Le 19/04/2024 à 17:49, Mike Rapoport a écrit :
> Hi Masami,
>
> On Thu, Apr 18, 2024 at 06:16:15AM +0900, Masami Hiramatsu wrote:
>> Hi Mike,
>>
>> On Thu, 11 Apr 2024 19:00:50 +0300
>> Mike Rapoport wrote:
>>
>>> From: "Mike Rapoport (IBM)"
>>>
>>> kprobes depended on CONFIG_MODULES because
Le 11/04/2024 à 18:05, Mike Rapoport a écrit :
> From: "Mike Rapoport (IBM)"
>
> vmalloc allocations with VM_ALLOW_HUGE_VMAP that do not explictly
> specify node ID will use huge pages only if size_per_node is larger than
> PMD_SIZE.
> Still the actual allocated memory is not distributed
Le 26/03/2024 à 14:46, Jarkko Sakkinen a écrit :
> Tacing with kprobes while running a monolithic kernel is currently
> impossible due the kernel module allocator dependency.
>
> Address the issue by implementing textmem API for RISC-V.
>
> Link: https://www.sochub.fi # for power on testing
Le 26/03/2024 à 14:46, Jarkko Sakkinen a écrit :
> Tracing with kprobes while running a monolithic kernel is currently
> impossible because CONFIG_KPROBES depends on CONFIG_MODULES.
>
> Introduce alloc_execmem() and free_execmem() for allocating executable
> memory. If an arch implements these
Le 06/03/2024 à 21:05, Calvin Owens a écrit :
> [Vous ne recevez pas souvent de courriers de jcalvinow...@gmail.com.
> Découvrez pourquoi ceci est important à
> https://aka.ms/LearnAboutSenderIdentification ]
>
> If something like this is merged down the road, it can go in at leisure
> once
Le 06/03/2024 à 21:05, Calvin Owens a écrit :
> [Vous ne recevez pas souvent de courriers de jcalvinow...@gmail.com.
> Découvrez pourquoi ceci est important à
> https://aka.ms/LearnAboutSenderIdentification ]
>
> No BPF code has to change, except in struct_ops (for module refs).
>
> This
Hi Calvin,
Le 06/03/2024 à 21:05, Calvin Owens a écrit :
> [Vous ne recevez pas souvent de courriers de jcalvinow...@gmail.com.
> Découvrez pourquoi ceci est important à
> https://aka.ms/LearnAboutSenderIdentification ]
>
> Both BPF_JIT and KPROBES depend on CONFIG_MODULES, but only require
>
Le 31/01/2024 à 16:17, Marek Szyprowski a écrit :
> [Vous ne recevez pas souvent de courriers de m.szyprow...@samsung.com.
> Découvrez pourquoi ceci est important à
> https://aka.ms/LearnAboutSenderIdentification ]
>
> Hi Christophe,
>
> On 31.01.2024 12:58, Christophe
Hi,
Le 30/01/2024 à 18:48, Marek Szyprowski a écrit :
> [Vous ne recevez pas souvent de courriers de m.szyprow...@samsung.com.
> Découvrez pourquoi ceci est important à
> https://aka.ms/LearnAboutSenderIdentification ]
>
> Dear All,
>
> On 30.01.2024 12:03, Christophe Ler
Le 30/01/2024 à 21:27, Luis Chamberlain a écrit :
> On Tue, Jan 30, 2024 at 06:48:11PM +0100, Marek Szyprowski wrote:
>> Dear All,
>>
>> On 30.01.2024 12:03, Christophe Leroy wrote:
>>> Le 30/01/2024 à 10:16, Chen-Yu Tsai a écrit :
>>>> [Vous
n wrote:
>> On Thu, Dec 21, 2023 at 10:02:46AM +0100, Christophe Leroy wrote:
>>> Declaring rodata_enabled and mark_rodata_ro() at all time
>>> helps removing related #ifdefery in C files.
>>>
>>> Signed-off-by: Christophe Leroy
>>
>> Very nice
Le 18/04/2022 à 06:38, Shivaprasad G Bhat a écrit :
> papr_scm and ndtest share common PDSM payload structs like
> nd_papr_pdsm_health. Presently these structs are duplicated across
> papr_pdsm.h and ndtest.h header files. Since 'ndtest' is essentially
> arch independent and can run on platforms
Kees
>>
>> Christophe Leroy writes:
>>> Declaring rodata_enabled and mark_rodata_ro() at all time
>>> helps removing related #ifdefery in C files.
>>>
>>> Signed-off-by: Christophe Leroy
>>> ---
>>> include/linux/init.h |
Now that rodata_enabled is always declared, remove #ifdef
and define a single version of strict_kernel_rwx_enabled().
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/mmu.h | 9 +
1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/arch/powerpc/include/asm/mmu.h b
Now that rodata_enabled is declared at all time, the #ifdef
CONFIG_STRICT_MODULE_RWX can be removed.
Signed-off-by: Christophe Leroy
---
kernel/module/strict_rwx.c | 6 +-
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/kernel/module/strict_rwx.c b/kernel/module/strict_rwx.c
Declaring rodata_enabled and mark_rodata_ro() at all time
helps removing related #ifdefery in C files.
Signed-off-by: Christophe Leroy
---
include/linux/init.h | 4
init/main.c | 21 +++--
2 files changed, 7 insertions(+), 18 deletions(-)
diff --git a/include
.
Signed-off-by: Christophe Leroy
---
kernel/module/internal.h | 6 ++---
kernel/module/main.c | 18 ++
kernel/module/strict_rwx.c | 48 ++
3 files changed, 50 insertions(+), 22 deletions(-)
diff --git a/kernel/module/internal.h b/kernel
It's a bit puzzling to see a call to module_enable_nx() followed by a
call to module_enable_x(). This is because one applies on text while
the other applies on data.
Change name to make that more clear.
Signed-off-by: Christophe Leroy
---
kernel/module/internal.h | 6 +++---
kernel/module
ry_rox()")
Use set_memory_rox() in modules when STRICT_MODULES_RWX is set.
Signed-off-by: Christophe Leroy
---
kernel/module/internal.h | 2 +-
kernel/module/main.c | 2 +-
kernel/module/strict_rwx.c | 12 +++-
3 files changed, 9 insertions(+), 7 deletions(-)
diff -
Le 06/12/2023 à 08:36, Jiri Slaby (SUSE) a écrit :
> Switch character types to u8 and sizes to size_t. To conform to
> characters/sizes in the rest of the tty layer.
>
> Signed-off-by: Jiri Slaby (SUSE)
> Cc: Michael Ellerman
> Cc: Nicholas Piggin
> Cc: Christophe L
Hi Mike,
Le 18/09/2023 à 09:29, Mike Rapoport a écrit :
> From: "Mike Rapoport (IBM)"
>
> powerpc overrides kprobes::alloc_insn_page() to remove writable
> permissions when STRICT_MODULE_RWX is on.
>
> Add definition of EXECMEM_KRPOBES to execmem_params to allow using the
> generic
Le 22/09/2023 à 10:55, Song Liu a écrit :
> On Fri, Sep 22, 2023 at 12:17 AM Christophe Leroy
> wrote:
>>
>>
>>
>> Le 22/09/2023 à 00:52, Song Liu a écrit :
>>> On Mon, Sep 18, 2023 at 12:31 AM Mike Rapoport wrote:
>>>>
>>> [..
Le 22/09/2023 à 00:52, Song Liu a écrit :
> On Mon, Sep 18, 2023 at 12:31 AM Mike Rapoport wrote:
>>
> [...]
>> diff --git a/include/linux/execmem.h b/include/linux/execmem.h
>> index 519bdfdca595..09d45ac786e9 100644
>> --- a/include/linux/execmem.h
>> +++ b/include/linux/execmem.h
>> @@ -29,6
Le 09/04/2021 à 03:23, Daniel Walker a écrit :
On Thu, Apr 08, 2021 at 02:04:08PM -0500, Rob Herring wrote:
On Tue, Apr 06, 2021 at 10:38:36AM -0700, Daniel Walker wrote:
On Fri, Apr 02, 2021 at 03:18:21PM +, Christophe Leroy wrote:
-config CMDLINE_BOOL
- bool "Built-in k
In order to simplify use on PPC32, change ppc_inst_as_u64()
into ppc_inst_as_ulong() that returns the 32 bits instruction
on PPC32.
Will be used when porting OPTPROBES to PPC32.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/inst.h | 13 +++--
arch/powerpc/kernel
and use stmw/lmw to
save/restore registers.
Signed-off-by: Christophe Leroy
---
v2: Comments from Naveen.
---
arch/powerpc/Kconfig | 2 +-
arch/powerpc/kernel/optprobes.c | 24 --
arch/powerpc/kernel/optprobes_head.S | 65 +++-
3 files changed
Le 20/04/2021 à 15:32, Christophe Leroy a écrit :
From: Christophe Leroy
Oops, I forgot to reset the Author. Michael if you apply this patch please update the author and
remove the old Signed-off-by
Thanks
[0.00] ioremap() called early from
find_legacy_serial_ports+0x3cc
Le 20/04/2021 à 08:51, Naveen N. Rao a écrit :
Christophe Leroy wrote:
For that, create a 32 bits version of patch_imm64_load_insns()
and create a patch_imm_load_insns() which calls
patch_imm32_load_insns() on PPC32 and patch_imm64_load_insns()
on PPC64.
Adapt optprobes_head.S for PPC32
From: Christophe Leroy
[0.00] ioremap() called early from
find_legacy_serial_ports+0x3cc/0x474. Use early_ioremap() instead
find_legacy_serial_ports() is called early from setup_arch(), before
paging_init(). vmalloc is not available yet, ioremap shouldn't be
used that early.
Use
a fixed size
AREA at the top of the I/O space for fixmap and ensure during
build that the size is big enough.
Fixes: 265c3491c4bc ("powerpc: Add support for GENERIC_EARLY_IOREMAP")
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/book3s/64/pgtable.h | 4 +++-
arch/powerpc/i
Hi Chris,
Le 10/08/2020 à 04:01, Chris Packham a écrit :
On 24/03/20 10:54 am, Chris Packham wrote:
Hi Christophe,
On Wed, 2020-02-05 at 12:03 +, Christophe Leroy wrote:
[0.00] ioremap() called early from
find_legacy_serial_ports+0x3cc/0x474. Use early_ioremap() instead
I
of PPC_FPU but in practice nobody
is going to build such a machine, so make ALTIVEC require PPC_FPU
by depending on PPC_FPU.
Signed-off-by: Randy Dunlap
Reported-by: kernel test robot
Cc: Michael Ellerman
Cc: linuxppc-...@lists.ozlabs.org
Cc: Christophe Leroy
Cc: Segher Boessenkool
Cc: l
Le 19/04/2021 à 16:00, Steven Price a écrit :
On 19/04/2021 14:14, Christophe Leroy wrote:
Le 16/04/2021 à 12:51, Steven Price a écrit :
On 16/04/2021 11:38, Christophe Leroy wrote:
Le 16/04/2021 à 11:28, Steven Price a écrit :
On 15/04/2021 18:18, Christophe Leroy wrote
This patch makes use of trap types in irq.c
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/interrupt.h | 1 +
arch/powerpc/kernel/irq.c| 13 +
2 files changed, 6 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/include/asm/interrupt.h
b/arch
This patch makes use of trap types in head_8xx.S
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/interrupt.h | 29
arch/powerpc/kernel/head_8xx.S | 49 ++--
2 files changed, 47 insertions(+), 31 deletions(-)
diff --git a/arch/powerpc
This patch makes use of trap types in head_book3s_32.S
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/interrupt.h | 6
arch/powerpc/kernel/head_book3s_32.S | 43 ++--
2 files changed, 28 insertions(+), 21 deletions(-)
diff --git a/arch/powerpc
Le 19/04/2021 à 15:32, Segher Boessenkool a écrit :
Hi!
On Sun, Apr 18, 2021 at 01:17:26PM -0700, Randy Dunlap wrote:
Add ldstfp.o to the Makefile for CONFIG_ALTIVEC and add
externs for get_vr() and put_vr() in lib/sstep.c to fix the
build errors.
obj-$(CONFIG_PPC_FPU) += ldstfp.o
Le 16/04/2021 à 12:51, Steven Price a écrit :
On 16/04/2021 11:38, Christophe Leroy wrote:
Le 16/04/2021 à 11:28, Steven Price a écrit :
On 15/04/2021 18:18, Christophe Leroy wrote:
To be honest I don't fully understand why powerpc requires the page_size - it appears to be using
This patch converts powerpc to the generic PTDUMP implementation.
Signed-off-by: Christophe Leroy
---
arch/powerpc/Kconfig | 2 +
arch/powerpc/Kconfig.debug| 30 --
arch/powerpc/mm/Makefile | 2 +-
arch/powerpc/mm/mmu_decl.h| 2 +-
arch/powerpc
ent
dirty accessed
...
0xf95ac000-0xf95a 0x042b16K rw present
dirty accessed
0xfef5c000-0xfeff 0x0143400016K rpresent
accessed
---[ kasan shadow mem end ]---
Signed-off-by: Christoph
Pagewalk ignores hugepd entries and walk down the tables
as if it was traditionnal entries, leading to crazy result.
Add walk_hugepd_range() and use it to walk hugepage tables.
Signed-off-by: Christophe Leroy
---
v2:
- Add a guard for NULL ops->pte_entry
- Take mm->page_table_lock when w
gic that checked for contiguous physical memory
- Removed the articial level calculation in ptdump_pte_entry(), level 4 is ok
for all.
- Removed page_size argument to note_page()
Christophe Leroy (4):
mm: pagewalk: Fix walk for hugepage tables
powerpc/mm: Leave a gap between early allocated IO ar
Vmalloc system leaves a gap between allocated areas. It helps catching
overflows.
Do the same for IO areas which are allocated with early_ioremap_range()
until slab_is_available().
Signed-off-by: Christophe Leroy
---
arch/powerpc/mm/ioremap_32.c | 4 ++--
arch/powerpc/mm/ioremap_64.c | 2 +-
2
Le 18/04/2021 à 19:15, Randy Dunlap a écrit :
On 4/18/21 3:43 AM, Christophe Leroy wrote:
Le 18/04/2021 à 02:02, Randy Dunlap a écrit :
HI--
I no longer see this build error.
Fixed by
https://github.com/torvalds/linux/commit/acdad8fb4a1574323db88f98a38b630691574e16
However:
On 2/27
Le 17/04/2021 à 22:17, Randy Dunlap a écrit :
Hi,
kernel test robot reports:
drivers/cpufreq/pmac32-cpufreq.c:262:2: error: implicit declaration of function
'enable_kernel_fp' [-Werror,-Wimplicit-function-declaration]
enable_kernel_fp();
^
when
# CONFIG_PPC_FPU
Le 18/04/2021 à 02:02, Randy Dunlap a écrit :
HI--
I no longer see this build error.
Fixed by
https://github.com/torvalds/linux/commit/acdad8fb4a1574323db88f98a38b630691574e16
However:
On 2/27/21 2:24 AM, kernel test robot wrote:
tree:
Le 16/04/2021 à 01:49, Alexei Starovoitov a écrit :
On Thu, Apr 15, 2021 at 8:41 AM Quentin Monnet wrote:
2021-04-15 16:37 UTC+0200 ~ Daniel Borkmann
On 4/15/21 11:32 AM, Jianlin Lv wrote:
For debugging JITs, dumping the JITed image to kernel log is discouraged,
"bpftool prog dump
Le 16/04/2021 à 17:04, Christophe Leroy a écrit :
Le 16/04/2021 à 16:40, Christophe Leroy a écrit :
Le 16/04/2021 à 15:00, Steven Price a écrit :
On 16/04/2021 12:08, Christophe Leroy wrote:
Le 16/04/2021 à 12:51, Steven Price a écrit :
On 16/04/2021 11:38, Christophe Leroy wrote
Le 16/04/2021 à 16:40, Christophe Leroy a écrit :
Le 16/04/2021 à 15:00, Steven Price a écrit :
On 16/04/2021 12:08, Christophe Leroy wrote:
Le 16/04/2021 à 12:51, Steven Price a écrit :
On 16/04/2021 11:38, Christophe Leroy wrote:
Le 16/04/2021 à 11:28, Steven Price a écrit
Le 16/04/2021 à 15:00, Steven Price a écrit :
On 16/04/2021 12:08, Christophe Leroy wrote:
Le 16/04/2021 à 12:51, Steven Price a écrit :
On 16/04/2021 11:38, Christophe Leroy wrote:
Le 16/04/2021 à 11:28, Steven Price a écrit :
On 15/04/2021 18:18, Christophe Leroy wrote:
In order
Le 16/04/2021 à 12:51, Steven Price a écrit :
On 16/04/2021 11:38, Christophe Leroy wrote:
Le 16/04/2021 à 11:28, Steven Price a écrit :
On 15/04/2021 18:18, Christophe Leroy wrote:
In order to support large pages on powerpc, notepage()
needs to know the page size of the page.
Add
Le 16/04/2021 à 11:28, Steven Price a écrit :
On 15/04/2021 18:18, Christophe Leroy wrote:
In order to support large pages on powerpc, notepage()
needs to know the page size of the page.
Add a page_size argument to notepage().
Signed-off-by: Christophe Leroy
---
arch/arm64/mm/ptdump.c
Le 16/04/2021 à 08:57, Daniel Axtens a écrit :
Hi Jiapeng,
Fix the following clang warning:
You are not fixing a warning, you are removing a function in order to fix a
warning ...
drivers/soc/fsl/qe/qe_ic.c:234:29: warning: unused function
'qe_ic_from_irq' [-Wunused-function].
Would
immediately and delete it!
Le 16/04/2021 à 08:08, Christophe Leroy a écrit :
Hi,
This mail is unreadable.
Please send your patch as raw text mail, not as attached file.
Thanks
Christophe
Le 16/04/2021 à 05:12, 韩大鹏(Han Dapeng) a écrit
Hi,
This mail is unreadable.
Please send your patch as raw text mail, not as attached file.
Thanks
Christophe
Le 16/04/2021 à 05:12, 韩大鹏(Han Dapeng) a écrit :
*OPPO*
*
*
Le 16/04/2021 à 00:43, Daniel Axtens a écrit :
Hi Christophe,
Pagewalk ignores hugepd entries and walk down the tables
as if it was traditionnal entries, leading to crazy result.
Add walk_hugepd_range() and use it to walk hugepage tables.
Signed-off-by: Christophe Leroy
---
mm
Hi Daniel,
Le 16/04/2021 à 01:29, Daniel Axtens a écrit :
Hi Christophe,
Which hugepd, page table entries can be at any level
and can be of any size.
Add support for them.
Signed-off-by: Christophe Leroy
---
mm/ptdump.c | 17 +++--
1 file changed, 15 insertions(+), 2
Le 16/04/2021 à 01:12, Daniel Axtens a écrit :
Hi Christophe,
static void note_page(struct ptdump_state *pt_st, unsigned long addr, int
level,
- u64 val)
+ u64 val, unsigned long page_size)
Compilers can warn about unused parameters at -Wextra
In order to support large pages on powerpc, notepage()
needs to know the page size of the page.
Add a page_size argument to notepage().
Signed-off-by: Christophe Leroy
---
arch/arm64/mm/ptdump.c | 2 +-
arch/riscv/mm/ptdump.c | 2 +-
arch/s390/mm/dump_pagetables.c | 3
for reading PTEs. Use ptep_get()
instead. See commit 481e980a7c19 ("mm: Allow arches to provide ptep_get()")
and commit c0e1c8c22beb ("powerpc/8xx: Provide ptep_get() with 16k pages")
for details.
Fixes: 30d621f6723b ("mm: add generic ptdump")
Cc: Steven Price
Signed-off
Which hugepd, page table entries can be at any level
and can be of any size.
Add support for them.
Signed-off-by: Christophe Leroy
---
mm/ptdump.c | 17 +++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/mm/ptdump.c b/mm/ptdump.c
index 61cd16afb1c8..6efdb8c15a7d
This patch converts powerpc to the generic PTDUMP implementation.
Signed-off-by: Christophe Leroy
---
arch/powerpc/Kconfig | 2 +
arch/powerpc/Kconfig.debug| 30 --
arch/powerpc/mm/Makefile | 2 +-
arch/powerpc/mm/mmu_decl.h| 2 +-
arch/powerpc
Pagewalk ignores hugepd entries and walk down the tables
as if it was traditionnal entries, leading to crazy result.
Add walk_hugepd_range() and use it to walk hugepage tables.
Signed-off-by: Christophe Leroy
---
mm/pagewalk.c | 54 +--
1 file
This series converts powerpc to generic PTDUMP.
For that, we first need to add missing hugepd support
to pagewalk and ptdump.
Christophe Leroy (5):
mm: pagewalk: Fix walk for hugepage tables
mm: ptdump: Fix build failure
mm: ptdump: Provide page size to notepage()
mm: ptdump: Support
Hi Nick,
Le 17/03/2021 à 07:24, Nicholas Piggin a écrit :
This reduces TLB misses by nearly 30x on a `git diff` workload on a
2-node POWER9 (59,800 -> 2,100) and reduces CPU cycles by 0.54%, due
to vfs hashes being allocated with 2MB pages.
Cc: linuxppc-...@lists.ozlabs.org
Acked-by: Michael
Le 15/04/2021 à 12:08, Christophe Leroy a écrit :
Le 15/04/2021 à 12:07, Christophe Leroy a écrit :
Le 15/04/2021 à 11:58, Stephen Rothwell a écrit :
Hi all,
On Thu, 15 Apr 2021 19:44:17 +1000 Stephen Rothwell
wrote:
Today's linux-next merge of the akpm-current tree got a conflict
Le 15/04/2021 à 12:07, Christophe Leroy a écrit :
Le 15/04/2021 à 11:58, Stephen Rothwell a écrit :
Hi all,
On Thu, 15 Apr 2021 19:44:17 +1000 Stephen Rothwell
wrote:
Today's linux-next merge of the akpm-current tree got a conflict in:
arch/powerpc/kernel/module.c
between commit
Le 15/04/2021 à 11:58, Stephen Rothwell a écrit :
Hi all,
On Thu, 15 Apr 2021 19:44:17 +1000 Stephen Rothwell
wrote:
Today's linux-next merge of the akpm-current tree got a conflict in:
arch/powerpc/kernel/module.c
between commit:
2ec13df16704 ("powerpc/modules: Load modules
for reading PTEs. Use ptep_get()
instead. See commit 481e980a7c19 ("mm: Allow arches to provide ptep_get()")
and commit c0e1c8c22beb ("powerpc/8xx: Provide ptep_get() with 16k pages")
for details.
Fixes: 30d621f6723b ("mm: add generic ptdump")
Cc: Steven Price
Signed-off
to
atomic_fetch_add_unless() which now handles immediate operands.
Signed-off-by: Christophe Leroy
---
v2: New
---
arch/powerpc/include/asm/atomic.h | 95 ---
1 file changed, 95 deletions(-)
diff --git a/arch/powerpc/include/asm/atomic.h
b/arch/powerpc/include/asm/atomic.h
by approx another 8 kbytes.
Signed-off-by: Christophe Leroy
Acked-by: Segher Boessenkool
---
v2: Use "addc/addic"
---
arch/powerpc/include/asm/atomic.h | 56 +++
1 file changed, 28 insertions(+), 28 deletions(-)
diff --git a/arch/powerpc/include/asm/atomic
stwcx. r8,0,r10
c000d558: 7c e0 40 28 lwarx r7,0,r8
c000d55c: 54 e7 05 64 rlwinm r7,r7,0,21,18
c000d560: 7c e0 41 2d stwcx. r7,0,r8
On pmac32_defconfig, it reduces the text by approx 10 kbytes.
Signed-off-by: Christophe Leroy
---
v
When probe_kernel_read_inst() was created, it was to mimic
probe_kernel_read() function.
Since then, probe_kernel_read() has been renamed
copy_from_kernel_nofault().
Rename probe_kernel_read_inst() into copy_inst_from_kernel_nofault().
Signed-off-by: Christophe Leroy
---
v3
to copy_from_kernel_nofault().
Move copy_from_kernel_nofault_inst() into mm/maccess.c
Signed-off-by: Christophe Leroy
---
v2: Remove inst.o from Makefile
---
arch/powerpc/lib/Makefile | 2 +-
arch/powerpc/lib/inst.c | 26 --
arch/powerpc/mm/maccess.c | 21
with
the PPC64 part opted out via a IS_ENABLED(CONFIG_PPC64).
The only need is to add a version of ppc_inst_prefix() for PPC32.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/inst.h | 2 ++
arch/powerpc/lib/inst.c | 17 +
2 files changed, 3 insertions(+), 16 deletions
.
But on the other hand, it is not used for the time being. So remove it
for now. If one day it is really needed, we can give it a new name
more in line with today's naming, and implement it using get_user_inst()
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/inst.h | 3 ---
arch/powerpc/lib/inst.c
Le 14/04/2021 à 07:23, Aneesh Kumar K.V a écrit :
Christophe Leroy writes:
When probe_kernel_read_inst() was created, it was to mimic
probe_kernel_read() function.
Since then, probe_kernel_read() has been renamed
copy_from_kernel_nofault().
Rename probe_kernel_read_inst
Le 14/04/2021 à 14:24, Segher Boessenkool a écrit :
On Wed, Apr 14, 2021 at 12:01:21PM +1000, Nicholas Piggin wrote:
Would be nice if we could let the compiler deal with it all...
static inline unsigned long lr(unsigned long *mem)
{
unsigned long val;
/*
* This
Le 14/04/2021 à 10:58, Jisheng Zhang a écrit :
Many architectures implement the trap_init() as NOP, since there is
no such default for trap_init(), this empty stub is duplicated among
these architectures. Provide a generic but weak NOP implementation
to drop the empty stubs of trap_init() in
Le 14/04/2021 à 07:59, Anshuman Khandual a écrit :
On 4/14/21 10:52 AM, Christophe Leroy wrote:
Le 14/04/2021 à 04:54, Anshuman Khandual a écrit :
Currently most platforms define FIRST_USER_ADDRESS as 0UL duplicating the
same code all over. Instead define a new option
Le 14/04/2021 à 04:54, Anshuman Khandual a écrit :
Currently most platforms define FIRST_USER_ADDRESS as 0UL duplicating the
same code all over. Instead define a new option ARCH_HAS_FIRST_USER_ADDRESS
for those platforms which would override generic default FIRST_USER_ADDRESS
value 0UL. This
When probe_kernel_read_inst() was created, it was to mimic
probe_kernel_read() function.
Since then, probe_kernel_read() has been renamed
copy_from_kernel_nofault().
Rename probe_kernel_read_inst() into copy_from_kernel_nofault_inst().
Signed-off-by: Christophe Leroy
---
arch/powerpc/include
to copy_from_kernel_nofault().
Move copy_from_kernel_nofault_inst() into mm/maccess.c
Signed-off-by: Christophe Leroy
---
v2: Remove inst.o from Makefile
---
arch/powerpc/lib/Makefile | 2 +-
arch/powerpc/lib/inst.c | 26 --
arch/powerpc/mm/maccess.c | 21
with
the PPC64 part opted out via a IS_ENABLED(CONFIG_PPC64).
The only need is to add a version of ppc_inst_prefix() for PPC32.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/inst.h | 2 ++
arch/powerpc/lib/inst.c | 17 +
2 files changed, 3 insertions(+), 16 deletions
.
But on the other hand, it is not used for the time being. So remove it
for now. If one day it is really needed, we can give it a new name
more in line with today's naming, and implement it using get_user_inst()
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/inst.h | 3 ---
arch/powerpc/lib/inst.c
a branch in the likely path in addition to the trap.
We've got some WARN_ON() in .softirqentry.text section so it needs
to be added in the OTHER_TEXT_SECTIONS in modpost.c
Signed-off-by: Christophe Leroy
---
v2: Fix build failure when CONFIG_BUG is not selected.
---
arch/powerpc/include/asm/b
twnei r0,0
28: 69 6b 80 00 xorir11,r11,32768
2c: 55 6b 8f fe rlwinm r11,r11,17,31,31
30: 0f 0b 00 00 twnei r11,0
34: 7d 8c 42 e6 mftbr12
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/bug.h | 9 ++-
to
atomic_fetch_add_unless() which now handles immediate operands.
Signed-off-by: Christophe Leroy
---
v2: New
---
arch/powerpc/include/asm/atomic.h | 95 ---
1 file changed, 95 deletions(-)
diff --git a/arch/powerpc/include/asm/atomic.h
b/arch/powerpc/include/asm/atomic.h
000d55c: 54 e7 05 64 rlwinm r7,r7,0,21,18
c000d560: 7c e0 41 2d stwcx. r7,0,r8
On pmac32_defconfig, it reduces the text by approx 10 kbytes.
Signed-off-by: Christophe Leroy
---
v2:
- Use "n" instead of "i" as constraint for the rlwinm mask
- Improv
by approx another 8 kbytes.
Signed-off-by: Christophe Leroy
Acked-by: Segher Boessenkool
---
v2: Use "addc/addic"
---
arch/powerpc/include/asm/atomic.h | 56 +++
1 file changed, 28 insertions(+), 28 deletions(-)
diff --git a/arch/powerpc/include/asm/atomic
Le 13/04/2021 à 00:08, Segher Boessenkool a écrit :
Hi!
On Thu, Apr 08, 2021 at 03:33:45PM +, Christophe Leroy wrote:
+#define ATOMIC_OP(op, asm_op, dot, sign) \
static __inline__ void atomic_##op(int a, atomic_t *v
Le 12/04/2021 à 23:54, Segher Boessenkool a écrit :
Hi!
On Thu, Apr 08, 2021 at 03:33:44PM +, Christophe Leroy wrote:
For clear bits, on 32 bits 'rlwinm' can be used instead or 'andc' for
when all bits to be cleared are consecutive.
Also on 64-bits, as long as both the top and bottom
a branch in the likely path in addition to the trap.
We've got some WARN_ON() in .softirqentry.text section so it needs
to be added in the OTHER_TEXT_SECTIONS in modpost.c
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/book3s/64/kup.h | 2 +-
arch/powerpc/incl
twnei r0,0
28: 69 6b 80 00 xorir11,r11,32768
2c: 55 6b 8f fe rlwinm r11,r11,17,31,31
30: 0f 0b 00 00 twnei r11,0
34: 7d 8c 42 e6 mftbr12
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/bug.h | 9 ++-
of memory to allocate for the EBPF code, so
assume the 4 instructions sequence is required, so that enough memory
is allocated.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/ppc-opcode.h | 1 +
arch/powerpc/net/bpf_jit.h| 3 +++
arch/powerpc/net/bpf_jit_comp32.c
Re-implement BPF_ALU64 | BPF_{LSH/RSH/ARSH} | BPF_X with branchless
implementation copied from misc_32.S.
Signed-off-by: Christophe Leroy
---
arch/powerpc/net/bpf_jit_comp32.c | 39 +++
1 file changed, 19 insertions(+), 20 deletions(-)
diff --git a/arch/powerpc/net
Replace <<== by <<=
Signed-off-by: Christophe Leroy
---
arch/powerpc/net/bpf_jit_comp32.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/net/bpf_jit_comp32.c
b/arch/powerpc/net/bpf_jit_comp32.c
index 003843273b43..ca6fe1583460 100644
--- a/arch
to copy_from_kernel_nofault().
Move copy_from_kernel_nofault_inst() into mm/maccess.c
Signed-off-by: Christophe Leroy
---
arch/powerpc/lib/inst.c | 26 --
arch/powerpc/mm/maccess.c | 21 +
2 files changed, 21 insertions(+), 26 deletions(-)
delete mode
When probe_kernel_read_inst() was created, it was to mimic
probe_kernel_read() function.
Since then, probe_kernel_read() has been renamed
copy_from_kernel_nofault().
Rename probe_kernel_read_inst() into copy_from_kernel_nofault_inst().
Signed-off-by: Christophe Leroy
---
arch/powerpc/include
with
the PPC64 part opted out via a IS_ENABLED(CONFIG_PPC64).
The only need is to add a version of ppc_inst_prefix() for PPC32.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/inst.h | 2 ++
arch/powerpc/lib/inst.c | 17 +
2 files changed, 3 insertions(+), 16 deletions
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