(vm_get_page_prot);
+DECLARE_VM_GET_PAGE_PROT
#endif /* CONFIG_ARCH_HAS_VM_GET_PAGE_PROT */
static pgprot_t vm_pgprot_modify(pgprot_t oldprot, unsigned long vm_flags)
--
2.25.1
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[PATCH V6 01/26] mm/mmap: Build protect protection_map[] with __P000
Build protect generic protection_map[] array with __P000, so that it can be
moved inside all the platforms one after the other. Otherwise there will be
build failures during this process. CONFIG_ARCH_HAS_VM_GET_PAGE_PROT cannot
be used for this purpose as only certain platforms enable this config now.
Cc: Andrew Morton
Cc: linux...@kvack.org
Cc: linux-ker...@vger.kernel.org
Reviewed-by: Christoph Hellwig
Reviewed-by: Christophe Leroy
Suggested-by: Christophe Leroy
Signed-off-by: Anshuman Khandual
---
include/linux/mm.h | 2 ++
mm/mmap.c | 2 ++
2 files changed, 4 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index cf3d0d673f6b..0ff0a1bad091 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -424,7 +424,9 @@ extern unsigned int kobjsize(const void *objp);
* mapping from the currently active vm_flags protection bits (the
* low four bits) to a page protection mask..
*/
+#ifdef __P000
extern pgprot_t protection_map[16];
+#endif
/*
* The default fault flags that should be used by most of the
diff --git a/mm/mmap.c b/mm/mmap.c
index 61e6135c54ef..b01f0280bda2 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -101,6 +101,7 @@ static void unmap_region(struct mm_struct *mm,
* w: (no) no
* x: (yes) yes
*/
+#ifdef __P000
pgprot_t protection_map[16] __ro_after_init = {
[VM_NONE] = __P000,
[VM_READ] = __P001,
@@ -119,6 +120,7 @@ pgprot_t protection_map[16] __ro_after_init = {
[VM_SHARED | VM_EXEC | VM_WRITE]= __S110,
[VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = __S111
};
+#endif
#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
pgprot_t vm_get_page_prot(unsigned long vm_flags)
--
2.25.1
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[PATCH V6 00/26] mm/mmap: Drop __SXXX/__PXXX macros from across platforms
__SXXX/__PXXX macros is an unnecessary abstraction layer in creating the generic protection_map[] array which is used for vm_get_page_prot(). This abstraction layer can be avoided, if the platforms just define the array protection_map[] for all possible vm_flags access permission combinations and also export vm_get_page_prot() implementation. This series drops __SXXX/__PXXX macros from across platforms in the tree. First it build protects generic protection_map[] array with '#ifdef __P000' and moves it inside platforms which enable ARCH_HAS_VM_GET_PAGE_PROT. Later this build protects same array with '#ifdef ARCH_HAS_VM_GET_PAGE_PROT' and moves inside remaining platforms while enabling ARCH_HAS_VM_GET_PAGE_PROT. This adds a new macro DECLARE_VM_GET_PAGE_PROT defining the current generic vm_get_page_prot(), in order for it to be reused on platforms that do not require custom implementation. Finally, ARCH_HAS_VM_GET_PAGE_PROT can just be dropped, as all platforms now define and export vm_get_page_prot(), via looking up a private and static protection_map[] array. protection_map[] data type has been changed as 'static const' on all platforms that do not change it during boot. This series applies on v5.19-rc4 and has been build tested for multiple platforms. While here it has dropped off all previous tags from folks after the current restructuring. Series common CC list has been expanded to cover all impacted platforms for wider reach. - Anshuman Changes in V6: - Converted protection_map[] array as 'static const' on sparc32 platform - Rebased on v5.19-rc4 - Collected tags Changes in V5: https://lore.kernel.org/all/20220627045833.1590055-1-anshuman.khand...@arm.com/ - Converted most platfomr protection_map[] array as 'static const' - Moved DECLARE_VM_GET_PAGE_PROT inside - Moved generic protection_map[] comment near DECLARE_VM_GET_PAGE_PROT - Updated some commit messages Changes in V4: https://lore.kernel.org/all/20220624044339.1533882-1-anshuman.khand...@arm.com/ - Both protection_map[] and vm_get_page_prot() moves inside all platforms - Split patches to create modular changes for individual platforms - Add macro DECLARE_VM_GET_PAGE_PROT defining generic vm_get_page_prot() - Drop ARCH_HAS_VM_GET_PAGE_PROT Changes in V3: https://lore.kernel.org/all/20220616040924.1022607-1-anshuman.khand...@arm.com/ - Fix build issues on powerpc and riscv Changes in V2: https://lore.kernel.org/all/20220613053354.553579-1-anshuman.khand...@arm.com/ - Add 'const' identifier to protection_map[] on powerpc - Dropped #ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT check from sparc 32 - Dropped protection_map[] init from sparc 64 - Dropped all new platform changes subscribing ARCH_HAS_VM_GET_PAGE_PROT - Added a second patch which moves generic protection_map[] array into all remaining platforms (!ARCH_HAS_VM_GET_PAGE_PROT) Changes in V1: https://lore.kernel.org/all/20220603101411.488970-1-anshuman.khand...@arm.com/ Cc: Andrew Morton Cc: Christoph Hellwig Cc: Christophe Leroy Cc: linuxppc-...@lists.ozlabs.org Cc: sparcli...@vger.kernel.org Cc: x...@kernel.org Cc: openr...@lists.librecores.org Cc: linux-xte...@linux-xtensa.org Cc: linux-c...@vger.kernel.org Cc: linux-hexa...@vger.kernel.org Cc: linux-par...@vger.kernel.org Cc: linux-al...@vger.kernel.org Cc: linux-ri...@lists.infradead.org Cc: linux-c...@vger.kernel.org Cc: linux-s...@vger.kernel.org Cc: linux-i...@vger.kernel.org Cc: linux-m...@vger.kernel.org Cc: linux-m...@lists.linux-m68k.org Cc: linux-snps-arc@lists.infradead.org Cc: linux-arm-ker...@lists.infradead.org Cc: linux...@lists.infradead.org Cc: linux...@vger.kernel.org Cc: linux...@kvack.org Cc: linux-ker...@vger.kernel.org Anshuman Khandual (26): mm/mmap: Build protect protection_map[] with __P000 mm/mmap: Define DECLARE_VM_GET_PAGE_PROT powerpc/mm: Move protection_map[] inside the platform sparc/mm: Move protection_map[] inside the platform arm64/mm: Move protection_map[] inside the platform x86/mm: Move protection_map[] inside the platform mm/mmap: Build protect protection_map[] with ARCH_HAS_VM_GET_PAGE_PROT microblaze/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT loongarch/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT openrisc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT xtensa/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT hexagon/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT parisc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT alpha/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT nios2/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT riscv/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT csky/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT s390/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT ia64/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT mips/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT m68k/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT arc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT arm/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT um/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT sh/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT mm/mmap: Drop
Re: [PATCH V5 04/26] sparc/mm: Move protection_map[] inside the platform
On 6/27/22 22:44, Sam Ravnborg wrote:
> Hi Anshuman,
>
> On Mon, Jun 27, 2022 at 10:28:11AM +0530, Anshuman Khandual wrote:
>> This moves protection_map[] inside the platform and while here, also enable
>> ARCH_HAS_VM_GET_PAGE_PROT on 32 bit platforms via DECLARE_VM_GET_PAGE_PROT.
>>
>> Cc: "David S. Miller"
>> Cc: sparcli...@vger.kernel.org
>> Cc: linux-ker...@vger.kernel.org
>> Signed-off-by: Anshuman Khandual
>> ---
>> arch/sparc/Kconfig | 2 +-
>> arch/sparc/include/asm/pgtable_32.h | 19 ---
>> arch/sparc/include/asm/pgtable_64.h | 19 ---
>> arch/sparc/mm/init_32.c | 20
>> arch/sparc/mm/init_64.c | 3 +++
>> 5 files changed, 24 insertions(+), 39 deletions(-)
>>
>> diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
>> index ba449c47effd..09f868613a4d 100644
>> --- a/arch/sparc/Kconfig
>> +++ b/arch/sparc/Kconfig
>> @@ -13,6 +13,7 @@ config 64BIT
>> config SPARC
>> bool
>> default y
>> +select ARCH_HAS_VM_GET_PAGE_PROT
>> select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
>> select ARCH_MIGHT_HAVE_PC_SERIO
>> select DMA_OPS
>> @@ -84,7 +85,6 @@ config SPARC64
>> select PERF_USE_VMALLOC
>> select ARCH_HAVE_NMI_SAFE_CMPXCHG
>> select HAVE_C_RECORDMCOUNT
>> -select ARCH_HAS_VM_GET_PAGE_PROT
>> select HAVE_ARCH_AUDITSYSCALL
>> select ARCH_SUPPORTS_ATOMIC_RMW
>> select ARCH_SUPPORTS_DEBUG_PAGEALLOC
>> diff --git a/arch/sparc/include/asm/pgtable_32.h
>> b/arch/sparc/include/asm/pgtable_32.h
>> index 4866625da314..8ff549004fac 100644
>> --- a/arch/sparc/include/asm/pgtable_32.h
>> +++ b/arch/sparc/include/asm/pgtable_32.h
>> @@ -64,25 +64,6 @@ void paging_init(void);
>>
>> extern unsigned long ptr_in_current_pgd;
>>
>> -/* xwr */
>> -#define __P000 PAGE_NONE
>> -#define __P001 PAGE_READONLY
>> -#define __P010 PAGE_COPY
>> -#define __P011 PAGE_COPY
>> -#define __P100 PAGE_READONLY
>> -#define __P101 PAGE_READONLY
>> -#define __P110 PAGE_COPY
>> -#define __P111 PAGE_COPY
>> -
>> -#define __S000 PAGE_NONE
>> -#define __S001 PAGE_READONLY
>> -#define __S010 PAGE_SHARED
>> -#define __S011 PAGE_SHARED
>> -#define __S100 PAGE_READONLY
>> -#define __S101 PAGE_READONLY
>> -#define __S110 PAGE_SHARED
>> -#define __S111 PAGE_SHARED
>> -
>> /* First physical page can be anywhere, the following is needed so that
>> * va-->pa and vice versa conversions work properly without performance
>> * hit for all __pa()/__va() operations.
>> diff --git a/arch/sparc/include/asm/pgtable_64.h
>> b/arch/sparc/include/asm/pgtable_64.h
>> index 4679e45c8348..a779418ceba9 100644
>> --- a/arch/sparc/include/asm/pgtable_64.h
>> +++ b/arch/sparc/include/asm/pgtable_64.h
>> @@ -187,25 +187,6 @@ bool kern_addr_valid(unsigned long addr);
>> #define _PAGE_SZHUGE_4U _PAGE_SZ4MB_4U
>> #define _PAGE_SZHUGE_4V _PAGE_SZ4MB_4V
>>
>> -/* These are actually filled in at boot time by sun4{u,v}_pgprot_init() */
>> -#define __P000 __pgprot(0)
>> -#define __P001 __pgprot(0)
>> -#define __P010 __pgprot(0)
>> -#define __P011 __pgprot(0)
>> -#define __P100 __pgprot(0)
>> -#define __P101 __pgprot(0)
>> -#define __P110 __pgprot(0)
>> -#define __P111 __pgprot(0)
>> -
>> -#define __S000 __pgprot(0)
>> -#define __S001 __pgprot(0)
>> -#define __S010 __pgprot(0)
>> -#define __S011 __pgprot(0)
>> -#define __S100 __pgprot(0)
>> -#define __S101 __pgprot(0)
>> -#define __S110 __pgprot(0)
>> -#define __S111 __pgprot(0)
>> -
>> #ifndef __ASSEMBLY__
>>
>> pte_t mk_pte_io(unsigned long, pgprot_t, int, unsigned long);
>> diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c
>> index 1e9f577f084d..8693e4e28b86 100644
>> --- a/arch/sparc/mm/init_32.c
>> +++ b/arch/sparc/mm/init_32.c
>> @@ -302,3 +302,23 @@ void sparc_flush_page_to_ram(struct page *page)
>> __flush_page_to_ram(vaddr);
>> }
>> EXPORT_SYMBOL(sparc_flush_page_to_ram);
>> +
>> +static pgprot_t protection_map[16] __ro_after_init = {
> This can be const - like done for powerpc and others.
> sparc32 and sparc64 uses each their own - and I do not see sparc32 do
> any modifications to protection_map.
Indeed protection_map[] arrays are independent both for sparc32 and spacr64.
sparc32 platform never changes the protection_map[] array during boot. Sure,
will make it into a const instead. Thanks for pointing this out.
>
> With this change:
> Reviewed-by: Sam Ravnborg
>
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[PATCH V5 02/26] mm/mmap: Define DECLARE_VM_GET_PAGE_PROT
This just converts the generic vm_get_page_prot() implementation into a new
macro i.e DECLARE_VM_GET_PAGE_PROT which later can be used across platforms
when enabling them with ARCH_HAS_VM_GET_PAGE_PROT. This does not create any
functional change.
Cc: Andrew Morton
Cc: linux...@kvack.org
Cc: linux-ker...@vger.kernel.org
Suggested-by: Christoph Hellwig
Signed-off-by: Anshuman Khandual
---
include/linux/pgtable.h | 28
mm/mmap.c | 26 +-
2 files changed, 29 insertions(+), 25 deletions(-)
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index 3cdc16cfd867..014ee8f0fbaa 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -1689,4 +1689,32 @@ typedef unsigned int pgtbl_mod_mask;
#define MAX_PTRS_PER_P4D PTRS_PER_P4D
#endif
+/* description of effects of mapping type and prot in current implementation.
+ * this is due to the limited x86 page protection hardware. The expected
+ * behavior is in parens:
+ *
+ * map_typeprot
+ * PROT_NONE PROT_READ PROT_WRITE PROT_EXEC
+ * MAP_SHARED r: (no) no r: (yes) yesr: (no) yes r: (no) yes
+ * w: (no) no w: (no) no w: (yes) yesw: (no) no
+ * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
+ *
+ * MAP_PRIVATE r: (no) no r: (yes) yesr: (no) yes r: (no) yes
+ * w: (no) no w: (no) no w: (copy) copy w: (no) no
+ * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
+ *
+ * On arm64, PROT_EXEC has the following behaviour for both MAP_SHARED and
+ * MAP_PRIVATE (with Enhanced PAN supported):
+ * r: (no) no
+ * w: (no) no
+ * x: (yes) yes
+ */
+#define DECLARE_VM_GET_PAGE_PROT \
+pgprot_t vm_get_page_prot(unsigned long vm_flags) \
+{ \
+ return protection_map[vm_flags &\
+ (VM_READ | VM_WRITE | VM_EXEC | VM_SHARED)];\
+} \
+EXPORT_SYMBOL(vm_get_page_prot);
+
#endif /* _LINUX_PGTABLE_H */
diff --git a/mm/mmap.c b/mm/mmap.c
index b01f0280bda2..b46d5e931bb3 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -81,26 +81,6 @@ static void unmap_region(struct mm_struct *mm,
struct vm_area_struct *vma, struct vm_area_struct *prev,
unsigned long start, unsigned long end);
-/* description of effects of mapping type and prot in current implementation.
- * this is due to the limited x86 page protection hardware. The expected
- * behavior is in parens:
- *
- * map_typeprot
- * PROT_NONE PROT_READ PROT_WRITE PROT_EXEC
- * MAP_SHARED r: (no) no r: (yes) yesr: (no) yes r: (no) yes
- * w: (no) no w: (no) no w: (yes) yesw: (no) no
- * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
- *
- * MAP_PRIVATE r: (no) no r: (yes) yesr: (no) yes r: (no) yes
- * w: (no) no w: (no) no w: (copy) copy w: (no) no
- * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
- *
- * On arm64, PROT_EXEC has the following behaviour for both MAP_SHARED and
- * MAP_PRIVATE (with Enhanced PAN supported):
- * r: (no) no
- * w: (no) no
- * x: (yes) yes
- */
#ifdef __P000
pgprot_t protection_map[16] __ro_after_init = {
[VM_NONE] = __P000,
@@ -123,11 +103,7 @@ pgprot_t protection_map[16] __ro_after_init = {
#endif
#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
-pgprot_t vm_get_page_prot(unsigned long vm_flags)
-{
- return protection_map[vm_flags & (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)];
-}
-EXPORT_SYMBOL(vm_get_page_prot);
+DECLARE_VM_GET_PAGE_PROT
#endif /* CONFIG_ARCH_HAS_VM_GET_PAGE_PROT */
static pgprot_t vm_pgprot_modify(pgprot_t oldprot, unsigned long vm_flags)
--
2.25.1
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[PATCH V5 26/26] mm/mmap: Drop ARCH_HAS_VM_GET_PAGE_PROT
Now all the platforms enable ARCH_HAS_GET_PAGE_PROT. They define and export own vm_get_page_prot() whether custom or standard DECLARE_VM_GET_PAGE_PROT. Hence there is no need for default generic fallback for vm_get_page_prot(). Just drop this fallback and also ARCH_HAS_GET_PAGE_PROT mechanism. Cc: Andrew Morton Cc: linux...@kvack.org Cc: linux-ker...@vger.kernel.org Reviewed-by: Christoph Hellwig Signed-off-by: Anshuman Khandual --- arch/alpha/Kconfig | 1 - arch/arc/Kconfig| 1 - arch/arm/Kconfig| 1 - arch/arm64/Kconfig | 1 - arch/csky/Kconfig | 1 - arch/hexagon/Kconfig| 1 - arch/ia64/Kconfig | 1 - arch/loongarch/Kconfig | 1 - arch/m68k/Kconfig | 1 - arch/microblaze/Kconfig | 1 - arch/mips/Kconfig | 1 - arch/nios2/Kconfig | 1 - arch/openrisc/Kconfig | 1 - arch/parisc/Kconfig | 1 - arch/powerpc/Kconfig| 1 - arch/riscv/Kconfig | 1 - arch/s390/Kconfig | 1 - arch/sh/Kconfig | 1 - arch/sparc/Kconfig | 1 - arch/um/Kconfig | 1 - arch/x86/Kconfig| 1 - arch/xtensa/Kconfig | 1 - include/linux/mm.h | 3 --- mm/Kconfig | 3 --- mm/mmap.c | 22 -- 25 files changed, 50 deletions(-) diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index db1c8b329461..7d0d26b5b3f5 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -2,7 +2,6 @@ config ALPHA bool default y - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_32BIT_USTAT_F_TINODE select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 8be56a5d8a9b..9e3653253ef2 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -13,7 +13,6 @@ config ARC select ARCH_HAS_SETUP_DMA_OPS select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC select ARCH_32BIT_OFF_T select BUILDTIME_TABLE_SORT diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index e153b6d4fc5b..7630ba9cb6cc 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -24,7 +24,6 @@ config ARM select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB || !MMU select ARCH_HAS_TEARDOWN_DMA_OPS if MMU select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAVE_CUSTOM_GPIO_H select ARCH_HAVE_NMI_SAFE_CMPXCHG if CPU_V7 || CPU_V7M || CPU_V6K select ARCH_HAS_GCOV_PROFILE_ALL diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 1652a9800ebe..7030bf3f8d6f 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -45,7 +45,6 @@ config ARM64 select ARCH_HAS_SYSCALL_WRAPPER select ARCH_HAS_TEARDOWN_DMA_OPS if IOMMU_SUPPORT select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAS_ZONE_DMA_SET if EXPERT select ARCH_HAVE_ELF_PROT select ARCH_HAVE_NMI_SAFE_CMPXCHG diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig index 588b8a9c68ed..21d72b078eef 100644 --- a/arch/csky/Kconfig +++ b/arch/csky/Kconfig @@ -6,7 +6,6 @@ config CSKY select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_QUEUED_RWLOCKS select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 && $(cc-option,-mbacktrace) diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig index bc4ceecd0588..54eadf265178 100644 --- a/arch/hexagon/Kconfig +++ b/arch/hexagon/Kconfig @@ -6,7 +6,6 @@ config HEXAGON def_bool y select ARCH_32BIT_OFF_T select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_NO_PREEMPT select DMA_GLOBAL_POOL # Other pending projects/to-do items. diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 0510a5737711..cb93769a9f2a 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -12,7 +12,6 @@ config IA64 select ARCH_HAS_DMA_MARK_CLEAN select ARCH_HAS_STRNCPY_FROM_USER select ARCH_HAS_STRNLEN_USER - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO select ACPI diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index fd07b8e760ee..1920d52653b4 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -9,7 +9,6 @@ config LOONGARCH select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI select ARCH_HAS_PHYS_TO_DMA select ARCH_HAS_PTE_SPECIAL - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_INLINE_READ
[PATCH V5 25/26] sh/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Yoshinori Sato
Cc: Rich Felker
Cc: linux...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/sh/Kconfig | 1 +
arch/sh/include/asm/pgtable.h | 17 -
arch/sh/mm/mmap.c | 20
3 files changed, 21 insertions(+), 17 deletions(-)
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 5f220e903e5a..91f3ea325388 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -12,6 +12,7 @@ config SUPERH
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HIBERNATION_POSSIBLE if MMU
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_WANT_IPC_PARSE_VERSION
diff --git a/arch/sh/include/asm/pgtable.h b/arch/sh/include/asm/pgtable.h
index d7ddb1ec86a0..6fb9ec54cf9b 100644
--- a/arch/sh/include/asm/pgtable.h
+++ b/arch/sh/include/asm/pgtable.h
@@ -89,23 +89,6 @@ static inline unsigned long phys_addr_mask(void)
* completely separate permission bits for user and kernel space.
*/
/*xwr*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_EXECREAD
-#define __P101 PAGE_EXECREAD
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_WRITEONLY
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_EXECREAD
-#define __S101 PAGE_EXECREAD
-#define __S110 PAGE_RWX
-#define __S111 PAGE_RWX
typedef pte_t *pte_addr_t;
diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c
index 6a1a1297baae..46c1183493af 100644
--- a/arch/sh/mm/mmap.c
+++ b/arch/sh/mm/mmap.c
@@ -162,3 +162,23 @@ int valid_mmap_phys_addr_range(unsigned long pfn, size_t
size)
{
return 1;
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_EXECREAD,
+ [VM_EXEC | VM_READ] = PAGE_EXECREAD,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_WRITEONLY,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_EXECREAD,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_EXECREAD,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_RWX,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_RWX
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
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[PATCH V5 24/26] um/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Jeff Dike
Cc: linux...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/um/Kconfig | 1 +
arch/um/include/asm/pgtable.h | 17 -
arch/um/kernel/mem.c | 20
arch/x86/um/mem_32.c | 2 +-
4 files changed, 22 insertions(+), 18 deletions(-)
diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index 4ec22e156a2e..7fb43654e5b5 100644
--- a/arch/um/Kconfig
+++ b/arch/um/Kconfig
@@ -10,6 +10,7 @@ config UML
select ARCH_HAS_KCOV
select ARCH_HAS_STRNCPY_FROM_USER
select ARCH_HAS_STRNLEN_USER
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_NO_PREEMPT
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_SECCOMP_FILTER
diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h
index 167e236d9bb8..66bc3f99d9be 100644
--- a/arch/um/include/asm/pgtable.h
+++ b/arch/um/include/asm/pgtable.h
@@ -68,23 +68,6 @@ extern unsigned long end_iomem;
* Also, write permissions imply read permissions. This is the closest we can
* get..
*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED
/*
* ZERO_PAGE is a global shared page that is always zero: used
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index 15295c3237a0..5b259f0a1f94 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -197,3 +197,23 @@ void *uml_kmalloc(int size, int flags)
{
return kmalloc(size, flags);
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_READONLY,
+ [VM_EXEC | VM_READ] = PAGE_READONLY,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED
+};
+DECLARE_VM_GET_PAGE_PROT
diff --git a/arch/x86/um/mem_32.c b/arch/x86/um/mem_32.c
index 19c5dbd46770..cafd01f730da 100644
--- a/arch/x86/um/mem_32.c
+++ b/arch/x86/um/mem_32.c
@@ -17,7 +17,7 @@ static int __init gate_vma_init(void)
gate_vma.vm_start = FIXADDR_USER_START;
gate_vma.vm_end = FIXADDR_USER_END;
gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
- gate_vma.vm_page_prot = __P101;
+ gate_vma.vm_page_prot = PAGE_READONLY;
return 0;
}
--
2.25.1
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[PATCH V5 23/26] arm/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Russell King
Cc: Arnd Bergmann
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/arm/Kconfig | 1 +
arch/arm/include/asm/pgtable.h | 17 -
arch/arm/lib/uaccess_with_memcpy.c | 2 +-
arch/arm/mm/mmu.c | 20
4 files changed, 22 insertions(+), 18 deletions(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7630ba9cb6cc..e153b6d4fc5b 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -24,6 +24,7 @@ config ARM
select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB || !MMU
select ARCH_HAS_TEARDOWN_DMA_OPS if MMU
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAVE_CUSTOM_GPIO_H
select ARCH_HAVE_NMI_SAFE_CMPXCHG if CPU_V7 || CPU_V7M || CPU_V6K
select ARCH_HAS_GCOV_PROFILE_ALL
diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
index cd1f84bb40ae..78a532068fec 100644
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@ -137,23 +137,6 @@ extern pgprot_t phys_mem_access_prot(struct file *file,
unsigned long pfn,
* 2) If we could do execute protection, then read is implied
* 3) write implies read permissions
*/
-#define __P000 __PAGE_NONE
-#define __P001 __PAGE_READONLY
-#define __P010 __PAGE_COPY
-#define __P011 __PAGE_COPY
-#define __P100 __PAGE_READONLY_EXEC
-#define __P101 __PAGE_READONLY_EXEC
-#define __P110 __PAGE_COPY_EXEC
-#define __P111 __PAGE_COPY_EXEC
-
-#define __S000 __PAGE_NONE
-#define __S001 __PAGE_READONLY
-#define __S010 __PAGE_SHARED
-#define __S011 __PAGE_SHARED
-#define __S100 __PAGE_READONLY_EXEC
-#define __S101 __PAGE_READONLY_EXEC
-#define __S110 __PAGE_SHARED_EXEC
-#define __S111 __PAGE_SHARED_EXEC
#ifndef __ASSEMBLY__
/*
diff --git a/arch/arm/lib/uaccess_with_memcpy.c
b/arch/arm/lib/uaccess_with_memcpy.c
index c30b689bec2e..14eecaaf295f 100644
--- a/arch/arm/lib/uaccess_with_memcpy.c
+++ b/arch/arm/lib/uaccess_with_memcpy.c
@@ -237,7 +237,7 @@ static int __init test_size_treshold(void)
if (!dst_page)
goto no_dst;
kernel_ptr = page_address(src_page);
- user_ptr = vmap(&dst_page, 1, VM_IOREMAP, __pgprot(__P010));
+ user_ptr = vmap(&dst_page, 1, VM_IOREMAP, __pgprot(__PAGE_COPY));
if (!user_ptr)
goto no_vmap;
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 5e2be37a198e..2722abddd725 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -405,6 +405,26 @@ void __set_fixmap(enum fixed_addresses idx, phys_addr_t
phys, pgprot_t prot)
local_flush_tlb_kernel_range(vaddr, vaddr + PAGE_SIZE);
}
+static pgprot_t protection_map[16] __ro_after_init = {
+ [VM_NONE] = __PAGE_NONE,
+ [VM_READ] = __PAGE_READONLY,
+ [VM_WRITE] = __PAGE_COPY,
+ [VM_WRITE | VM_READ]= __PAGE_COPY,
+ [VM_EXEC] = __PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_READ] = __PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_WRITE]= __PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = __PAGE_COPY_EXEC,
+ [VM_SHARED] = __PAGE_NONE,
+ [VM_SHARED | VM_READ] = __PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = __PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= __PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = __PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_READ] = __PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= __PAGE_SHARED_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = __PAGE_SHARED_EXEC
+};
+DECLARE_VM_GET_PAGE_PROT
+
/*
* Adjust the PMD section entries according to the CPU in use.
*/
--
2.25.1
___
linux-snps-arc mailing list
linux-snps-arc@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V5 22/26] arc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Vineet Gupta
Cc: linux-snps-arc@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/arc/Kconfig | 1 +
arch/arc/include/asm/pgtable-bits-arcv2.h | 18 --
arch/arc/mm/mmap.c| 20
3 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 9e3653253ef2..8be56a5d8a9b 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -13,6 +13,7 @@ config ARC
select ARCH_HAS_SETUP_DMA_OPS
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC
select ARCH_32BIT_OFF_T
select BUILDTIME_TABLE_SORT
diff --git a/arch/arc/include/asm/pgtable-bits-arcv2.h
b/arch/arc/include/asm/pgtable-bits-arcv2.h
index 183d23bc1e00..b23be557403e 100644
--- a/arch/arc/include/asm/pgtable-bits-arcv2.h
+++ b/arch/arc/include/asm/pgtable-bits-arcv2.h
@@ -72,24 +72,6 @@
* This is to enable COW mechanism
*/
/* xwr */
-#define __P000 PAGE_U_NONE
-#define __P001 PAGE_U_R
-#define __P010 PAGE_U_R /* Pvt-W => !W */
-#define __P011 PAGE_U_R /* Pvt-W => !W */
-#define __P100 PAGE_U_X_R /* X => R */
-#define __P101 PAGE_U_X_R
-#define __P110 PAGE_U_X_R /* Pvt-W => !W and X => R */
-#define __P111 PAGE_U_X_R /* Pvt-W => !W */
-
-#define __S000 PAGE_U_NONE
-#define __S001 PAGE_U_R
-#define __S010 PAGE_U_W_R /* W => R */
-#define __S011 PAGE_U_W_R
-#define __S100 PAGE_U_X_R /* X => R */
-#define __S101 PAGE_U_X_R
-#define __S110 PAGE_U_X_W_R /* X => R */
-#define __S111 PAGE_U_X_W_R
-
#ifndef __ASSEMBLY__
#define pte_write(pte) (pte_val(pte) & _PAGE_WRITE)
diff --git a/arch/arc/mm/mmap.c b/arch/arc/mm/mmap.c
index 722d26b94307..fce5fa2b4f52 100644
--- a/arch/arc/mm/mmap.c
+++ b/arch/arc/mm/mmap.c
@@ -74,3 +74,23 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
info.align_offset = pgoff << PAGE_SHIFT;
return vm_unmapped_area(&info);
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_U_NONE,
+ [VM_READ] = PAGE_U_R,
+ [VM_WRITE] = PAGE_U_R,
+ [VM_WRITE | VM_READ]= PAGE_U_R,
+ [VM_EXEC] = PAGE_U_X_R,
+ [VM_EXEC | VM_READ] = PAGE_U_X_R,
+ [VM_EXEC | VM_WRITE]= PAGE_U_X_R,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_U_X_R,
+ [VM_SHARED] = PAGE_U_NONE,
+ [VM_SHARED | VM_READ] = PAGE_U_R,
+ [VM_SHARED | VM_WRITE] = PAGE_U_W_R,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_U_W_R,
+ [VM_SHARED | VM_EXEC] = PAGE_U_X_R,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_U_X_R,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_U_X_W_R,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_U_X_W_R
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V5 21/26] m68k/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Cc: Thomas Bogendoerfer Cc: linux-m...@lists.linux-m68k.org Cc: linux-ker...@vger.kernel.org Signed-off-by: Anshuman Khandual --- arch/m68k/Kconfig| 1 + arch/m68k/include/asm/mcf_pgtable.h | 54 --- arch/m68k/include/asm/motorola_pgtable.h | 22 -- arch/m68k/include/asm/sun3_pgtable.h | 17 arch/m68k/mm/mcfmmu.c| 55 arch/m68k/mm/motorola.c | 20 + arch/m68k/mm/sun3mmu.c | 20 + 7 files changed, 96 insertions(+), 93 deletions(-) diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 936cce42ae9a..49aa0cf13e96 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -7,6 +7,7 @@ config M68K select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA + select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS select ARCH_MIGHT_HAVE_PC_PARPORT if ISA select ARCH_NO_PREEMPT if !COLDFIRE diff --git a/arch/m68k/include/asm/mcf_pgtable.h b/arch/m68k/include/asm/mcf_pgtable.h index 94f38d76e278..0e9c1b28dcab 100644 --- a/arch/m68k/include/asm/mcf_pgtable.h +++ b/arch/m68k/include/asm/mcf_pgtable.h @@ -91,60 +91,6 @@ * for use. In general, the bit positions are xwr, and P-items are * private, the S-items are shared. */ -#define __P000 PAGE_NONE -#define __P001 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE) -#define __P010 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_WRITABLE) -#define __P011 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE \ -| CF_PAGE_WRITABLE) -#define __P100 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_EXEC) -#define __P101 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE \ -| CF_PAGE_EXEC) -#define __P110 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_WRITABLE \ -| CF_PAGE_EXEC) -#define __P111 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE \ -| CF_PAGE_WRITABLE \ -| CF_PAGE_EXEC) - -#define __S000 PAGE_NONE -#define __S001 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE) -#define __S010 PAGE_SHARED -#define __S011 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_SHARED \ -| CF_PAGE_READABLE) -#define __S100 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_EXEC) -#define __S101 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE \ -| CF_PAGE_EXEC) -#define __S110 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_SHARED \ -| CF_PAGE_EXEC) -#define __S111 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_SHARED \ -| CF_PAGE_READABLE \ -| CF_PAGE_EXEC) - #define PTE_MASK PAGE_MASK #define CF_PAGE_CHG_MASK (PTE_MASK | CF_PAGE_ACCESSED | CF_PAGE_DIRTY) diff --git a/arch/m68k/include/asm/motorola_pgtable.h b/arch/m68k/include/asm/motorola_pgtable.h index 7c9b56e2a750..63aaece0722f 100644 --- a/arch/m68k/include/asm/motorola_pgtable.h +++ b/arch/m68k/include/asm/motorola_pgtable.h @@ -83,28 +83,6 @@ extern unsigned long mm_cachebits; #define PAGE_COPY_C__pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED) #define PAGE_READONLY_C__pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED) -/* - * The m6
[PATCH V5 20/26] mips/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Thomas Bogendoerfer
Cc: linux-m...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/mips/Kconfig | 1 +
arch/mips/include/asm/pgtable.h | 22 --
arch/mips/mm/cache.c| 3 +++
3 files changed, 4 insertions(+), 22 deletions(-)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index db09d45d59ec..d0b7eb11ec81 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -14,6 +14,7 @@ config MIPS
select ARCH_HAS_STRNLEN_USER
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAS_UBSAN_SANITIZE_ALL
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_KEEP_MEMBLOCK
select ARCH_SUPPORTS_UPROBES
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
index 374c6322775d..6caec386ad2f 100644
--- a/arch/mips/include/asm/pgtable.h
+++ b/arch/mips/include/asm/pgtable.h
@@ -41,28 +41,6 @@ struct vm_area_struct;
* by reasonable means..
*/
-/*
- * Dummy values to fill the table in mmap.c
- * The real values will be generated at runtime
- */
-#define __P000 __pgprot(0)
-#define __P001 __pgprot(0)
-#define __P010 __pgprot(0)
-#define __P011 __pgprot(0)
-#define __P100 __pgprot(0)
-#define __P101 __pgprot(0)
-#define __P110 __pgprot(0)
-#define __P111 __pgprot(0)
-
-#define __S000 __pgprot(0)
-#define __S001 __pgprot(0)
-#define __S010 __pgprot(0)
-#define __S011 __pgprot(0)
-#define __S100 __pgprot(0)
-#define __S101 __pgprot(0)
-#define __S110 __pgprot(0)
-#define __S111 __pgprot(0)
-
extern unsigned long _page_cachable_default;
extern void __update_cache(unsigned long address, pte_t pte);
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
index 7be7240f7703..11b3e7ddafd5 100644
--- a/arch/mips/mm/cache.c
+++ b/arch/mips/mm/cache.c
@@ -159,6 +159,9 @@ EXPORT_SYMBOL(_page_cachable_default);
#define PM(p) __pgprot(_page_cachable_default | (p))
+static pgprot_t protection_map[16] __ro_after_init;
+DECLARE_VM_GET_PAGE_PROT
+
static inline void setup_protection_map(void)
{
protection_map[0] = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_NO_READ);
--
2.25.1
___
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V5 19/26] ia64/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: linux-i...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/ia64/Kconfig | 1 +
arch/ia64/include/asm/pgtable.h | 18 --
arch/ia64/mm/init.c | 28 +++-
3 files changed, 28 insertions(+), 19 deletions(-)
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index cb93769a9f2a..0510a5737711 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -12,6 +12,7 @@ config IA64
select ARCH_HAS_DMA_MARK_CLEAN
select ARCH_HAS_STRNCPY_FROM_USER
select ARCH_HAS_STRNLEN_USER
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
select ACPI
diff --git a/arch/ia64/include/asm/pgtable.h b/arch/ia64/include/asm/pgtable.h
index 7aa8f2330fb1..6925e28ae61d 100644
--- a/arch/ia64/include/asm/pgtable.h
+++ b/arch/ia64/include/asm/pgtable.h
@@ -161,24 +161,6 @@
* attempts to write to the page.
*/
/* xwr */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_READONLY /* write to priv pg -> copy & make writable */
-#define __P011 PAGE_READONLY /* ditto */
-#define __P100 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_X_RX)
-#define __P101 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RX)
-#define __P110 PAGE_COPY_EXEC
-#define __P111 PAGE_COPY_EXEC
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED /* we don't have (and don't need) write-only */
-#define __S011 PAGE_SHARED
-#define __S100 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_X_RX)
-#define __S101 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RX)
-#define __S110 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RWX)
-#define __S111 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RWX)
-
#define pgd_ERROR(e) printk("%s:%d: bad pgd %016lx.\n", __FILE__, __LINE__,
pgd_val(e))
#if CONFIG_PGTABLE_LEVELS == 4
#define pud_ERROR(e) printk("%s:%d: bad pud %016lx.\n", __FILE__, __LINE__,
pud_val(e))
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 855d949d81df..fc4e4217e87f 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -273,7 +273,7 @@ static int __init gate_vma_init(void)
gate_vma.vm_start = FIXADDR_USER_START;
gate_vma.vm_end = FIXADDR_USER_END;
gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
- gate_vma.vm_page_prot = __P101;
+ gate_vma.vm_page_prot = __pgprot(__ACCESS_BITS | _PAGE_PL_3 |
_PAGE_AR_RX);
return 0;
}
@@ -490,3 +490,29 @@ void arch_remove_memory(u64 start, u64 size, struct
vmem_altmap *altmap)
__remove_pages(start_pfn, nr_pages, altmap);
}
#endif
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_READONLY,
+ [VM_WRITE | VM_READ]= PAGE_READONLY,
+ [VM_EXEC] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+
_PAGE_AR_X_RX),
+ [VM_EXEC | VM_READ] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+ _PAGE_AR_RX),
+ [VM_EXEC | VM_WRITE]= PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_EXEC,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+
_PAGE_AR_X_RX),
+ [VM_SHARED | VM_EXEC | VM_READ] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+ _PAGE_AR_RX),
+ [VM_SHARED | VM_EXEC | VM_WRITE]=
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+
_PAGE_AR_RWX),
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+ _PAGE_AR_RWX)
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux
[PATCH V5 18/26] s390/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Heiko Carstens
Cc: Vasily Gorbik
Cc: linux-s...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/s390/Kconfig | 1 +
arch/s390/include/asm/pgtable.h | 17 -
arch/s390/mm/mmap.c | 20
3 files changed, 21 insertions(+), 17 deletions(-)
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 91c0b80a8bf0..c4481377ca83 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -81,6 +81,7 @@ config S390
select ARCH_HAS_SYSCALL_WRAPPER
select ARCH_HAS_UBSAN_SANITIZE_ALL
select ARCH_HAS_VDSO_DATA
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_INLINE_READ_LOCK
select ARCH_INLINE_READ_LOCK_BH
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index a397b072a580..c63a05b5368a 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -424,23 +424,6 @@ static inline int is_module_addr(void *addr)
* implies read permission.
*/
/*xwr*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_RO
-#define __P010 PAGE_RO
-#define __P011 PAGE_RO
-#define __P100 PAGE_RX
-#define __P101 PAGE_RX
-#define __P110 PAGE_RX
-#define __P111 PAGE_RX
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_RO
-#define __S010 PAGE_RW
-#define __S011 PAGE_RW
-#define __S100 PAGE_RX
-#define __S101 PAGE_RX
-#define __S110 PAGE_RWX
-#define __S111 PAGE_RWX
/*
* Segment entry (large page) protection definitions.
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index d545f5c39f7e..5980ce348832 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -188,3 +188,23 @@ void arch_pick_mmap_layout(struct mm_struct *mm, struct
rlimit *rlim_stack)
mm->get_unmapped_area = arch_get_unmapped_area_topdown;
}
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_RO,
+ [VM_WRITE] = PAGE_RO,
+ [VM_WRITE | VM_READ]= PAGE_RO,
+ [VM_EXEC] = PAGE_RX,
+ [VM_EXEC | VM_READ] = PAGE_RX,
+ [VM_EXEC | VM_WRITE]= PAGE_RX,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_RX,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_RO,
+ [VM_SHARED | VM_WRITE] = PAGE_RW,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_RW,
+ [VM_SHARED | VM_EXEC] = PAGE_RX,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_RX,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_RWX,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_RWX
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V5 17/26] csky/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Geert Uytterhoeven
Cc: linux-c...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Acked-by: Guo Ren
Signed-off-by: Anshuman Khandual
---
arch/csky/Kconfig | 1 +
arch/csky/include/asm/pgtable.h | 18 --
arch/csky/mm/init.c | 20
3 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig
index 21d72b078eef..588b8a9c68ed 100644
--- a/arch/csky/Kconfig
+++ b/arch/csky/Kconfig
@@ -6,6 +6,7 @@ config CSKY
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_QUEUED_RWLOCKS
select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 &&
$(cc-option,-mbacktrace)
diff --git a/arch/csky/include/asm/pgtable.h b/arch/csky/include/asm/pgtable.h
index bbe24511..229a5f4ad7fc 100644
--- a/arch/csky/include/asm/pgtable.h
+++ b/arch/csky/include/asm/pgtable.h
@@ -77,24 +77,6 @@
#define MAX_SWAPFILES_CHECK() \
BUILD_BUG_ON(MAX_SWAPFILES_SHIFT != 5)
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READ
-#define __P010 PAGE_READ
-#define __P011 PAGE_READ
-#define __P100 PAGE_READ
-#define __P101 PAGE_READ
-#define __P110 PAGE_READ
-#define __P111 PAGE_READ
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READ
-#define __S010 PAGE_WRITE
-#define __S011 PAGE_WRITE
-#define __S100 PAGE_READ
-#define __S101 PAGE_READ
-#define __S110 PAGE_WRITE
-#define __S111 PAGE_WRITE
-
extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)];
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
diff --git a/arch/csky/mm/init.c b/arch/csky/mm/init.c
index bf2004aa811a..bde7cabd23df 100644
--- a/arch/csky/mm/init.c
+++ b/arch/csky/mm/init.c
@@ -197,3 +197,23 @@ void __init fixaddr_init(void)
vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
fixrange_init(vaddr, vaddr + PMD_SIZE, swapper_pg_dir);
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READ,
+ [VM_WRITE] = PAGE_READ,
+ [VM_WRITE | VM_READ]= PAGE_READ,
+ [VM_EXEC] = PAGE_READ,
+ [VM_EXEC | VM_READ] = PAGE_READ,
+ [VM_EXEC | VM_WRITE]= PAGE_READ,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_READ,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READ,
+ [VM_SHARED | VM_WRITE] = PAGE_WRITE,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_WRITE,
+ [VM_SHARED | VM_EXEC] = PAGE_READ,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READ,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_WRITE,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_WRITE
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V5 16/26] riscv/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Paul Walmsley
Cc: Palmer Dabbelt
Cc: linux-ri...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/riscv/Kconfig | 1 +
arch/riscv/include/asm/pgtable.h | 20
arch/riscv/mm/init.c | 20
3 files changed, 21 insertions(+), 20 deletions(-)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 32ffef9f6e5b..583389d4e43a 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -32,6 +32,7 @@ config RISCV
select ARCH_HAS_STRICT_MODULE_RWX if MMU && !XIP_KERNEL
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAS_UBSAN_SANITIZE_ALL
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_OPTIONAL_KERNEL_RWX if ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_OPTIONAL_KERNEL_RWX_DEFAULT
select ARCH_STACKWALK
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 1d1be9d9419c..23e643db6575 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -186,26 +186,6 @@ extern struct pt_alloc_ops pt_ops __initdata;
extern pgd_t swapper_pg_dir[];
-/* MAP_PRIVATE permissions: xwr (copy-on-write) */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READ
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_EXEC
-#define __P101 PAGE_READ_EXEC
-#define __P110 PAGE_COPY_EXEC
-#define __P111 PAGE_COPY_READ_EXEC
-
-/* MAP_SHARED permissions: xwr */
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READ
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_EXEC
-#define __S101 PAGE_READ_EXEC
-#define __S110 PAGE_SHARED_EXEC
-#define __S111 PAGE_SHARED_EXEC
-
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
static inline int pmd_present(pmd_t pmd)
{
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index d466ec670e1f..a88b7dc31a68 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -288,6 +288,26 @@ static pmd_t __maybe_unused early_dtb_pmd[PTRS_PER_PMD]
__initdata __aligned(PAG
#define early_pg_dir ((pgd_t *)XIP_FIXUP(early_pg_dir))
#endif /* CONFIG_XIP_KERNEL */
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READ,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_EXEC,
+ [VM_EXEC | VM_READ] = PAGE_READ_EXEC,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_READ_EXEC,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READ,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_EXEC,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READ_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_EXEC
+};
+DECLARE_VM_GET_PAGE_PROT
+
void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot)
{
unsigned long addr = __fix_to_virt(idx);
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V5 15/26] nios2/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Dinh Nguyen
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/nios2/Kconfig | 1 +
arch/nios2/include/asm/pgtable.h | 16
arch/nios2/mm/init.c | 20
3 files changed, 21 insertions(+), 16 deletions(-)
diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index 4167f1eb4cd8..e0459dffd218 100644
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -6,6 +6,7 @@ config NIOS2
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
select ARCH_HAS_DMA_SET_UNCACHED
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_NO_SWAP
select COMMON_CLK
select TIMER_OF
diff --git a/arch/nios2/include/asm/pgtable.h b/arch/nios2/include/asm/pgtable.h
index 262d0609268c..470516d4555e 100644
--- a/arch/nios2/include/asm/pgtable.h
+++ b/arch/nios2/include/asm/pgtable.h
@@ -40,24 +40,8 @@ struct mm_struct;
*/
/* Remove W bit on private pages for COW support */
-#define __P000 MKP(0, 0, 0)
-#define __P001 MKP(0, 0, 1)
-#define __P010 MKP(0, 0, 0)/* COW */
-#define __P011 MKP(0, 0, 1)/* COW */
-#define __P100 MKP(1, 0, 0)
-#define __P101 MKP(1, 0, 1)
-#define __P110 MKP(1, 0, 0)/* COW */
-#define __P111 MKP(1, 0, 1)/* COW */
/* Shared pages can have exact HW mapping */
-#define __S000 MKP(0, 0, 0)
-#define __S001 MKP(0, 0, 1)
-#define __S010 MKP(0, 1, 0)
-#define __S011 MKP(0, 1, 1)
-#define __S100 MKP(1, 0, 0)
-#define __S101 MKP(1, 0, 1)
-#define __S110 MKP(1, 1, 0)
-#define __S111 MKP(1, 1, 1)
/* Used all over the kernel */
#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | _PAGE_CACHED | _PAGE_READ | \
diff --git a/arch/nios2/mm/init.c b/arch/nios2/mm/init.c
index 613fcaa5988a..ae24687d12ad 100644
--- a/arch/nios2/mm/init.c
+++ b/arch/nios2/mm/init.c
@@ -124,3 +124,23 @@ const char *arch_vma_name(struct vm_area_struct *vma)
{
return (vma->vm_start == KUSER_BASE) ? "[kuser]" : NULL;
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = MKP(0, 0, 0),
+ [VM_READ] = MKP(0, 0, 1),
+ [VM_WRITE] = MKP(0, 0, 0),
+ [VM_WRITE | VM_READ]= MKP(0, 0, 1),
+ [VM_EXEC] = MKP(1, 0, 0),
+ [VM_EXEC | VM_READ] = MKP(1, 0, 1),
+ [VM_EXEC | VM_WRITE]= MKP(1, 0, 0),
+ [VM_EXEC | VM_WRITE | VM_READ] = MKP(1, 0, 1),
+ [VM_SHARED] = MKP(0, 0, 0),
+ [VM_SHARED | VM_READ] = MKP(0, 0, 1),
+ [VM_SHARED | VM_WRITE] = MKP(0, 1, 0),
+ [VM_SHARED | VM_WRITE | VM_READ]= MKP(0, 1, 1),
+ [VM_SHARED | VM_EXEC] = MKP(1, 0, 0),
+ [VM_SHARED | VM_EXEC | VM_READ] = MKP(1, 0, 1),
+ [VM_SHARED | VM_EXEC | VM_WRITE]= MKP(1, 1, 0),
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = MKP(1, 1, 1)
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V5 14/26] alpha/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Richard Henderson
Cc: linux-al...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/alpha/Kconfig | 1 +
arch/alpha/include/asm/pgtable.h | 17 -
arch/alpha/mm/init.c | 22 ++
3 files changed, 23 insertions(+), 17 deletions(-)
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 7d0d26b5b3f5..db1c8b329461 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -2,6 +2,7 @@
config ALPHA
bool
default y
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_32BIT_USTAT_F_TINODE
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
diff --git a/arch/alpha/include/asm/pgtable.h b/arch/alpha/include/asm/pgtable.h
index 170451fde043..3ea9661c09ff 100644
--- a/arch/alpha/include/asm/pgtable.h
+++ b/arch/alpha/include/asm/pgtable.h
@@ -116,23 +116,6 @@ struct vm_area_struct;
* arch/alpha/mm/fault.c)
*/
/* xwr */
-#define __P000 _PAGE_P(_PAGE_FOE | _PAGE_FOW | _PAGE_FOR)
-#define __P001 _PAGE_P(_PAGE_FOE | _PAGE_FOW)
-#define __P010 _PAGE_P(_PAGE_FOE)
-#define __P011 _PAGE_P(_PAGE_FOE)
-#define __P100 _PAGE_P(_PAGE_FOW | _PAGE_FOR)
-#define __P101 _PAGE_P(_PAGE_FOW)
-#define __P110 _PAGE_P(0)
-#define __P111 _PAGE_P(0)
-
-#define __S000 _PAGE_S(_PAGE_FOE | _PAGE_FOW | _PAGE_FOR)
-#define __S001 _PAGE_S(_PAGE_FOE | _PAGE_FOW)
-#define __S010 _PAGE_S(_PAGE_FOE)
-#define __S011 _PAGE_S(_PAGE_FOE)
-#define __S100 _PAGE_S(_PAGE_FOW | _PAGE_FOR)
-#define __S101 _PAGE_S(_PAGE_FOW)
-#define __S110 _PAGE_S(0)
-#define __S111 _PAGE_S(0)
/*
* pgprot_noncached() is only for infiniband pci support, and a real
diff --git a/arch/alpha/mm/init.c b/arch/alpha/mm/init.c
index 7511723b7669..a155180d7a83 100644
--- a/arch/alpha/mm/init.c
+++ b/arch/alpha/mm/init.c
@@ -280,3 +280,25 @@ mem_init(void)
high_memory = (void *) __va(max_low_pfn * PAGE_SIZE);
memblock_free_all();
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = _PAGE_P(_PAGE_FOE |
_PAGE_FOW |
+ _PAGE_FOR),
+ [VM_READ] = _PAGE_P(_PAGE_FOE |
_PAGE_FOW),
+ [VM_WRITE] = _PAGE_P(_PAGE_FOE),
+ [VM_WRITE | VM_READ]= _PAGE_P(_PAGE_FOE),
+ [VM_EXEC] = _PAGE_P(_PAGE_FOW |
_PAGE_FOR),
+ [VM_EXEC | VM_READ] = _PAGE_P(_PAGE_FOW),
+ [VM_EXEC | VM_WRITE]= _PAGE_P(0),
+ [VM_EXEC | VM_WRITE | VM_READ] = _PAGE_P(0),
+ [VM_SHARED] = _PAGE_S(_PAGE_FOE |
_PAGE_FOW |
+ _PAGE_FOR),
+ [VM_SHARED | VM_READ] = _PAGE_S(_PAGE_FOE |
_PAGE_FOW),
+ [VM_SHARED | VM_WRITE] = _PAGE_S(_PAGE_FOE),
+ [VM_SHARED | VM_WRITE | VM_READ]= _PAGE_S(_PAGE_FOE),
+ [VM_SHARED | VM_EXEC] = _PAGE_S(_PAGE_FOW |
_PAGE_FOR),
+ [VM_SHARED | VM_EXEC | VM_READ] = _PAGE_S(_PAGE_FOW),
+ [VM_SHARED | VM_EXEC | VM_WRITE]= _PAGE_S(0),
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = _PAGE_S(0)
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V5 13/26] parisc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: "James E.J. Bottomley"
Cc: linux-par...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/parisc/Kconfig | 1 +
arch/parisc/include/asm/pgtable.h | 18 --
arch/parisc/mm/init.c | 20
3 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 5f2448dc5a2b..90eabc846f81 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -11,6 +11,7 @@ config PARISC
select ARCH_HAS_ELF_RANDOMIZE
select ARCH_HAS_STRICT_KERNEL_RWX
select ARCH_HAS_UBSAN_SANITIZE_ALL
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAS_PTE_SPECIAL
select ARCH_NO_SG_CHAIN
select ARCH_SUPPORTS_HUGETLBFS if PA20
diff --git a/arch/parisc/include/asm/pgtable.h
b/arch/parisc/include/asm/pgtable.h
index 69765a6dbe89..6a1899a9b420 100644
--- a/arch/parisc/include/asm/pgtable.h
+++ b/arch/parisc/include/asm/pgtable.h
@@ -271,24 +271,6 @@ extern void __update_cache(pte_t pte);
*/
/*xwr*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 __P000 /* copy on write */
-#define __P011 __P001 /* copy on write */
-#define __P100 PAGE_EXECREAD
-#define __P101 PAGE_EXECREAD
-#define __P110 __P100 /* copy on write */
-#define __P111 __P101 /* copy on write */
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_WRITEONLY
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_EXECREAD
-#define __S101 PAGE_EXECREAD
-#define __S110 PAGE_RWX
-#define __S111 PAGE_RWX
-
extern pgd_t swapper_pg_dir[]; /* declared in init_task.c */
diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index 0a81499dd35e..f03e0961fa25 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -871,3 +871,23 @@ void flush_tlb_all(void)
spin_unlock(&sid_lock);
}
#endif
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_NONE,
+ [VM_WRITE | VM_READ]= PAGE_READONLY,
+ [VM_EXEC] = PAGE_EXECREAD,
+ [VM_EXEC | VM_READ] = PAGE_EXECREAD,
+ [VM_EXEC | VM_WRITE]= PAGE_EXECREAD,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_EXECREAD,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_WRITEONLY,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_EXECREAD,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_EXECREAD,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_RWX,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_RWX
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V5 12/26] hexagon/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Brian Cain
Cc: linux-hexa...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/hexagon/Kconfig | 1 +
arch/hexagon/include/asm/pgtable.h | 27 ---
arch/hexagon/mm/init.c | 42 ++
3 files changed, 43 insertions(+), 27 deletions(-)
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index 54eadf265178..bc4ceecd0588 100644
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -6,6 +6,7 @@ config HEXAGON
def_bool y
select ARCH_32BIT_OFF_T
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_NO_PREEMPT
select DMA_GLOBAL_POOL
# Other pending projects/to-do items.
diff --git a/arch/hexagon/include/asm/pgtable.h
b/arch/hexagon/include/asm/pgtable.h
index 0610724d6a28..f7048c18b6f9 100644
--- a/arch/hexagon/include/asm/pgtable.h
+++ b/arch/hexagon/include/asm/pgtable.h
@@ -126,33 +126,6 @@ extern unsigned long _dflt_cache_att;
*/
#define CACHEDEF (CACHE_DEFAULT << 6)
-/* Private (copy-on-write) page protections. */
-#define __P000 __pgprot(_PAGE_PRESENT | _PAGE_USER | CACHEDEF)
-#define __P001 __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | CACHEDEF)
-#define __P010 __P000 /* Write-only copy-on-write */
-#define __P011 __P001 /* Read/Write copy-on-write */
-#define __P100 __pgprot(_PAGE_PRESENT | _PAGE_USER | \
- _PAGE_EXECUTE | CACHEDEF)
-#define __P101 __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_EXECUTE | \
- _PAGE_READ | CACHEDEF)
-#define __P110 __P100 /* Write/execute copy-on-write */
-#define __P111 __P101 /* Read/Write/Execute, copy-on-write */
-
-/* Shared page protections. */
-#define __S000 __P000
-#define __S001 __P001
-#define __S010 __pgprot(_PAGE_PRESENT | _PAGE_USER | \
- _PAGE_WRITE | CACHEDEF)
-#define __S011 __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | \
- _PAGE_WRITE | CACHEDEF)
-#define __S100 __pgprot(_PAGE_PRESENT | _PAGE_USER | \
- _PAGE_EXECUTE | CACHEDEF)
-#define __S101 __P101
-#define __S110 __pgprot(_PAGE_PRESENT | _PAGE_USER | \
- _PAGE_EXECUTE | _PAGE_WRITE | CACHEDEF)
-#define __S111 __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | \
- _PAGE_EXECUTE | _PAGE_WRITE | CACHEDEF)
-
extern pgd_t swapper_pg_dir[PTRS_PER_PGD]; /* located in head.S */
/* HUGETLB not working currently */
diff --git a/arch/hexagon/mm/init.c b/arch/hexagon/mm/init.c
index 3167a3b5c97b..146115c9de61 100644
--- a/arch/hexagon/mm/init.c
+++ b/arch/hexagon/mm/init.c
@@ -234,3 +234,45 @@ void __init setup_arch_memory(void)
* which is called by start_kernel() later on in the process
*/
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+ CACHEDEF),
+ [VM_READ] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+ _PAGE_READ |
CACHEDEF),
+ [VM_WRITE] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+ CACHEDEF),
+ [VM_WRITE | VM_READ]=
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+ _PAGE_READ |
CACHEDEF),
+ [VM_EXEC] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+
_PAGE_EXECUTE | CACHEDEF),
+ [VM_EXEC | VM_READ] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+
_PAGE_EXECUTE | _PAGE_READ |
+ CACHEDEF),
+ [VM_EXEC | VM_WRITE]=
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+
_PAGE_EXECUTE | CACHEDEF),
+ [VM_EXEC | VM_WRITE | VM_READ] =
__pgprot(_PAGE_PRESENT | _PAGE_USER |
+
_PAGE_EXECUTE | _PAGE_READ |
+ CACHEDEF),
+ [VM_SHARED] =
__pgprot(_PAGE_PRESENT | _PAG
[PATCH V5 11/26] xtensa/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Chris Zankel
Cc: Guo Ren
Cc: linux-xte...@linux-xtensa.org
Cc: linux-c...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/xtensa/Kconfig | 1 +
arch/xtensa/include/asm/pgtable.h | 18 --
arch/xtensa/mm/init.c | 20
3 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 0b0f0172cced..4c0d83520ff1 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -11,6 +11,7 @@ config XTENSA
select ARCH_HAS_DMA_SET_UNCACHED if MMU
select ARCH_HAS_STRNCPY_FROM_USER if !KASAN
select ARCH_HAS_STRNLEN_USER
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_USE_MEMTEST
select ARCH_USE_QUEUED_RWLOCKS
select ARCH_USE_QUEUED_SPINLOCKS
diff --git a/arch/xtensa/include/asm/pgtable.h
b/arch/xtensa/include/asm/pgtable.h
index 0a91376131c5..e0d5531ae00d 100644
--- a/arch/xtensa/include/asm/pgtable.h
+++ b/arch/xtensa/include/asm/pgtable.h
@@ -200,24 +200,6 @@
* What follows is the closest we can get by reasonable means..
* See linux/mm/mmap.c for protection_map[] array that uses these definitions.
*/
-#define __P000 PAGE_NONE /* private --- */
-#define __P001 PAGE_READONLY /* private --r */
-#define __P010 PAGE_COPY /* private -w- */
-#define __P011 PAGE_COPY /* private -wr */
-#define __P100 PAGE_READONLY_EXEC /* private x-- */
-#define __P101 PAGE_READONLY_EXEC /* private x-r */
-#define __P110 PAGE_COPY_EXEC /* private xw- */
-#define __P111 PAGE_COPY_EXEC /* private xwr */
-
-#define __S000 PAGE_NONE /* shared --- */
-#define __S001 PAGE_READONLY /* shared --r */
-#define __S010 PAGE_SHARED /* shared -w- */
-#define __S011 PAGE_SHARED /* shared -wr */
-#define __S100 PAGE_READONLY_EXEC /* shared x-- */
-#define __S101 PAGE_READONLY_EXEC /* shared x-r */
-#define __S110 PAGE_SHARED_EXEC/* shared xw- */
-#define __S111 PAGE_SHARED_EXEC/* shared xwr */
-
#ifndef __ASSEMBLY__
#define pte_ERROR(e) \
diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c
index 6a32b2cf2718..fb830ec8183c 100644
--- a/arch/xtensa/mm/init.c
+++ b/arch/xtensa/mm/init.c
@@ -216,3 +216,23 @@ static int __init parse_memmap_opt(char *str)
return 0;
}
early_param("memmap", parse_memmap_opt);
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_EXEC,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_EXEC
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
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http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V5 10/26] openrisc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Jonas Bonn
Cc: openr...@lists.librecores.org
Cc: linux-ker...@vger.kernel.org
Acked-by: Stafford Horne
Signed-off-by: Anshuman Khandual
---
arch/openrisc/Kconfig | 1 +
arch/openrisc/include/asm/pgtable.h | 18 --
arch/openrisc/mm/init.c | 20
3 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
index e814df4c483c..fe0dfb50eb86 100644
--- a/arch/openrisc/Kconfig
+++ b/arch/openrisc/Kconfig
@@ -10,6 +10,7 @@ config OPENRISC
select ARCH_HAS_DMA_SET_UNCACHED
select ARCH_HAS_DMA_CLEAR_UNCACHED
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_VM_GET_PAGE_PROT
select COMMON_CLK
select OF
select OF_EARLY_FLATTREE
diff --git a/arch/openrisc/include/asm/pgtable.h
b/arch/openrisc/include/asm/pgtable.h
index c3abbf71e09f..dcae8aea132f 100644
--- a/arch/openrisc/include/asm/pgtable.h
+++ b/arch/openrisc/include/asm/pgtable.h
@@ -176,24 +176,6 @@ extern void paging_init(void);
__pgprot(_PAGE_ALL | _PAGE_SRE | _PAGE_SWE \
| _PAGE_SHARED | _PAGE_DIRTY | _PAGE_EXEC | _PAGE_CI)
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY_X
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY_X
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY_X
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY_X
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY_X
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED_X
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY_X
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED_X
-
/* zero page used for uninitialized stuff */
extern unsigned long empty_zero_page[2048];
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c
index 3a021ab6f1ae..d531ab82be12 100644
--- a/arch/openrisc/mm/init.c
+++ b/arch/openrisc/mm/init.c
@@ -208,3 +208,23 @@ void __init mem_init(void)
mem_init_done = 1;
return;
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY_X,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY_X,
+ [VM_EXEC] = PAGE_READONLY,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_X,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY_X,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED_X,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_X
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
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[PATCH V5 09/26] loongarch/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Huacai Chen
Cc: WANG Xuerui
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/loongarch/Kconfig| 1 +
arch/loongarch/include/asm/pgtable-bits.h | 19 --
arch/loongarch/mm/cache.c | 46 +++
3 files changed, 47 insertions(+), 19 deletions(-)
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index 1920d52653b4..fd07b8e760ee 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -9,6 +9,7 @@ config LOONGARCH
select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI
select ARCH_HAS_PHYS_TO_DMA
select ARCH_HAS_PTE_SPECIAL
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_INLINE_READ_LOCK if !PREEMPTION
select ARCH_INLINE_READ_LOCK_BH if !PREEMPTION
diff --git a/arch/loongarch/include/asm/pgtable-bits.h
b/arch/loongarch/include/asm/pgtable-bits.h
index 3badd112d9ab..9ca147a29bab 100644
--- a/arch/loongarch/include/asm/pgtable-bits.h
+++ b/arch/loongarch/include/asm/pgtable-bits.h
@@ -83,25 +83,6 @@
_PAGE_GLOBAL | _PAGE_KERN | _CACHE_SUC)
#define PAGE_KERNEL_WUC __pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE | \
_PAGE_GLOBAL | _PAGE_KERN | _CACHE_WUC)
-
-#define __P000 __pgprot(_CACHE_CC | _PAGE_USER | _PAGE_PROTNONE |
_PAGE_NO_EXEC | _PAGE_NO_READ)
-#define __P001 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC)
-#define __P010 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC)
-#define __P011 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC)
-#define __P100 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-#define __P101 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-#define __P110 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-#define __P111 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-
-#define __S000 __pgprot(_CACHE_CC | _PAGE_USER | _PAGE_PROTNONE |
_PAGE_NO_EXEC | _PAGE_NO_READ)
-#define __S001 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC)
-#define __S010 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC | _PAGE_WRITE)
-#define __S011 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_NO_EXEC | _PAGE_WRITE)
-#define __S100 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-#define __S101 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT)
-#define __S110 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_WRITE)
-#define __S111 __pgprot(_CACHE_CC | _PAGE_VALID | _PAGE_USER | _PAGE_PRESENT |
_PAGE_WRITE)
-
#ifndef __ASSEMBLY__
#define pgprot_noncached pgprot_noncached
diff --git a/arch/loongarch/mm/cache.c b/arch/loongarch/mm/cache.c
index 9e5ce5aa73f7..e8c68dcf6ab2 100644
--- a/arch/loongarch/mm/cache.c
+++ b/arch/loongarch/mm/cache.c
@@ -139,3 +139,49 @@ void cpu_cache_init(void)
shm_align_mask = PAGE_SIZE - 1;
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = __pgprot(_CACHE_CC |
_PAGE_USER |
+
_PAGE_PROTNONE | _PAGE_NO_EXEC |
+
_PAGE_NO_READ),
+ [VM_READ] = __pgprot(_CACHE_CC |
_PAGE_VALID |
+ _PAGE_USER |
_PAGE_PRESENT |
+
_PAGE_NO_EXEC),
+ [VM_WRITE] = __pgprot(_CACHE_CC |
_PAGE_VALID |
+ _PAGE_USER |
_PAGE_PRESENT |
+
_PAGE_NO_EXEC),
+ [VM_WRITE | VM_READ]= __pgprot(_CACHE_CC |
_PAGE_VALID |
+ _PAGE_USER |
_PAGE_PRESENT |
+
_PAGE_NO_EXEC),
+ [VM_EXEC] = __pgprot(_CACHE_CC |
_PAGE_VALID |
+ _PAGE_USER |
_PAGE_PRESENT),
+ [VM_EXEC | VM_READ] = __pgprot(_CACHE_CC |
_PAGE_VALID |
+ _PAGE_USER |
_PAGE_PRESENT),
+ [VM_EXEC
[PATCH V5 08/26] microblaze/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Michal Simek
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/microblaze/Kconfig | 1 +
arch/microblaze/include/asm/pgtable.h | 17 -
arch/microblaze/mm/init.c | 20
3 files changed, 21 insertions(+), 17 deletions(-)
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 8cf429ad1c84..15f91ba8a0c4 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -7,6 +7,7 @@ config MICROBLAZE
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_WANT_IPC_PARSE_VERSION
select BUILDTIME_TABLE_SORT
diff --git a/arch/microblaze/include/asm/pgtable.h
b/arch/microblaze/include/asm/pgtable.h
index 0c72646370e1..ba348e997dbb 100644
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -204,23 +204,6 @@ extern pte_t *va_to_pte(unsigned long address);
* We consider execute permission the same as read.
* Also, write permissions imply read permissions.
*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY_X
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY_X
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY_X
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY_X
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY_X
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED_X
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY_X
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED_X
#ifndef __ASSEMBLY__
/*
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index f4e503461d24..353fabdfcbc5 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -285,3 +285,23 @@ void * __ref zalloc_maybe_bootmem(size_t size, gfp_t mask)
return p;
}
+
+static const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY_X,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY_X,
+ [VM_EXEC] = PAGE_READONLY,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_X,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY_X,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED_X,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_X
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
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[PATCH V5 07/26] mm/mmap: Build protect protection_map[] with ARCH_HAS_VM_GET_PAGE_PROT
Now that protection_map[] has been moved inside those platforms that enable
ARCH_HAS_VM_GET_PAGE_PROT. Hence generic protection_map[] array now can be
protected with CONFIG_ARCH_HAS_VM_GET_PAGE_PROT intead of __P000.
Cc: Andrew Morton
Cc: linux...@kvack.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
include/linux/mm.h | 2 +-
mm/mmap.c | 5 +
2 files changed, 2 insertions(+), 5 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 47bfe038d46e..65b7f3d9ff87 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -424,7 +424,7 @@ extern unsigned int kobjsize(const void *objp);
* mapping from the currently active vm_flags protection bits (the
* low four bits) to a page protection mask..
*/
-#ifdef __P000
+#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
extern pgprot_t protection_map[16];
#endif
diff --git a/mm/mmap.c b/mm/mmap.c
index b46d5e931bb3..2cc722e162fa 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -81,7 +81,7 @@ static void unmap_region(struct mm_struct *mm,
struct vm_area_struct *vma, struct vm_area_struct *prev,
unsigned long start, unsigned long end);
-#ifdef __P000
+#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
pgprot_t protection_map[16] __ro_after_init = {
[VM_NONE] = __P000,
[VM_READ] = __P001,
@@ -100,9 +100,6 @@ pgprot_t protection_map[16] __ro_after_init = {
[VM_SHARED | VM_EXEC | VM_WRITE]= __S110,
[VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = __S111
};
-#endif
-
-#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
DECLARE_VM_GET_PAGE_PROT
#endif /* CONFIG_ARCH_HAS_VM_GET_PAGE_PROT */
--
2.25.1
___
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[PATCH V5 06/26] x86/mm: Move protection_map[] inside the platform
This moves protection_map[] inside the platform and makes it a static. This
also defines a helper function add_encrypt_protection_map() that can update
the protection_map[] array with pgprot_encrypted().
Cc: Thomas Gleixner
Cc: Ingo Molnar
Cc: x...@kernel.org
Cc: linux-ker...@vger.kernel.org
Reviewed-by: Christoph Hellwig
Signed-off-by: Anshuman Khandual
---
arch/x86/include/asm/pgtable_types.h | 19 ---
arch/x86/mm/mem_encrypt_amd.c| 7 +++
arch/x86/mm/pgprot.c | 27 +++
3 files changed, 30 insertions(+), 23 deletions(-)
diff --git a/arch/x86/include/asm/pgtable_types.h
b/arch/x86/include/asm/pgtable_types.h
index bdaf8391e2e0..aa174fed3a71 100644
--- a/arch/x86/include/asm/pgtable_types.h
+++ b/arch/x86/include/asm/pgtable_types.h
@@ -230,25 +230,6 @@ enum page_cache_mode {
#endif /* __ASSEMBLY__ */
-/* xwr */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY_EXEC
-#define __P101 PAGE_READONLY_EXEC
-#define __P110 PAGE_COPY_EXEC
-#define __P111 PAGE_COPY_EXEC
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY_EXEC
-#define __S101 PAGE_READONLY_EXEC
-#define __S110 PAGE_SHARED_EXEC
-#define __S111 PAGE_SHARED_EXEC
-
/*
* early identity mapping pte attrib macros.
*/
diff --git a/arch/x86/mm/mem_encrypt_amd.c b/arch/x86/mm/mem_encrypt_amd.c
index f6d038e2cd8e..4b3ec87e8c7d 100644
--- a/arch/x86/mm/mem_encrypt_amd.c
+++ b/arch/x86/mm/mem_encrypt_amd.c
@@ -484,10 +484,10 @@ void __init early_set_mem_enc_dec_hypercall(unsigned long
vaddr, int npages, boo
enc_dec_hypercall(vaddr, npages, enc);
}
+void add_encrypt_protection_map(void);
+
void __init sme_early_init(void)
{
- unsigned int i;
-
if (!sme_me_mask)
return;
@@ -496,8 +496,7 @@ void __init sme_early_init(void)
__supported_pte_mask = __sme_set(__supported_pte_mask);
/* Update the protection map with memory encryption mask */
- for (i = 0; i < ARRAY_SIZE(protection_map); i++)
- protection_map[i] = pgprot_encrypted(protection_map[i]);
+ add_encrypt_protection_map();
x86_platform.guest.enc_status_change_prepare =
amd_enc_status_change_prepare;
x86_platform.guest.enc_status_change_finish =
amd_enc_status_change_finish;
diff --git a/arch/x86/mm/pgprot.c b/arch/x86/mm/pgprot.c
index 763742782286..b867839b16aa 100644
--- a/arch/x86/mm/pgprot.c
+++ b/arch/x86/mm/pgprot.c
@@ -4,6 +4,33 @@
#include
#include
+static pgprot_t protection_map[16] __ro_after_init = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_EXEC,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_EXEC
+};
+
+void add_encrypt_protection_map(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(protection_map); i++)
+ protection_map[i] = pgprot_encrypted(protection_map[i]);
+}
+
pgprot_t vm_get_page_prot(unsigned long vm_flags)
{
unsigned long val = pgprot_val(protection_map[vm_flags &
--
2.25.1
___
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[PATCH V5 05/26] arm64/mm: Move protection_map[] inside the platform
This moves protection_map[] inside the platform and makes it a static.
Cc: Catalin Marinas
Cc: Will Deacon
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Reviewed-by: Catalin Marinas
Signed-off-by: Anshuman Khandual
---
arch/arm64/include/asm/pgtable-prot.h | 18 --
arch/arm64/mm/mmap.c | 21 +
2 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/arm64/include/asm/pgtable-prot.h
b/arch/arm64/include/asm/pgtable-prot.h
index 62e0ebeed720..9b165117a454 100644
--- a/arch/arm64/include/asm/pgtable-prot.h
+++ b/arch/arm64/include/asm/pgtable-prot.h
@@ -89,24 +89,6 @@ extern bool arm64_use_ng_mappings;
#define PAGE_READONLY_EXEC __pgprot(_PAGE_DEFAULT | PTE_USER | PTE_RDONLY
| PTE_NG | PTE_PXN)
#define PAGE_EXECONLY __pgprot(_PAGE_DEFAULT | PTE_RDONLY | PTE_NG |
PTE_PXN)
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_READONLY
-#define __P011 PAGE_READONLY
-#define __P100 PAGE_READONLY_EXEC /* PAGE_EXECONLY if Enhanced PAN */
-#define __P101 PAGE_READONLY_EXEC
-#define __P110 PAGE_READONLY_EXEC
-#define __P111 PAGE_READONLY_EXEC
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY_EXEC /* PAGE_EXECONLY if Enhanced PAN */
-#define __S101 PAGE_READONLY_EXEC
-#define __S110 PAGE_SHARED_EXEC
-#define __S111 PAGE_SHARED_EXEC
-
#endif /* __ASSEMBLY__ */
#endif /* __ASM_PGTABLE_PROT_H */
diff --git a/arch/arm64/mm/mmap.c b/arch/arm64/mm/mmap.c
index 78e9490f748d..8f5b7ce857ed 100644
--- a/arch/arm64/mm/mmap.c
+++ b/arch/arm64/mm/mmap.c
@@ -13,6 +13,27 @@
#include
#include
+static pgprot_t protection_map[16] __ro_after_init = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_READONLY,
+ [VM_WRITE | VM_READ]= PAGE_READONLY,
+ /* PAGE_EXECONLY if Enhanced PAN */
+ [VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_WRITE]= PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ /* PAGE_EXECONLY if Enhanced PAN */
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_EXEC
+};
+
/*
* You really shouldn't be using read() or write() on /dev/mem. This might go
* away in the future.
--
2.25.1
___
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[PATCH V5 04/26] sparc/mm: Move protection_map[] inside the platform
This moves protection_map[] inside the platform and while here, also enable
ARCH_HAS_VM_GET_PAGE_PROT on 32 bit platforms via DECLARE_VM_GET_PAGE_PROT.
Cc: "David S. Miller"
Cc: sparcli...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/sparc/Kconfig | 2 +-
arch/sparc/include/asm/pgtable_32.h | 19 ---
arch/sparc/include/asm/pgtable_64.h | 19 ---
arch/sparc/mm/init_32.c | 20
arch/sparc/mm/init_64.c | 3 +++
5 files changed, 24 insertions(+), 39 deletions(-)
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index ba449c47effd..09f868613a4d 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -13,6 +13,7 @@ config 64BIT
config SPARC
bool
default y
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_MIGHT_HAVE_PC_PARPORT if SPARC64 && PCI
select ARCH_MIGHT_HAVE_PC_SERIO
select DMA_OPS
@@ -84,7 +85,6 @@ config SPARC64
select PERF_USE_VMALLOC
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select HAVE_C_RECORDMCOUNT
- select ARCH_HAS_VM_GET_PAGE_PROT
select HAVE_ARCH_AUDITSYSCALL
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_SUPPORTS_DEBUG_PAGEALLOC
diff --git a/arch/sparc/include/asm/pgtable_32.h
b/arch/sparc/include/asm/pgtable_32.h
index 4866625da314..8ff549004fac 100644
--- a/arch/sparc/include/asm/pgtable_32.h
+++ b/arch/sparc/include/asm/pgtable_32.h
@@ -64,25 +64,6 @@ void paging_init(void);
extern unsigned long ptr_in_current_pgd;
-/* xwr */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED
-
/* First physical page can be anywhere, the following is needed so that
* va-->pa and vice versa conversions work properly without performance
* hit for all __pa()/__va() operations.
diff --git a/arch/sparc/include/asm/pgtable_64.h
b/arch/sparc/include/asm/pgtable_64.h
index 4679e45c8348..a779418ceba9 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -187,25 +187,6 @@ bool kern_addr_valid(unsigned long addr);
#define _PAGE_SZHUGE_4U_PAGE_SZ4MB_4U
#define _PAGE_SZHUGE_4V_PAGE_SZ4MB_4V
-/* These are actually filled in at boot time by sun4{u,v}_pgprot_init() */
-#define __P000 __pgprot(0)
-#define __P001 __pgprot(0)
-#define __P010 __pgprot(0)
-#define __P011 __pgprot(0)
-#define __P100 __pgprot(0)
-#define __P101 __pgprot(0)
-#define __P110 __pgprot(0)
-#define __P111 __pgprot(0)
-
-#define __S000 __pgprot(0)
-#define __S001 __pgprot(0)
-#define __S010 __pgprot(0)
-#define __S011 __pgprot(0)
-#define __S100 __pgprot(0)
-#define __S101 __pgprot(0)
-#define __S110 __pgprot(0)
-#define __S111 __pgprot(0)
-
#ifndef __ASSEMBLY__
pte_t mk_pte_io(unsigned long, pgprot_t, int, unsigned long);
diff --git a/arch/sparc/mm/init_32.c b/arch/sparc/mm/init_32.c
index 1e9f577f084d..8693e4e28b86 100644
--- a/arch/sparc/mm/init_32.c
+++ b/arch/sparc/mm/init_32.c
@@ -302,3 +302,23 @@ void sparc_flush_page_to_ram(struct page *page)
__flush_page_to_ram(vaddr);
}
EXPORT_SYMBOL(sparc_flush_page_to_ram);
+
+static pgprot_t protection_map[16] __ro_after_init = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_READONLY,
+ [VM_EXEC | VM_READ] = PAGE_READONLY,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED
+};
+DECLARE_VM_GET_PAGE_PROT
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index f6174df2d5af..d6faee23c77d 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -2634,6 +2634,9
[PATCH V5 01/26] mm/mmap: Build protect protection_map[] with __P000
Build protect generic protection_map[] array with __P000, so that it can be
moved inside all the platforms one after the other. Otherwise there will be
build failures during this process. CONFIG_ARCH_HAS_VM_GET_PAGE_PROT cannot
be used for this purpose as only certain platforms enable this config now.
Cc: Andrew Morton
Cc: linux...@kvack.org
Cc: linux-ker...@vger.kernel.org
Reviewed-by: Christoph Hellwig
Suggested-by: Christophe Leroy
Signed-off-by: Anshuman Khandual
---
include/linux/mm.h | 2 ++
mm/mmap.c | 2 ++
2 files changed, 4 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index bc8f326be0ce..47bfe038d46e 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -424,7 +424,9 @@ extern unsigned int kobjsize(const void *objp);
* mapping from the currently active vm_flags protection bits (the
* low four bits) to a page protection mask..
*/
+#ifdef __P000
extern pgprot_t protection_map[16];
+#endif
/*
* The default fault flags that should be used by most of the
diff --git a/mm/mmap.c b/mm/mmap.c
index 61e6135c54ef..b01f0280bda2 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -101,6 +101,7 @@ static void unmap_region(struct mm_struct *mm,
* w: (no) no
* x: (yes) yes
*/
+#ifdef __P000
pgprot_t protection_map[16] __ro_after_init = {
[VM_NONE] = __P000,
[VM_READ] = __P001,
@@ -119,6 +120,7 @@ pgprot_t protection_map[16] __ro_after_init = {
[VM_SHARED | VM_EXEC | VM_WRITE]= __S110,
[VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = __S111
};
+#endif
#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
pgprot_t vm_get_page_prot(unsigned long vm_flags)
--
2.25.1
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[PATCH V5 03/26] powerpc/mm: Move protection_map[] inside the platform
This moves protection_map[] inside the platform and while here, also enable
ARCH_HAS_VM_GET_PAGE_PROT on 32 bit and nohash 64 (aka book3e/64) platforms
via DECLARE_VM_GET_PAGE_PROT.
Cc: Michael Ellerman
Cc: Paul Mackerras
Cc: Nicholas Piggin
Cc: linuxppc-...@lists.ozlabs.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/powerpc/Kconfig | 2 +-
arch/powerpc/include/asm/pgtable.h | 20 +---
arch/powerpc/mm/pgtable.c | 24
3 files changed, 26 insertions(+), 20 deletions(-)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index c2ce2e60c8f0..1035d172c7dd 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -140,7 +140,7 @@ config PPC
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAS_UACCESS_FLUSHCACHE
select ARCH_HAS_UBSAN_SANITIZE_ALL
- select ARCH_HAS_VM_GET_PAGE_PROTif PPC_BOOK3S_64
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_KEEP_MEMBLOCK
select ARCH_MIGHT_HAVE_PC_PARPORT
diff --git a/arch/powerpc/include/asm/pgtable.h
b/arch/powerpc/include/asm/pgtable.h
index d564d0ecd4cd..33f4bf8d22b0 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h
@@ -20,25 +20,6 @@ struct mm_struct;
#include
#endif /* !CONFIG_PPC_BOOK3S */
-/* Note due to the way vm flags are laid out, the bits are XWR */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY_X
-#define __P101 PAGE_READONLY_X
-#define __P110 PAGE_COPY_X
-#define __P111 PAGE_COPY_X
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY_X
-#define __S101 PAGE_READONLY_X
-#define __S110 PAGE_SHARED_X
-#define __S111 PAGE_SHARED_X
-
#ifndef __ASSEMBLY__
#ifndef MAX_PTRS_PER_PGD
@@ -79,6 +60,7 @@ extern void paging_init(void);
void poking_init(void);
extern unsigned long ioremap_bot;
+extern const pgprot_t protection_map[16];
/*
* kern_addr_valid is intended to indicate whether an address is a valid
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
index e6166b71d36d..cb2dcdb18f8e 100644
--- a/arch/powerpc/mm/pgtable.c
+++ b/arch/powerpc/mm/pgtable.c
@@ -472,3 +472,27 @@ pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea,
return ret_pte;
}
EXPORT_SYMBOL_GPL(__find_linux_pte);
+
+/* Note due to the way vm flags are laid out, the bits are XWR */
+const pgprot_t protection_map[16] = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_READONLY_X,
+ [VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY_X,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_X,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY_X,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_X,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED_X,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_X
+};
+
+#ifndef CONFIG_PPC_BOOK3S_64
+DECLARE_VM_GET_PAGE_PROT
+#endif
--
2.25.1
___
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[PATCH V5 00/26] mm/mmap: Drop __SXXX/__PXXX macros from across platforms
__SXXX/__PXXX macros is an unnecessary abstraction layer in creating the generic protection_map[] array which is used for vm_get_page_prot(). This abstraction layer can be avoided, if the platforms just define the array protection_map[] for all possible vm_flags access permission combinations and also export vm_get_page_prot() implementation. This series drops __SXXX/__PXXX macros from across platforms in the tree. First it build protects generic protection_map[] array with '#ifdef __P000' and moves it inside platforms which enable ARCH_HAS_VM_GET_PAGE_PROT. Later this build protects same array with '#ifdef ARCH_HAS_VM_GET_PAGE_PROT' and moves inside remaining platforms while enabling ARCH_HAS_VM_GET_PAGE_PROT. This adds a new macro DECLARE_VM_GET_PAGE_PROT defining the current generic vm_get_page_prot(), in order for it to be reused on platforms that do not require custom implementation. Finally, ARCH_HAS_VM_GET_PAGE_PROT can just be dropped, as all platforms now define and export vm_get_page_prot(), via looking up a private and static protection_map[] array. protection_map[] data type has been changed as 'static const' on all platforms that do not change it during boot. This series applies on v5.19-rc3 and has been build tested for multiple platforms. While here it has dropped off all previous tags from folks after the current restructuring. Series common CC list has been expanded to cover all impacted platforms for wider reach. - Anshuman Changes in V5: - Converted most platfomr protection_map[] array as 'static const' - Moved DECLARE_VM_GET_PAGE_PROT inside - Moved generic protection_map[] comment near DECLARE_VM_GET_PAGE_PROT - Updated some commit messages Changes in V4: https://lore.kernel.org/all/20220624044339.1533882-1-anshuman.khand...@arm.com/ - Both protection_map[] and vm_get_page_prot() moves inside all platforms - Split patches to create modular changes for individual platforms - Add macro DECLARE_VM_GET_PAGE_PROT defining generic vm_get_page_prot() - Drop ARCH_HAS_VM_GET_PAGE_PROT Changes in V3: https://lore.kernel.org/all/20220616040924.1022607-1-anshuman.khand...@arm.com/ - Fix build issues on powerpc and riscv Changes in V2: https://lore.kernel.org/all/20220613053354.553579-1-anshuman.khand...@arm.com/ - Add 'const' identifier to protection_map[] on powerpc - Dropped #ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT check from sparc 32 - Dropped protection_map[] init from sparc 64 - Dropped all new platform changes subscribing ARCH_HAS_VM_GET_PAGE_PROT - Added a second patch which moves generic protection_map[] array into all remaining platforms (!ARCH_HAS_VM_GET_PAGE_PROT) Changes in V1: https://lore.kernel.org/all/20220603101411.488970-1-anshuman.khand...@arm.com/ Cc: Andrew Morton Cc: Christoph Hellwig Cc: Christophe Leroy Cc: linuxppc-...@lists.ozlabs.org Cc: sparcli...@vger.kernel.org Cc: x...@kernel.org Cc: openr...@lists.librecores.org Cc: linux-xte...@linux-xtensa.org Cc: linux-c...@vger.kernel.org Cc: linux-hexa...@vger.kernel.org Cc: linux-par...@vger.kernel.org Cc: linux-al...@vger.kernel.org Cc: linux-ri...@lists.infradead.org Cc: linux-c...@vger.kernel.org Cc: linux-s...@vger.kernel.org Cc: linux-i...@vger.kernel.org Cc: linux-m...@vger.kernel.org Cc: linux-m...@lists.linux-m68k.org Cc: linux-snps-arc@lists.infradead.org Cc: linux-arm-ker...@lists.infradead.org Cc: linux...@lists.infradead.org Cc: linux...@vger.kernel.org Cc: linux...@kvack.org Cc: linux-ker...@vger.kernel.org Anshuman Khandual (26): mm/mmap: Build protect protection_map[] with __P000 mm/mmap: Define DECLARE_VM_GET_PAGE_PROT powerpc/mm: Move protection_map[] inside the platform sparc/mm: Move protection_map[] inside the platform arm64/mm: Move protection_map[] inside the platform x86/mm: Move protection_map[] inside the platform mm/mmap: Build protect protection_map[] with ARCH_HAS_VM_GET_PAGE_PROT microblaze/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT loongarch/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT openrisc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT xtensa/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT hexagon/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT parisc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT alpha/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT nios2/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT riscv/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT csky/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT s390/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT ia64/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT mips/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT m68k/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT arc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT arm/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT um/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT sh/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT mm/mmap: Drop ARCH_HAS_VM_GET_PAGE_PROT arch/alpha/include/asm/pgtable.h | 17 --- arch/alpha/mm/init.c | 22 + arch/arc/include/asm/pgtable-bits-arcv2.h | 18 arch/arc/mm/mmap.c
Re: [PATCH V4 02/26] mm/mmap: Define DECLARE_VM_GET_PAGE_PROT
On 6/24/22 10:58, Christophe Leroy wrote: > > Le 24/06/2022 à 06:43, Anshuman Khandual a écrit : >> This just converts the generic vm_get_page_prot() implementation into a new >> macro i.e DECLARE_VM_GET_PAGE_PROT which later can be used across platforms >> when enabling them with ARCH_HAS_VM_GET_PAGE_PROT. This does not create any >> functional change. >> >> Cc: Andrew Morton >> Cc: linux...@kvack.org >> Cc: linux-ker...@vger.kernel.org >> Suggested-by: Christoph Hellwig >> Signed-off-by: Anshuman Khandual >> --- >> include/linux/mm.h | 8 >> mm/mmap.c | 6 +- >> 2 files changed, 9 insertions(+), 5 deletions(-) >> >> diff --git a/include/linux/mm.h b/include/linux/mm.h >> index 47bfe038d46e..237828c2bae2 100644 >> --- a/include/linux/mm.h >> +++ b/include/linux/mm.h >> @@ -428,6 +428,14 @@ extern unsigned int kobjsize(const void *objp); >> extern pgprot_t protection_map[16]; >> #endif >> > I think the comment above protection_map[16] in mm/mmap.c should be > moved here. Sure, makes sense. Will move. ___ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc
Re: [PATCH V4 02/26] mm/mmap: Define DECLARE_VM_GET_PAGE_PROT
On 6/24/22 10:39, Christoph Hellwig wrote: > On Fri, Jun 24, 2022 at 10:13:15AM +0530, Anshuman Khandual wrote: >> This just converts the generic vm_get_page_prot() implementation into a new >> macro i.e DECLARE_VM_GET_PAGE_PROT which later can be used across platforms >> when enabling them with ARCH_HAS_VM_GET_PAGE_PROT. This does not create any >> functional change. > > mm.h is a huhe header included by almost everything in the kernel. > I'd rather have it in something only included in a few files. If we > can't find anything suitable it might be worth to add a header just > for this even. I guess should be better ? ___ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc
Re: [PATCH V4 07/26] mm/mmap: Build protect protection_map[] with ARCH_HAS_VM_GET_PAGE_PROT
On 6/24/22 10:52, Christophe Leroy wrote:
>
>
> Le 24/06/2022 à 06:43, Anshuman Khandual a écrit :
>> protection_map[] has already been moved inside those platforms which enable
>
> Usually "already" means before your series.
>
> Your series is the one that moves protection_map[] so I would have just
> said "Now that protection_map[] has been moved inside those platforms
> which enable "
Got it, will update the commit message.
>
>> ARCH_HAS_VM_GET_PAGE_PROT. Hence generic protection_map[] array now can be
>> protected with CONFIG_ARCH_HAS_VM_GET_PAGE_PROT intead of __P000.
>>
>> Cc: Andrew Morton
>> Cc: linux...@kvack.org
>> Cc: linux-ker...@vger.kernel.org
>> Signed-off-by: Anshuman Khandual
>> ---
>> include/linux/mm.h | 2 +-
>> mm/mmap.c | 5 +
>> 2 files changed, 2 insertions(+), 5 deletions(-)
>>
>> diff --git a/include/linux/mm.h b/include/linux/mm.h
>> index 237828c2bae2..70d900f6df43 100644
>> --- a/include/linux/mm.h
>> +++ b/include/linux/mm.h
>> @@ -424,7 +424,7 @@ extern unsigned int kobjsize(const void *objp);
>>* mapping from the currently active vm_flags protection bits (the
>>* low four bits) to a page protection mask..
>>*/
>> -#ifdef __P000
>> +#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
>> extern pgprot_t protection_map[16];
>
> Is this declaration still needed ? I have the feeling that
> protection_map[] is only used in mm/mmap.c now.
At this point generic protection_map[] array is still being used via
this declaration on many (!ARCH_HAS_VM_GET_PAGE_PROT) platforms such
as mips, m68k, arm etc.
>
>> #endif
>>
>> diff --git a/mm/mmap.c b/mm/mmap.c
>> index 55c30aee3999..43db3bd49071 100644
>> --- a/mm/mmap.c
>> +++ b/mm/mmap.c
>> @@ -101,7 +101,7 @@ static void unmap_region(struct mm_struct *mm,
>>* w: (no) no
>>* x: (yes) yes
>>*/
>> -#ifdef __P000
>> +#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
>> pgprot_t protection_map[16] __ro_after_init = {
>
> Should this be static, as it seems to now be used only in this file ?
This is being used in some platforms as mentioned before.
> And it could also be 'const' instead of __ro_after_init.
Then should be able to be a 'const' wrt mips, m68k, arm platforms.
But should this even be changed, if this is going to be dropped off
eventually ?
>
>> [VM_NONE] = __P000,
>> [VM_READ] = __P001,
>> @@ -120,9 +120,6 @@ pgprot_t protection_map[16] __ro_after_init = {
>> [VM_SHARED | VM_EXEC | VM_WRITE]= __S110,
>> [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = __S111
>> };
>> -#endif
>> -
>> -#ifndef CONFIG_ARCH_HAS_VM_GET_PAGE_PROT
>> DECLARE_VM_GET_PAGE_PROT
>> #endif /* CONFIG_ARCH_HAS_VM_GET_PAGE_PROT */
>>
___
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Re: [PATCH V4 03/26] powerpc/mm: Move protection_map[] inside the platform
On 6/24/22 10:48, Christophe Leroy wrote:
>
>
> Le 24/06/2022 à 06:43, Anshuman Khandual a écrit :
>> This moves protection_map[] inside the platform and while here, also enable
>> ARCH_HAS_VM_GET_PAGE_PROT on 32 bit platforms via DECLARE_VM_GET_PAGE_PROT.
>
> Not only 32 bit platforms, also nohash 64 (aka book3e/64)
Sure, will update the commit message.
>
>>
>> Cc: Michael Ellerman
>> Cc: Paul Mackerras
>> Cc: Nicholas Piggin
>> Cc: linuxppc-...@lists.ozlabs.org
>> Cc: linux-ker...@vger.kernel.org
>> Signed-off-by: Anshuman Khandual
>> ---
>> arch/powerpc/Kconfig | 2 +-
>> arch/powerpc/include/asm/pgtable.h | 20 +---
>> arch/powerpc/mm/pgtable.c | 24
>> 3 files changed, 26 insertions(+), 20 deletions(-)
>>
>> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
>> index c2ce2e60c8f0..1035d172c7dd 100644
>> --- a/arch/powerpc/Kconfig
>> +++ b/arch/powerpc/Kconfig
>> @@ -140,7 +140,7 @@ config PPC
>> select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
>> select ARCH_HAS_UACCESS_FLUSHCACHE
>> select ARCH_HAS_UBSAN_SANITIZE_ALL
>> -select ARCH_HAS_VM_GET_PAGE_PROTif PPC_BOOK3S_64
>> +select ARCH_HAS_VM_GET_PAGE_PROT
>> select ARCH_HAVE_NMI_SAFE_CMPXCHG
>> select ARCH_KEEP_MEMBLOCK
>> select ARCH_MIGHT_HAVE_PC_PARPORT
>> diff --git a/arch/powerpc/include/asm/pgtable.h
>> b/arch/powerpc/include/asm/pgtable.h
>> index d564d0ecd4cd..bf98db844579 100644
>> --- a/arch/powerpc/include/asm/pgtable.h
>> +++ b/arch/powerpc/include/asm/pgtable.h
>> @@ -20,25 +20,6 @@ struct mm_struct;
>> #include
>> #endif /* !CONFIG_PPC_BOOK3S */
>>
>> -/* Note due to the way vm flags are laid out, the bits are XWR */
>> -#define __P000 PAGE_NONE
>> -#define __P001 PAGE_READONLY
>> -#define __P010 PAGE_COPY
>> -#define __P011 PAGE_COPY
>> -#define __P100 PAGE_READONLY_X
>> -#define __P101 PAGE_READONLY_X
>> -#define __P110 PAGE_COPY_X
>> -#define __P111 PAGE_COPY_X
>> -
>> -#define __S000 PAGE_NONE
>> -#define __S001 PAGE_READONLY
>> -#define __S010 PAGE_SHARED
>> -#define __S011 PAGE_SHARED
>> -#define __S100 PAGE_READONLY_X
>> -#define __S101 PAGE_READONLY_X
>> -#define __S110 PAGE_SHARED_X
>> -#define __S111 PAGE_SHARED_X
>> -
>> #ifndef __ASSEMBLY__
>>
>> #ifndef MAX_PTRS_PER_PGD
>> @@ -79,6 +60,7 @@ extern void paging_init(void);
>> void poking_init(void);
>>
>> extern unsigned long ioremap_bot;
>> +extern pgprot_t protection_map[16] __ro_after_init;
>>
>> /*
>>* kern_addr_valid is intended to indicate whether an address is a valid
>> diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
>> index e6166b71d36d..618f30d35b17 100644
>> --- a/arch/powerpc/mm/pgtable.c
>> +++ b/arch/powerpc/mm/pgtable.c
>> @@ -472,3 +472,27 @@ pte_t *__find_linux_pte(pgd_t *pgdir, unsigned long ea,
>> return ret_pte;
>> }
>> EXPORT_SYMBOL_GPL(__find_linux_pte);
>> +
>> +/* Note due to the way vm flags are laid out, the bits are XWR */
>> +pgprot_t protection_map[16] __ro_after_init = {
>
> I can't see any place where protection_map[] gets modified. This could
> be made const.
Sure, will make it a const as in case for many other platforms as well.
>
>> +[VM_NONE] = PAGE_NONE,
>> +[VM_READ] = PAGE_READONLY,
>> +[VM_WRITE] = PAGE_COPY,
>> +[VM_WRITE | VM_READ]= PAGE_COPY,
>> +[VM_EXEC] = PAGE_READONLY_X,
>> +[VM_EXEC | VM_READ] = PAGE_READONLY_X,
>> +[VM_EXEC | VM_WRITE]= PAGE_COPY_X,
>> +[VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_X,
>> +[VM_SHARED] = PAGE_NONE,
>> +[VM_SHARED | VM_READ] = PAGE_READONLY,
>> +[VM_SHARED | VM_WRITE] = PAGE_SHARED,
>> +[VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
>> +[VM_SHARED | VM_EXEC] = PAGE_READONLY_X,
>> +[VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY_X,
>> +[VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED_X,
>> +[VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED_X
>> +};
>> +
>> +#ifndef CONFIG_PPC_BOOK3S_64
>> +DECLARE_VM_GET_PAGE_PROT
>> +#endif
___
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Re: [PATCH V4 00/26] mm/mmap: Drop __SXXX/__PXXX macros from across platforms
On 6/24/22 10:42, Christoph Hellwig wrote: > On Fri, Jun 24, 2022 at 10:13:13AM +0530, Anshuman Khandual wrote: >> vm_get_page_prot(), in order for it to be reused on platforms that do not >> require custom implementation. Finally, ARCH_HAS_VM_GET_PAGE_PROT can just >> be dropped, as all platforms now define and export vm_get_page_prot(), via >> looking up a private and static protection_map[] array. protection_map[] >> data type is the following for all platforms without deviation (except the >> powerpc one which is shared between 32 and 64 bit platforms), keeping it >> unchanged for now. >> >> static pgprot_t protection_map[16] __ro_after_init > > On most architectures this should be const now, only very few ever > modify it. Will make it a 'static const pgprot_t protection_map[16] __ro_after_init' on platforms that do not change the protection_map[] even during boot. ___ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V4 26/26] mm/mmap: Drop ARCH_HAS_VM_GET_PAGE_PROT
Now all the platforms enable ARCH_HAS_GET_PAGE_PROT. They define and export own vm_get_page_prot() whether custom or standard DECLARE_VM_GET_PAGE_PROT. Hence there is no need for default generic fallback for vm_get_page_prot(). Just drop this fallback and also ARCH_HAS_GET_PAGE_PROT mechanism. Cc: Andrew Morton Cc: linux...@kvack.org Cc: linux-ker...@vger.kernel.org Signed-off-by: Anshuman Khandual --- arch/alpha/Kconfig | 1 - arch/arc/Kconfig| 1 - arch/arm/Kconfig| 1 - arch/arm64/Kconfig | 1 - arch/csky/Kconfig | 1 - arch/hexagon/Kconfig| 1 - arch/ia64/Kconfig | 1 - arch/loongarch/Kconfig | 1 - arch/m68k/Kconfig | 1 - arch/microblaze/Kconfig | 1 - arch/mips/Kconfig | 1 - arch/nios2/Kconfig | 1 - arch/openrisc/Kconfig | 1 - arch/parisc/Kconfig | 1 - arch/powerpc/Kconfig| 1 - arch/riscv/Kconfig | 1 - arch/s390/Kconfig | 1 - arch/sh/Kconfig | 1 - arch/sparc/Kconfig | 1 - arch/um/Kconfig | 1 - arch/x86/Kconfig| 1 - arch/xtensa/Kconfig | 1 - include/linux/mm.h | 3 --- mm/Kconfig | 3 --- mm/mmap.c | 22 -- 25 files changed, 50 deletions(-) diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index db1c8b329461..7d0d26b5b3f5 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -2,7 +2,6 @@ config ALPHA bool default y - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_32BIT_USTAT_F_TINODE select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 8be56a5d8a9b..9e3653253ef2 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -13,7 +13,6 @@ config ARC select ARCH_HAS_SETUP_DMA_OPS select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC select ARCH_32BIT_OFF_T select BUILDTIME_TABLE_SORT diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index e153b6d4fc5b..7630ba9cb6cc 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -24,7 +24,6 @@ config ARM select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB || !MMU select ARCH_HAS_TEARDOWN_DMA_OPS if MMU select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAVE_CUSTOM_GPIO_H select ARCH_HAVE_NMI_SAFE_CMPXCHG if CPU_V7 || CPU_V7M || CPU_V6K select ARCH_HAS_GCOV_PROFILE_ALL diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 1652a9800ebe..7030bf3f8d6f 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -45,7 +45,6 @@ config ARM64 select ARCH_HAS_SYSCALL_WRAPPER select ARCH_HAS_TEARDOWN_DMA_OPS if IOMMU_SUPPORT select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAS_ZONE_DMA_SET if EXPERT select ARCH_HAVE_ELF_PROT select ARCH_HAVE_NMI_SAFE_CMPXCHG diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig index 588b8a9c68ed..21d72b078eef 100644 --- a/arch/csky/Kconfig +++ b/arch/csky/Kconfig @@ -6,7 +6,6 @@ config CSKY select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_SYNC_DMA_FOR_CPU select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_USE_BUILTIN_BSWAP select ARCH_USE_QUEUED_RWLOCKS select ARCH_WANT_FRAME_POINTERS if !CPU_CK610 && $(cc-option,-mbacktrace) diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig index bc4ceecd0588..54eadf265178 100644 --- a/arch/hexagon/Kconfig +++ b/arch/hexagon/Kconfig @@ -6,7 +6,6 @@ config HEXAGON def_bool y select ARCH_32BIT_OFF_T select ARCH_HAS_SYNC_DMA_FOR_DEVICE - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_NO_PREEMPT select DMA_GLOBAL_POOL # Other pending projects/to-do items. diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 0510a5737711..cb93769a9f2a 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -12,7 +12,6 @@ config IA64 select ARCH_HAS_DMA_MARK_CLEAN select ARCH_HAS_STRNCPY_FROM_USER select ARCH_HAS_STRNLEN_USER - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_MIGHT_HAVE_PC_PARPORT select ARCH_MIGHT_HAVE_PC_SERIO select ACPI diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index fd07b8e760ee..1920d52653b4 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -9,7 +9,6 @@ config LOONGARCH select ARCH_HAS_ACPI_TABLE_UPGRADE if ACPI select ARCH_HAS_PHYS_TO_DMA select ARCH_HAS_PTE_SPECIAL - select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_INLINE_READ_LOCK if !PREEMPTION
[PATCH V4 25/26] sh/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Yoshinori Sato
Cc: Rich Felker
Cc: linux...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/sh/Kconfig | 1 +
arch/sh/include/asm/pgtable.h | 17 -
arch/sh/mm/mmap.c | 20
3 files changed, 21 insertions(+), 17 deletions(-)
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 5f220e903e5a..91f3ea325388 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -12,6 +12,7 @@ config SUPERH
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HIBERNATION_POSSIBLE if MMU
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_WANT_IPC_PARSE_VERSION
diff --git a/arch/sh/include/asm/pgtable.h b/arch/sh/include/asm/pgtable.h
index d7ddb1ec86a0..6fb9ec54cf9b 100644
--- a/arch/sh/include/asm/pgtable.h
+++ b/arch/sh/include/asm/pgtable.h
@@ -89,23 +89,6 @@ static inline unsigned long phys_addr_mask(void)
* completely separate permission bits for user and kernel space.
*/
/*xwr*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_EXECREAD
-#define __P101 PAGE_EXECREAD
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_WRITEONLY
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_EXECREAD
-#define __S101 PAGE_EXECREAD
-#define __S110 PAGE_RWX
-#define __S111 PAGE_RWX
typedef pte_t *pte_addr_t;
diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c
index 6a1a1297baae..0a61ce6950bb 100644
--- a/arch/sh/mm/mmap.c
+++ b/arch/sh/mm/mmap.c
@@ -162,3 +162,23 @@ int valid_mmap_phys_addr_range(unsigned long pfn, size_t
size)
{
return 1;
}
+
+static pgprot_t protection_map[16] __ro_after_init = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_EXECREAD,
+ [VM_EXEC | VM_READ] = PAGE_EXECREAD,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_WRITEONLY,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_EXECREAD,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_EXECREAD,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_RWX,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_RWX
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
linux-snps-arc@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V4 24/26] um/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Jeff Dike
Cc: linux...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/um/Kconfig | 1 +
arch/um/include/asm/pgtable.h | 17 -
arch/um/kernel/mem.c | 20
arch/x86/um/mem_32.c | 2 +-
4 files changed, 22 insertions(+), 18 deletions(-)
diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index 4ec22e156a2e..7fb43654e5b5 100644
--- a/arch/um/Kconfig
+++ b/arch/um/Kconfig
@@ -10,6 +10,7 @@ config UML
select ARCH_HAS_KCOV
select ARCH_HAS_STRNCPY_FROM_USER
select ARCH_HAS_STRNLEN_USER
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_NO_PREEMPT
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_SECCOMP_FILTER
diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h
index 167e236d9bb8..66bc3f99d9be 100644
--- a/arch/um/include/asm/pgtable.h
+++ b/arch/um/include/asm/pgtable.h
@@ -68,23 +68,6 @@ extern unsigned long end_iomem;
* Also, write permissions imply read permissions. This is the closest we can
* get..
*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED
/*
* ZERO_PAGE is a global shared page that is always zero: used
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index 15295c3237a0..26ef8a77be59 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -197,3 +197,23 @@ void *uml_kmalloc(int size, int flags)
{
return kmalloc(size, flags);
}
+
+static pgprot_t protection_map[16] __ro_after_init = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_COPY,
+ [VM_WRITE | VM_READ]= PAGE_COPY,
+ [VM_EXEC] = PAGE_READONLY,
+ [VM_EXEC | VM_READ] = PAGE_READONLY,
+ [VM_EXEC | VM_WRITE]= PAGE_COPY,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_SHARED
+};
+DECLARE_VM_GET_PAGE_PROT
diff --git a/arch/x86/um/mem_32.c b/arch/x86/um/mem_32.c
index 19c5dbd46770..cafd01f730da 100644
--- a/arch/x86/um/mem_32.c
+++ b/arch/x86/um/mem_32.c
@@ -17,7 +17,7 @@ static int __init gate_vma_init(void)
gate_vma.vm_start = FIXADDR_USER_START;
gate_vma.vm_end = FIXADDR_USER_END;
gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
- gate_vma.vm_page_prot = __P101;
+ gate_vma.vm_page_prot = PAGE_READONLY;
return 0;
}
--
2.25.1
___
linux-snps-arc mailing list
linux-snps-arc@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V4 23/26] arm/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Russell King
Cc: Arnd Bergmann
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/arm/Kconfig | 1 +
arch/arm/include/asm/pgtable.h | 17 -
arch/arm/lib/uaccess_with_memcpy.c | 2 +-
arch/arm/mm/mmu.c | 20
4 files changed, 22 insertions(+), 18 deletions(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7630ba9cb6cc..e153b6d4fc5b 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -24,6 +24,7 @@ config ARM
select ARCH_HAS_SYNC_DMA_FOR_CPU if SWIOTLB || !MMU
select ARCH_HAS_TEARDOWN_DMA_OPS if MMU
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAVE_CUSTOM_GPIO_H
select ARCH_HAVE_NMI_SAFE_CMPXCHG if CPU_V7 || CPU_V7M || CPU_V6K
select ARCH_HAS_GCOV_PROFILE_ALL
diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
index cd1f84bb40ae..78a532068fec 100644
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@ -137,23 +137,6 @@ extern pgprot_t phys_mem_access_prot(struct file *file,
unsigned long pfn,
* 2) If we could do execute protection, then read is implied
* 3) write implies read permissions
*/
-#define __P000 __PAGE_NONE
-#define __P001 __PAGE_READONLY
-#define __P010 __PAGE_COPY
-#define __P011 __PAGE_COPY
-#define __P100 __PAGE_READONLY_EXEC
-#define __P101 __PAGE_READONLY_EXEC
-#define __P110 __PAGE_COPY_EXEC
-#define __P111 __PAGE_COPY_EXEC
-
-#define __S000 __PAGE_NONE
-#define __S001 __PAGE_READONLY
-#define __S010 __PAGE_SHARED
-#define __S011 __PAGE_SHARED
-#define __S100 __PAGE_READONLY_EXEC
-#define __S101 __PAGE_READONLY_EXEC
-#define __S110 __PAGE_SHARED_EXEC
-#define __S111 __PAGE_SHARED_EXEC
#ifndef __ASSEMBLY__
/*
diff --git a/arch/arm/lib/uaccess_with_memcpy.c
b/arch/arm/lib/uaccess_with_memcpy.c
index c30b689bec2e..14eecaaf295f 100644
--- a/arch/arm/lib/uaccess_with_memcpy.c
+++ b/arch/arm/lib/uaccess_with_memcpy.c
@@ -237,7 +237,7 @@ static int __init test_size_treshold(void)
if (!dst_page)
goto no_dst;
kernel_ptr = page_address(src_page);
- user_ptr = vmap(&dst_page, 1, VM_IOREMAP, __pgprot(__P010));
+ user_ptr = vmap(&dst_page, 1, VM_IOREMAP, __pgprot(__PAGE_COPY));
if (!user_ptr)
goto no_vmap;
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 5e2be37a198e..2722abddd725 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -405,6 +405,26 @@ void __set_fixmap(enum fixed_addresses idx, phys_addr_t
phys, pgprot_t prot)
local_flush_tlb_kernel_range(vaddr, vaddr + PAGE_SIZE);
}
+static pgprot_t protection_map[16] __ro_after_init = {
+ [VM_NONE] = __PAGE_NONE,
+ [VM_READ] = __PAGE_READONLY,
+ [VM_WRITE] = __PAGE_COPY,
+ [VM_WRITE | VM_READ]= __PAGE_COPY,
+ [VM_EXEC] = __PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_READ] = __PAGE_READONLY_EXEC,
+ [VM_EXEC | VM_WRITE]= __PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = __PAGE_COPY_EXEC,
+ [VM_SHARED] = __PAGE_NONE,
+ [VM_SHARED | VM_READ] = __PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = __PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= __PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] = __PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_READ] = __PAGE_READONLY_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= __PAGE_SHARED_EXEC,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = __PAGE_SHARED_EXEC
+};
+DECLARE_VM_GET_PAGE_PROT
+
/*
* Adjust the PMD section entries according to the CPU in use.
*/
--
2.25.1
___
linux-snps-arc mailing list
linux-snps-arc@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V4 22/26] arc/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Vineet Gupta
Cc: linux-snps-arc@lists.infradead.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/arc/Kconfig | 1 +
arch/arc/include/asm/pgtable-bits-arcv2.h | 18 --
arch/arc/mm/mmap.c| 20
3 files changed, 21 insertions(+), 18 deletions(-)
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index 9e3653253ef2..8be56a5d8a9b 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -13,6 +13,7 @@ config ARC
select ARCH_HAS_SETUP_DMA_OPS
select ARCH_HAS_SYNC_DMA_FOR_CPU
select ARCH_HAS_SYNC_DMA_FOR_DEVICE
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_SUPPORTS_ATOMIC_RMW if ARC_HAS_LLSC
select ARCH_32BIT_OFF_T
select BUILDTIME_TABLE_SORT
diff --git a/arch/arc/include/asm/pgtable-bits-arcv2.h
b/arch/arc/include/asm/pgtable-bits-arcv2.h
index 183d23bc1e00..b23be557403e 100644
--- a/arch/arc/include/asm/pgtable-bits-arcv2.h
+++ b/arch/arc/include/asm/pgtable-bits-arcv2.h
@@ -72,24 +72,6 @@
* This is to enable COW mechanism
*/
/* xwr */
-#define __P000 PAGE_U_NONE
-#define __P001 PAGE_U_R
-#define __P010 PAGE_U_R /* Pvt-W => !W */
-#define __P011 PAGE_U_R /* Pvt-W => !W */
-#define __P100 PAGE_U_X_R /* X => R */
-#define __P101 PAGE_U_X_R
-#define __P110 PAGE_U_X_R /* Pvt-W => !W and X => R */
-#define __P111 PAGE_U_X_R /* Pvt-W => !W */
-
-#define __S000 PAGE_U_NONE
-#define __S001 PAGE_U_R
-#define __S010 PAGE_U_W_R /* W => R */
-#define __S011 PAGE_U_W_R
-#define __S100 PAGE_U_X_R /* X => R */
-#define __S101 PAGE_U_X_R
-#define __S110 PAGE_U_X_W_R /* X => R */
-#define __S111 PAGE_U_X_W_R
-
#ifndef __ASSEMBLY__
#define pte_write(pte) (pte_val(pte) & _PAGE_WRITE)
diff --git a/arch/arc/mm/mmap.c b/arch/arc/mm/mmap.c
index 722d26b94307..7dd50b66f266 100644
--- a/arch/arc/mm/mmap.c
+++ b/arch/arc/mm/mmap.c
@@ -74,3 +74,23 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
info.align_offset = pgoff << PAGE_SHIFT;
return vm_unmapped_area(&info);
}
+
+static pgprot_t protection_map[16] __ro_after_init = {
+ [VM_NONE] = PAGE_U_NONE,
+ [VM_READ] = PAGE_U_R,
+ [VM_WRITE] = PAGE_U_R,
+ [VM_WRITE | VM_READ]= PAGE_U_R,
+ [VM_EXEC] = PAGE_U_X_R,
+ [VM_EXEC | VM_READ] = PAGE_U_X_R,
+ [VM_EXEC | VM_WRITE]= PAGE_U_X_R,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_U_X_R,
+ [VM_SHARED] = PAGE_U_NONE,
+ [VM_SHARED | VM_READ] = PAGE_U_R,
+ [VM_SHARED | VM_WRITE] = PAGE_U_W_R,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_U_W_R,
+ [VM_SHARED | VM_EXEC] = PAGE_U_X_R,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_U_X_R,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_U_X_W_R,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_U_X_W_R
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
linux-snps-arc mailing list
linux-snps-arc@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V4 21/26] m68k/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Cc: Thomas Bogendoerfer Cc: linux-m...@lists.linux-m68k.org Cc: linux-ker...@vger.kernel.org Signed-off-by: Anshuman Khandual --- arch/m68k/Kconfig| 1 + arch/m68k/include/asm/mcf_pgtable.h | 54 --- arch/m68k/include/asm/motorola_pgtable.h | 22 -- arch/m68k/include/asm/sun3_pgtable.h | 17 arch/m68k/mm/mcfmmu.c| 55 arch/m68k/mm/motorola.c | 20 + arch/m68k/mm/sun3mmu.c | 20 + 7 files changed, 96 insertions(+), 93 deletions(-) diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 936cce42ae9a..49aa0cf13e96 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -7,6 +7,7 @@ config M68K select ARCH_HAS_CURRENT_STACK_POINTER select ARCH_HAS_DMA_PREP_COHERENT if HAS_DMA && MMU && !COLDFIRE select ARCH_HAS_SYNC_DMA_FOR_DEVICE if HAS_DMA + select ARCH_HAS_VM_GET_PAGE_PROT select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS select ARCH_MIGHT_HAVE_PC_PARPORT if ISA select ARCH_NO_PREEMPT if !COLDFIRE diff --git a/arch/m68k/include/asm/mcf_pgtable.h b/arch/m68k/include/asm/mcf_pgtable.h index 94f38d76e278..0e9c1b28dcab 100644 --- a/arch/m68k/include/asm/mcf_pgtable.h +++ b/arch/m68k/include/asm/mcf_pgtable.h @@ -91,60 +91,6 @@ * for use. In general, the bit positions are xwr, and P-items are * private, the S-items are shared. */ -#define __P000 PAGE_NONE -#define __P001 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE) -#define __P010 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_WRITABLE) -#define __P011 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE \ -| CF_PAGE_WRITABLE) -#define __P100 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_EXEC) -#define __P101 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE \ -| CF_PAGE_EXEC) -#define __P110 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_WRITABLE \ -| CF_PAGE_EXEC) -#define __P111 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE \ -| CF_PAGE_WRITABLE \ -| CF_PAGE_EXEC) - -#define __S000 PAGE_NONE -#define __S001 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE) -#define __S010 PAGE_SHARED -#define __S011 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_SHARED \ -| CF_PAGE_READABLE) -#define __S100 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_EXEC) -#define __S101 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_READABLE \ -| CF_PAGE_EXEC) -#define __S110 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_SHARED \ -| CF_PAGE_EXEC) -#define __S111 __pgprot(CF_PAGE_VALID \ -| CF_PAGE_ACCESSED \ -| CF_PAGE_SHARED \ -| CF_PAGE_READABLE \ -| CF_PAGE_EXEC) - #define PTE_MASK PAGE_MASK #define CF_PAGE_CHG_MASK (PTE_MASK | CF_PAGE_ACCESSED | CF_PAGE_DIRTY) diff --git a/arch/m68k/include/asm/motorola_pgtable.h b/arch/m68k/include/asm/motorola_pgtable.h index 7c9b56e2a750..63aaece0722f 100644 --- a/arch/m68k/include/asm/motorola_pgtable.h +++ b/arch/m68k/include/asm/motorola_pgtable.h @@ -83,28 +83,6 @@ extern unsigned long mm_cachebits; #define PAGE_COPY_C__pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED) #define PAGE_READONLY_C__pgprot(_PAGE_PRESENT | _PAGE_RONLY | _PAGE_ACCESSED) -/* - * The m6
[PATCH V4 20/26] mips/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Thomas Bogendoerfer
Cc: linux-m...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/mips/Kconfig | 1 +
arch/mips/include/asm/pgtable.h | 22 --
arch/mips/mm/cache.c| 3 +++
3 files changed, 4 insertions(+), 22 deletions(-)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index db09d45d59ec..d0b7eb11ec81 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -14,6 +14,7 @@ config MIPS
select ARCH_HAS_STRNLEN_USER
select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
select ARCH_HAS_UBSAN_SANITIZE_ALL
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAS_GCOV_PROFILE_ALL
select ARCH_KEEP_MEMBLOCK
select ARCH_SUPPORTS_UPROBES
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
index 374c6322775d..6caec386ad2f 100644
--- a/arch/mips/include/asm/pgtable.h
+++ b/arch/mips/include/asm/pgtable.h
@@ -41,28 +41,6 @@ struct vm_area_struct;
* by reasonable means..
*/
-/*
- * Dummy values to fill the table in mmap.c
- * The real values will be generated at runtime
- */
-#define __P000 __pgprot(0)
-#define __P001 __pgprot(0)
-#define __P010 __pgprot(0)
-#define __P011 __pgprot(0)
-#define __P100 __pgprot(0)
-#define __P101 __pgprot(0)
-#define __P110 __pgprot(0)
-#define __P111 __pgprot(0)
-
-#define __S000 __pgprot(0)
-#define __S001 __pgprot(0)
-#define __S010 __pgprot(0)
-#define __S011 __pgprot(0)
-#define __S100 __pgprot(0)
-#define __S101 __pgprot(0)
-#define __S110 __pgprot(0)
-#define __S111 __pgprot(0)
-
extern unsigned long _page_cachable_default;
extern void __update_cache(unsigned long address, pte_t pte);
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
index 7be7240f7703..11b3e7ddafd5 100644
--- a/arch/mips/mm/cache.c
+++ b/arch/mips/mm/cache.c
@@ -159,6 +159,9 @@ EXPORT_SYMBOL(_page_cachable_default);
#define PM(p) __pgprot(_page_cachable_default | (p))
+static pgprot_t protection_map[16] __ro_after_init;
+DECLARE_VM_GET_PAGE_PROT
+
static inline void setup_protection_map(void)
{
protection_map[0] = PM(_PAGE_PRESENT | _PAGE_NO_EXEC | _PAGE_NO_READ);
--
2.25.1
___
linux-snps-arc mailing list
linux-snps-arc@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-snps-arc
[PATCH V4 19/26] ia64/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: linux-i...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/ia64/Kconfig | 1 +
arch/ia64/include/asm/pgtable.h | 18 --
arch/ia64/mm/init.c | 28 +++-
3 files changed, 28 insertions(+), 19 deletions(-)
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index cb93769a9f2a..0510a5737711 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -12,6 +12,7 @@ config IA64
select ARCH_HAS_DMA_MARK_CLEAN
select ARCH_HAS_STRNCPY_FROM_USER
select ARCH_HAS_STRNLEN_USER
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
select ACPI
diff --git a/arch/ia64/include/asm/pgtable.h b/arch/ia64/include/asm/pgtable.h
index 7aa8f2330fb1..6925e28ae61d 100644
--- a/arch/ia64/include/asm/pgtable.h
+++ b/arch/ia64/include/asm/pgtable.h
@@ -161,24 +161,6 @@
* attempts to write to the page.
*/
/* xwr */
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_READONLY /* write to priv pg -> copy & make writable */
-#define __P011 PAGE_READONLY /* ditto */
-#define __P100 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_X_RX)
-#define __P101 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RX)
-#define __P110 PAGE_COPY_EXEC
-#define __P111 PAGE_COPY_EXEC
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED /* we don't have (and don't need) write-only */
-#define __S011 PAGE_SHARED
-#define __S100 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_X_RX)
-#define __S101 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RX)
-#define __S110 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RWX)
-#define __S111 __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RWX)
-
#define pgd_ERROR(e) printk("%s:%d: bad pgd %016lx.\n", __FILE__, __LINE__,
pgd_val(e))
#if CONFIG_PGTABLE_LEVELS == 4
#define pud_ERROR(e) printk("%s:%d: bad pud %016lx.\n", __FILE__, __LINE__,
pud_val(e))
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 855d949d81df..9c91df243d62 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -273,7 +273,7 @@ static int __init gate_vma_init(void)
gate_vma.vm_start = FIXADDR_USER_START;
gate_vma.vm_end = FIXADDR_USER_END;
gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
- gate_vma.vm_page_prot = __P101;
+ gate_vma.vm_page_prot = __pgprot(__ACCESS_BITS | _PAGE_PL_3 |
_PAGE_AR_RX);
return 0;
}
@@ -490,3 +490,29 @@ void arch_remove_memory(u64 start, u64 size, struct
vmem_altmap *altmap)
__remove_pages(start_pfn, nr_pages, altmap);
}
#endif
+
+static pgprot_t protection_map[16] __ro_after_init = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_READONLY,
+ [VM_WRITE] = PAGE_READONLY,
+ [VM_WRITE | VM_READ]= PAGE_READONLY,
+ [VM_EXEC] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+
_PAGE_AR_X_RX),
+ [VM_EXEC | VM_READ] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+ _PAGE_AR_RX),
+ [VM_EXEC | VM_WRITE]= PAGE_COPY_EXEC,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY_EXEC,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_READONLY,
+ [VM_SHARED | VM_WRITE] = PAGE_SHARED,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_SHARED,
+ [VM_SHARED | VM_EXEC] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+
_PAGE_AR_X_RX),
+ [VM_SHARED | VM_EXEC | VM_READ] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+ _PAGE_AR_RX),
+ [VM_SHARED | VM_EXEC | VM_WRITE]=
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+
_PAGE_AR_RWX),
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] =
__pgprot(__ACCESS_BITS | _PAGE_PL_3 |
+ _PAGE_AR_RWX)
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
[PATCH V4 18/26] s390/mm: Enable ARCH_HAS_VM_GET_PAGE_PROT
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard
vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks
up a private and static protection_map[] array. Subsequently all __SXXX and
__PXXX macros can be dropped which are no longer needed.
Cc: Heiko Carstens
Cc: Vasily Gorbik
Cc: linux-s...@vger.kernel.org
Cc: linux-ker...@vger.kernel.org
Signed-off-by: Anshuman Khandual
---
arch/s390/Kconfig | 1 +
arch/s390/include/asm/pgtable.h | 17 -
arch/s390/mm/mmap.c | 20
3 files changed, 21 insertions(+), 17 deletions(-)
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 91c0b80a8bf0..c4481377ca83 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -81,6 +81,7 @@ config S390
select ARCH_HAS_SYSCALL_WRAPPER
select ARCH_HAS_UBSAN_SANITIZE_ALL
select ARCH_HAS_VDSO_DATA
+ select ARCH_HAS_VM_GET_PAGE_PROT
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_INLINE_READ_LOCK
select ARCH_INLINE_READ_LOCK_BH
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index a397b072a580..c63a05b5368a 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -424,23 +424,6 @@ static inline int is_module_addr(void *addr)
* implies read permission.
*/
/*xwr*/
-#define __P000 PAGE_NONE
-#define __P001 PAGE_RO
-#define __P010 PAGE_RO
-#define __P011 PAGE_RO
-#define __P100 PAGE_RX
-#define __P101 PAGE_RX
-#define __P110 PAGE_RX
-#define __P111 PAGE_RX
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_RO
-#define __S010 PAGE_RW
-#define __S011 PAGE_RW
-#define __S100 PAGE_RX
-#define __S101 PAGE_RX
-#define __S110 PAGE_RWX
-#define __S111 PAGE_RWX
/*
* Segment entry (large page) protection definitions.
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index d545f5c39f7e..c745b545012b 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -188,3 +188,23 @@ void arch_pick_mmap_layout(struct mm_struct *mm, struct
rlimit *rlim_stack)
mm->get_unmapped_area = arch_get_unmapped_area_topdown;
}
}
+
+static pgprot_t protection_map[16] __ro_after_init = {
+ [VM_NONE] = PAGE_NONE,
+ [VM_READ] = PAGE_RO,
+ [VM_WRITE] = PAGE_RO,
+ [VM_WRITE | VM_READ]= PAGE_RO,
+ [VM_EXEC] = PAGE_RX,
+ [VM_EXEC | VM_READ] = PAGE_RX,
+ [VM_EXEC | VM_WRITE]= PAGE_RX,
+ [VM_EXEC | VM_WRITE | VM_READ] = PAGE_RX,
+ [VM_SHARED] = PAGE_NONE,
+ [VM_SHARED | VM_READ] = PAGE_RO,
+ [VM_SHARED | VM_WRITE] = PAGE_RW,
+ [VM_SHARED | VM_WRITE | VM_READ]= PAGE_RW,
+ [VM_SHARED | VM_EXEC] = PAGE_RX,
+ [VM_SHARED | VM_EXEC | VM_READ] = PAGE_RX,
+ [VM_SHARED | VM_EXEC | VM_WRITE]= PAGE_RWX,
+ [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_RWX
+};
+DECLARE_VM_GET_PAGE_PROT
--
2.25.1
___
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