replace redundant code in __hash_page_huge() with helper
functions pte_get_hash_gslot() and pte_set_hash_slot()
Signed-off-by: Ram Pai
---
arch/powerpc/mm/hugetlbpage-hash64.c | 24
1 files changed, 4 insertions(+), 20 deletions(-)
diff --git a/arch/powerpc/mm
The H_PAGE_F_SECOND,H_PAGE_F_GIX are not in the 64K main-PTE.
capture these changes in the dump pte report.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/mm/dump_linuxpagetables.c |3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/arch/powe
The H_PAGE_F_SECOND,H_PAGE_F_GIX are not in the 64K main-PTE.
capture these changes in the dump pte report.
Signed-off-by: Ram Pai
---
arch/powerpc/mm/dump_linuxpagetables.c |3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/mm/dump_linuxpagetables.c
b/arch
replace redundant code in __hash_page_4K() with helper
functions pte_get_hash_gslot() and pte_set_hash_slot()
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/mm/hash64_64k.c | 34 +-
1 files changed, 9 insertions(+), 25 deletions(-)
diff
replace redundant code in __hash_page_4K() with helper
functions pte_get_hash_gslot() and pte_set_hash_slot()
Signed-off-by: Ram Pai
---
arch/powerpc/mm/hash64_64k.c | 34 +-
1 files changed, 9 insertions(+), 25 deletions(-)
diff --git a/arch/powerpc/mm
replace redundant code with helper functions
pte_get_hash_gslot() and pte_set_hash_slot()
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/mm/hash64_4k.c | 14 ++
1 files changed, 6 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/mm/hash64_4k.c b/arch/p
replace redundant code with helper functions
pte_get_hash_gslot() and pte_set_hash_slot()
Signed-off-by: Ram Pai
---
arch/powerpc/mm/hash64_4k.c | 14 ++
1 files changed, 6 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/mm/hash64_4k.c b/arch/powerpc/mm/hash64_4k.c
index
Currently only 4bits are allocated in the vma flags to hold 16
keys. This is sufficient for x86. PowerPC supports 32 keys,
which needs 5bits. This patch allocates an additional bit.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
fs/proc/task_mmu.c |6 --
include/linux/mm.h
Currently only 4bits are allocated in the vma flags to hold 16
keys. This is sufficient for x86. PowerPC supports 32 keys,
which needs 5bits. This patch allocates an additional bit.
Signed-off-by: Ram Pai
---
fs/proc/task_mmu.c |6 --
include/linux/mm.h | 20
replace redundant code in flush_hash_page() with helper function
pte_get_hash_gslot().
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/mm/hash_utils_64.c | 13 -
1 files changed, 4 insertions(+), 9 deletions(-)
diff --git a/arch/powerpc/mm/hash_utils_64.c
replace redundant code in flush_hash_page() with helper function
pte_get_hash_gslot().
Signed-off-by: Ram Pai
---
arch/powerpc/mm/hash_utils_64.c | 13 -
1 files changed, 4 insertions(+), 9 deletions(-)
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64
Implements helper functions to read and write the key related
registers; AMR, IAMR, UAMOR.
AMR register tracks the read,write permission of a key
IAMR register tracks the execute permission of a key
UAMOR register enables and disables a key
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
Implements helper functions to read and write the key related
registers; AMR, IAMR, UAMOR.
AMR register tracks the read,write permission of a key
IAMR register tracks the execute permission of a key
UAMOR register enables and disables a key
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm
Finally this patch provides the ability for a process to
allocate and free a protection key.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/systbl.h |2 ++
arch/powerpc/include/asm/unistd.h |4 +---
arch/powerpc/include/uapi/asm/unistd.h |2
Finally this patch provides the ability for a process to
allocate and free a protection key.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/systbl.h |2 ++
arch/powerpc/include/asm/unistd.h |4 +---
arch/powerpc/include/uapi/asm/unistd.h |2 ++
3 files changed, 5
to be available.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/book3s/64/mmu.h |9 +++
arch/powerpc/include/asm/mmu_context.h |1 +
arch/powerpc/include/asm/pkeys.h | 81 --
arch/powerpc/mm/mmu_context_book3s64.c
to be available.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/book3s/64/mmu.h |9 +++
arch/powerpc/include/asm/mmu_context.h |1 +
arch/powerpc/include/asm/pkeys.h | 81 --
arch/powerpc/mm/mmu_context_book3s64.c |2 +
4 files changed
cleanup the bits corresponding to a key in the AMR, and IAMR
register, when the key is newly allocated/activated or is freed.
We dont want some residual bits cause the hardware enforce
unintended behavior when the key is activated or freed.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
cleanup the bits corresponding to a key in the AMR, and IAMR
register, when the key is newly allocated/activated or is freed.
We dont want some residual bits cause the hardware enforce
unintended behavior when the key is activated or freed.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm
Store and restore the AMR, IAMR and UMOR register state of the task
before scheduling out and after scheduling in, respectively.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/processor.h |5 +
arch/powerpc/kernel/process.c| 18 +++
This patch provides the detailed implementation for
a user to allocate a key and enable it in the hardware.
It provides the plumbing, but it cannot be used till
the system call is implemented. The next patch will
do so.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/inclu
Store and restore the AMR, IAMR and UMOR register state of the task
before scheduling out and after scheduling in, respectively.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/processor.h |5 +
arch/powerpc/kernel/process.c| 18 ++
2 files changed, 23
This patch provides the detailed implementation for
a user to allocate a key and enable it in the hardware.
It provides the plumbing, but it cannot be used till
the system call is implemented. The next patch will
do so.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/pkeys.h | 10
This patch provides the implementation of execute-only pkey.
The architecture-independent expects the ability to create
and manage a special key which has execute-only permission.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/book3s/64/mmu.h |1 +
arch/p
This patch provides the implementation of execute-only pkey.
The architecture-independent expects the ability to create
and manage a special key which has execute-only permission.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/book3s/64/mmu.h |1 +
arch/powerpc/include/asm/pkeys.h
-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/book3s/64/pgtable.h | 20 +++-
arch/powerpc/include/asm/mman.h |8
arch/powerpc/include/asm/pkeys.h | 12
3 files changed, 39 insertions(+), 1 deletions(-)
diff
arch-independent code expects the arch to map
a pkey into the vma's protection bit setting.
The patch provides that ability.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/mman.h |8 +++-
arch/powerpc/include/asm/pkeys.h | 18 +++---
2
-by: Ram Pai
---
arch/powerpc/include/asm/book3s/64/pgtable.h | 20 +++-
arch/powerpc/include/asm/mman.h |8
arch/powerpc/include/asm/pkeys.h | 12
3 files changed, 39 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc
arch-independent code expects the arch to map
a pkey into the vma's protection bit setting.
The patch provides that ability.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/mman.h |8 +++-
arch/powerpc/include/asm/pkeys.h | 18 +++---
2 files changed, 22 insertions
Patch provides the ability for a process to
associate a pkey with a address range.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/systbl.h |1 +
arch/powerpc/include/asm/unistd.h |4 +---
arch/powerpc/include/uapi/asm/unistd.h |1 +
3
helper function that checks if the read/write/execute is allowed
on the pte.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/book3s/64/pgtable.h |4 +++
arch/powerpc/include/asm/pkeys.h | 12 +
arch/powerpc/mm/p
Patch provides the ability for a process to
associate a pkey with a address range.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/systbl.h |1 +
arch/powerpc/include/asm/unistd.h |4 +---
arch/powerpc/include/uapi/asm/unistd.h |1 +
3 files changed, 3 insertions(+), 3
helper function that checks if the read/write/execute is allowed
on the pte.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/book3s/64/pgtable.h |4 +++
arch/powerpc/include/asm/pkeys.h | 12 +
arch/powerpc/mm/pkeys.c | 33
Make sure that the kernel does not access user pages without
checking their key-protection.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/book3s/64/pgtable.h | 14 ++
1 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/i
Make sure that the kernel does not access user pages without
checking their key-protection.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/book3s/64/pgtable.h | 14 ++
1 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h
This patch provides the implementation for
arch_vma_access_permitted(). Returns true if the
requested access is allowed by pkey associated with the
vma.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/mmu_context.h |5 +++-
arch/powerpc/mm/p
Replace the magic number used to check for DSI exception
with a meaningful value.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/reg.h |7 ++-
arch/powerpc/kernel/exceptions-64s.S |2 +-
2 files changed, 7 insertions(+), 2 deletions(-)
diff
This patch provides the implementation for
arch_vma_access_permitted(). Returns true if the
requested access is allowed by pkey associated with the
vma.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/mmu_context.h |5 +++-
arch/powerpc/mm/pkeys.c| 43
Replace the magic number used to check for DSI exception
with a meaningful value.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/reg.h |7 ++-
arch/powerpc/kernel/exceptions-64s.S |2 +-
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/include
Capture the protection key that got violated in paca.
This value will be later used to inform the signal
handler.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/paca.h |1 +
arch/powerpc/kernel/asm-offsets.c |1 +
arch/powerpc/mm/fault.c
capture AMR register contents, and save it in paca
whenever a pkey violation is detected.
This value will be needed to deliver pkey-violation
signal to the task.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/paca.h |3 +++
arch/powerpc/kernel/asm-off
Capture the protection key that got violated in paca.
This value will be later used to inform the signal
handler.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/paca.h |1 +
arch/powerpc/kernel/asm-offsets.c |1 +
arch/powerpc/mm/fault.c |8
3 files changed
capture AMR register contents, and save it in paca
whenever a pkey violation is detected.
This value will be needed to deliver pkey-violation
signal to the task.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/paca.h |3 +++
arch/powerpc/kernel/asm-offsets.c |5 +
arch
arch_pkeys_enabled() returns true if the cpu
supports protection key, and the kernel has it
enabled.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/pkeys.h |5 +
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/pke
arch_pkeys_enabled() returns true if the cpu
supports protection key, and the kernel has it
enabled.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/pkeys.h |5 +
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/pkeys.h b/arch/powerpc/include
Only the architecture knows if it supports protection keys.
Hence introducing arch_pkeys_enabled().
This function is needed by arch neutral code.
One use case is -- to determine if the
protection key needs to be displayed in smaps.
Signed-off-by: Ram Pai <linux...@us.ibm.
Only the architecture knows if it supports protection keys.
Hence introducing arch_pkeys_enabled().
This function is needed by arch neutral code.
One use case is -- to determine if the
protection key needs to be displayed in smaps.
Signed-off-by: Ram Pai
---
include/linux/pkeys.h
arch_pkeys_enabled() returns true if the cpu
supports X86_FEATURE_OSPKE.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/x86/include/asm/pkeys.h |1 +
arch/x86/kernel/fpu/xstate.c |5 +
2 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/p
support pkeys.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
fs/proc/task_mmu.c |9 -
1 files changed, 4 insertions(+), 5 deletions(-)
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index e5710bc..d2b3e75 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -16,6
arch_pkeys_enabled() returns true if the cpu
supports X86_FEATURE_OSPKE.
Signed-off-by: Ram Pai
---
arch/x86/include/asm/pkeys.h |1 +
arch/x86/kernel/fpu/xstate.c |5 +
2 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/pkeys.h b/arch/x86/include
support pkeys.
Signed-off-by: Ram Pai
---
fs/proc/task_mmu.c |9 -
1 files changed, 4 insertions(+), 5 deletions(-)
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index e5710bc..d2b3e75 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -16,6 +16,7 @@
#include
#include
arch_show_smap() function is not needed anymore.
Delete it.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/x86/kernel/setup.c |8
1 files changed, 0 insertions(+), 8 deletions(-)
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index f818236..5efe4c3
arch_show_smap() function is not needed anymore.
Delete it.
Signed-off-by: Ram Pai
---
arch/x86/kernel/setup.c |8
1 files changed, 0 insertions(+), 8 deletions(-)
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index f818236..5efe4c3 100644
--- a/arch/x86/kernel
some pkru references are named to pkey_reg
and some prku references are renamed to pkey
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/pkey-helpers.h| 85 +-
tools/testing/selftests/vm/protection_keys.c | 227 ++
2 files c
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/Makefile |1 +
tools/testing/selftests/vm/pkey-helpers.h | 219
tools/testing/selftests/vm/protection_keys.c | 1395 +
tools/testing/selftests/x86/Makefile
some pkru references are named to pkey_reg
and some prku references are renamed to pkey
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/pkey-helpers.h| 85 +-
tools/testing/selftests/vm/protection_keys.c | 227 ++
2 files changed, 164 insertions
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/Makefile |1 +
tools/testing/selftests/vm/pkey-helpers.h | 219
tools/testing/selftests/vm/protection_keys.c | 1395 +
tools/testing/selftests/x86/Makefile |2 +-
tools/testing
This is in preparation to accomadate a differing size register
across architectures.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/pkey-helpers.h| 27 +-
tools/testing/selftests/vm/protection_keys.c | 75 ++
2 files c
This is in preparation to accomadate a differing size register
across architectures.
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/pkey-helpers.h| 27 +-
tools/testing/selftests/vm/protection_keys.c | 75 ++
2 files changed, 54 insertions(+), 48
When a key is freed, the key is no more effective.
Clear the bits corresponding to the pkey in the shadow
register. Otherwise it will carry some spurious bits
which can trigger false-positive asserts.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selfte
Moved all the generic definition and helper functions to the
header file
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/pkey-helpers.h| 62 +++--
tools/testing/selftests/vm/protection_keys.c | 54 --
2 files chang
helper functions to handler shadow pkey register
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/pkey-helpers.h| 27
tools/testing/selftests/vm/protection_keys.c | 34 -
2 files changed, 49 insertions(
helper functions to handler shadow pkey register
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/pkey-helpers.h| 27
tools/testing/selftests/vm/protection_keys.c | 34 -
2 files changed, 49 insertions(+), 12 deletions(-)
diff --git
When a key is freed, the key is no more effective.
Clear the bits corresponding to the pkey in the shadow
register. Otherwise it will carry some spurious bits
which can trigger false-positive asserts.
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/protection_keys.c |3 +++
1
Moved all the generic definition and helper functions to the
header file
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/pkey-helpers.h| 62 +++--
tools/testing/selftests/vm/protection_keys.c | 54 --
2 files changed, 57 insertions(+), 59
open_hugepage_file() <- opens the huge page file
get_start_key() <-- provides the first non-reserved key.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/pkey-helpers.h| 11 +++
tools/testing/selftests/vm/protection_keys.c |6 +++---
2 f
If the flag is 0, no bits will be set. Hence we cant expect
the resulting bitmap to have a higher value than what it
was earlier.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/protection_keys.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff
If the flag is 0, no bits will be set. Hence we cant expect
the resulting bitmap to have a higher value than what it
was earlier.
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/protection_keys.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/tools/testing
open_hugepage_file() <- opens the huge page file
get_start_key() <-- provides the first non-reserved key.
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/pkey-helpers.h| 11 +++
tools/testing/selftests/vm/protection_keys.c |6 +++---
2 files changed, 14 insertions
alloc_random_pkey() was allocating the same pkey every time.
Not all pkeys were geting tested. fixed it.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/protection_keys.c | 10 +++---
1 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/tools/t
cleanup the code to satisfy coding styles.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/protection_keys.c | 81 ++
1 files changed, 43 insertions(+), 38 deletions(-)
diff --git a/tools/testing/selftests/vm/protection_keys.c
b
alloc_random_pkey() was allocating the same pkey every time.
Not all pkeys were geting tested. fixed it.
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/protection_keys.c | 10 +++---
1 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/tools/testing/selftests/vm
cleanup the code to satisfy coding styles.
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/protection_keys.c | 81 ++
1 files changed, 43 insertions(+), 38 deletions(-)
diff --git a/tools/testing/selftests/vm/protection_keys.c
b/tools/testing/selftests/vm
detect access-violation on a page to which access-disabled
key is associated much after the page is mapped.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/protection_keys.c | 19 +++
1 files changed, 19 insertions(+), 0 deletions(-)
diff
detect access-violation on a page to which access-disabled
key is associated much after the page is mapped.
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/protection_keys.c | 19 +++
1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/tools/testing/selftests
detect write-violation on a page to which write-disabled
key is associated much after the page is mapped.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/protection_keys.c | 12
1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a
The maximum number of keys that can be allocated has to
take into consideration that some keys are reserved by
the architecture of specific purpose and cannot be allocated.
Fix the assertion in test_pkey_alloc_exhaust()
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selfte
The maximum number of keys that can be allocated has to
take into consideration that some keys are reserved by
the architecture of specific purpose and cannot be allocated.
Fix the assertion in test_pkey_alloc_exhaust()
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/protection_keys.c
detect write-violation on a page to which write-disabled
key is associated much after the page is mapped.
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/protection_keys.c | 12
1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/tools/testing/selftests/vm
introduce a new allocator that allocates 4k hardware-pages to back
64k linux-page. This allocator is only applicable on powerpc.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/protection_keys.c | 29 ++
1 files changed, 29 insertions
a access-denied key should not trigger any key violation
after the key has been freed.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/protection_keys.c | 25 +
1 files changed, 25 insertions(+), 0 deletions(-)
diff --git a/tools/t
introduce a new allocator that allocates 4k hardware-pages to back
64k linux-page. This allocator is only applicable on powerpc.
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/protection_keys.c | 29 ++
1 files changed, 29 insertions(+), 0 deletions(-)
diff
a access-denied key should not trigger any key violation
after the key has been freed.
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/protection_keys.c | 25 +
1 files changed, 25 insertions(+), 0 deletions(-)
diff --git a/tools/testing/selftests/vm
Add documentation updates that capture PowerPC specific changes.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
Documentation/vm/protection-keys.txt | 90 -
1 files changed, 65 insertions(+), 25 deletions(-)
diff --git a/Documentation/vm/protection-ke
Add documentation updates that capture PowerPC specific changes.
Signed-off-by: Ram Pai
---
Documentation/vm/protection-keys.txt | 90 -
1 files changed, 65 insertions(+), 25 deletions(-)
diff --git a/Documentation/vm/protection-keys.txt
b/Documentation/vm
a write-denied key should not trigger any key violation
after the key has been freed.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/protection_keys.c | 18 ++
1 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/tools/testing/sel
a write-denied key should not trigger any key violation
after the key has been freed.
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/protection_keys.c | 18 ++
1 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/tools/testing/selftests/vm/protection_keys.c
instead of clearing the bits, pkey_disable_clear() was setting
the bits. Fixed it.
Also fixed a wrong assertion in that function. When bits are
cleared, the resulting bit value will be less than the original.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selfte
Since PowerPC and Intel both support memory protection keys, moving
the documenation to arch-neutral directory.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
Documentation/vm/protection-keys.txt | 85 +
Documentation/x86/protection-keys.txt
throughout
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/protection_keys.c |4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/vm/protection_keys.c
b/tools/testing/selftests/vm/protection_keys.c
index 20bab6d..f
detect write-violation on a page to which access-disabled
key is associated much after the page is mapped.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/protection_keys.c | 13 +
1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a
instead of clearing the bits, pkey_disable_clear() was setting
the bits. Fixed it.
Also fixed a wrong assertion in that function. When bits are
cleared, the resulting bit value will be less than the original.
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/protection_keys.c |4
Since PowerPC and Intel both support memory protection keys, moving
the documenation to arch-neutral directory.
Signed-off-by: Ram Pai
---
Documentation/vm/protection-keys.txt | 85 +
Documentation/x86/protection-keys.txt | 85
throughout
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/protection_keys.c |4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/vm/protection_keys.c
b/tools/testing/selftests/vm/protection_keys.c
index 20bab6d..f21e177 100644
--- a/tools
detect write-violation on a page to which access-disabled
key is associated much after the page is mapped.
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/protection_keys.c | 13 +
1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/tools/testing/selftests/vm
Introduce powerpc implementation for the various
abstactions.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/pkey-helpers.h| 97 +++--
tools/testing/selftests/vm/protection_keys.c | 33 +
2 files changed, 107 insertions(
Introduce powerpc implementation for the various
abstactions.
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/pkey-helpers.h| 97 +++--
tools/testing/selftests/vm/protection_keys.c | 33 +
2 files changed, 107 insertions(+), 23 deletions(-)
diff --git
get_pte_pkey() helper returns the pkey associated with
a address corresponding to a given mm_struct.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/book3s/64/mmu-hash.h |5 +
arch/powerpc/mm/hash_utils_64.c | 25 ++
in such a case.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/reg.h |3 ++-
arch/powerpc/mm/fault.c| 21 +
2 files changed, 23 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index e
get_pte_pkey() helper returns the pkey associated with
a address corresponding to a given mm_struct.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/book3s/64/mmu-hash.h |5 +
arch/powerpc/mm/hash_utils_64.c | 25 +
2 files changed, 30
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