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 |2 +
arch/powerpc/include/asm/pkeys.h |9 +++
arch/powerpc/mm/pkeys.c | 31
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
The value of the AMR register at the time of exception
is made available in gp_regs[PT_AMR] of the siginfo.
The value of the pkey, whose protection got violated,
is made available in si_pkey field of the siginfo structure.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/i
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 | 28 +
2
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 | 28 +
2 files changed, 33
The value of the AMR register at the time of exception
is made available in gp_regs[PT_AMR] of the siginfo.
The value of the pkey, whose protection got violated,
is made available in si_pkey field of the siginfo structure.
Signed-off-by: Ram Pai
---
arch/powerpc/include/uapi/asm/ptrace.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
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| 40
checkpatch.pl happy
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/pkey-helpers.h| 230 +--
tools/testing/selftests/vm/protection_keys.c | 567 +++---
2 files changed, 518 insertions(+), 279 deletions(-)
diff --git a/tools/t
checkpatch.pl happy
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/pkey-helpers.h| 230 +--
tools/testing/selftests/vm/protection_keys.c | 567 +++---
2 files changed, 518 insertions(+), 279 deletions(-)
diff --git a/tools/testing/selftests/vm/pkey-helpers.h
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
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
Display the pkey number associated with the vma in smaps of a task.
The key will be seen as below:
ProtectionKey: 0
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/kernel/setup_64.c |8
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/
Capture the protection key that got violated in paca.
This value will be used by 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
Display the pkey number associated with the vma in smaps of a task.
The key will be seen as below:
ProtectionKey: 0
Signed-off-by: Ram Pai
---
arch/powerpc/kernel/setup_64.c |8
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/kernel/setup_64.c b/arch
Capture the protection key that got violated in paca.
This value will be used by 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 |3 +++
3 files changed, 5
in such a case.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/reg.h |2 +-
arch/powerpc/mm/fault.c| 21 +
2 files changed, 22 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index b
Add documentation updates that capture PowerPC specific changes.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
Documentation/vm/protection-keys.txt | 85 ++
1 files changed, 65 insertions(+), 20 deletions(-)
diff --git a/Documentation/vm/protection-ke
in such a case.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/reg.h |2 +-
arch/powerpc/mm/fault.c| 21 +
2 files changed, 22 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index ba110dd..6e2a860 100644
Add documentation updates that capture PowerPC specific changes.
Signed-off-by: Ram Pai
---
Documentation/vm/protection-keys.txt | 85 ++
1 files changed, 65 insertions(+), 20 deletions(-)
diff --git a/Documentation/vm/protection-keys.txt
b/Documentation/vm
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
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
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
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
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 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
this. Hence the next patch will add
ability in x86 to return error if PKEY_DISABLE_EXECUTE is
specified.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
include/uapi/asm-generic/mman-common.h |4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/include/uapi/asm-generi
this. Hence the next patch will add
ability in x86 to return error if PKEY_DISABLE_EXECUTE is
specified.
Signed-off-by: Ram Pai
---
include/uapi/asm-generic/mman-common.h |4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/include/uapi/asm-generic/mman-common.h
b/include
Map the PTE protection key bits to the HPTE key protection bits,
while creating HPTE entries.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/book3s/64/mmu-hash.h |5 +
arch/powerpc/include/asm/pkeys.h |9 +
arch/powe
Map the PTE protection key bits to the HPTE key protection bits,
while creating HPTE entries.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/book3s/64/mmu-hash.h |5 +
arch/powerpc/include/asm/pkeys.h |9 +
arch/powerpc/mm/hash_utils_64.c
Introduce pte_get_hash_gslot()() which returns the slot number of the
HPTE in the global hash table.
This function will come in handy as we work towards re-arranging the
PTE bits in the later patches.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/book3s/64/
Introduce pte_get_hash_gslot()() which returns the slot number of the
HPTE in the global hash table.
This function will come in handy as we work towards re-arranging the
PTE bits in the later patches.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/book3s/64/hash.h |3 +++
arch/powerpc
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
replace redundant code in __hash_page_huge() with helper
functions pte_get_hash_gslot() and pte_set_hash_slot()
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/mm/hugetlbpage-hash64.c | 24
1 files changed, 4 insertions(+), 20 deletions(-)
diff
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_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
if the pte was not yet Hashed
with a hpte. Reported by Aneesh.
(3) Fixed ABI breakage caused in siginfo structure.
Reported by Anshuman.
version v1: Initial version
Ram Pai (38):
powerpc: Free up four 64K PTE bits in 4K backed HPTE pages
powerpc: Free up fo
if the pte was not yet Hashed
with a hpte. Reported by Aneesh.
(3) Fixed ABI breakage caused in siginfo structure.
Reported by Anshuman.
version v1: Initial version
Ram Pai (38):
powerpc: Free up four 64K PTE bits in 4K backed HPTE pages
powerpc: Free up fo
On Tue, Jun 27, 2017 at 08:54:07PM +0530, Aneesh Kumar K.V wrote:
>
>
> On Tuesday 27 June 2017 03:41 PM, Ram Pai wrote:
> >Pass the correct protection key value to the hash functions on
> >page fault.
> >
> >Signed-off-by: Ram Pai <linux...@us.ibm.com&g
On Tue, Jun 27, 2017 at 08:54:07PM +0530, Aneesh Kumar K.V wrote:
>
>
> On Tuesday 27 June 2017 03:41 PM, Ram Pai wrote:
> >Pass the correct protection key value to the hash functions on
> >page fault.
> >
> >Signed-off-by: Ram Pai
> >---
>
Currently there are only 4bits in the vma flags to support 16 keys
on x86. powerpc supports 32 keys, which needs 5bits. This patch
introduces an addition bit in the vma flags.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
fs/proc/task_mmu.c | 6 +-
include/linux/mm.
Currently there are only 4bits in the vma flags to support 16 keys
on x86. powerpc supports 32 keys, which needs 5bits. This patch
introduces an addition bit in the vma flags.
Signed-off-by: Ram Pai
---
fs/proc/task_mmu.c | 6 +-
include/linux/mm.h | 18 +-
2 files changed
This system call, associates the pkey with vma corresponding to
the given address range.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/mman.h| 8 ++-
arch/powerpc/include/asm/pkeys.h | 17 ++-
arch/powerpc/include/asm/systbl.h | 1 +
Prepare the hash functions to be aware of protection keys.
This key will later be used to program the HPTE.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/book3s/64/hash.h | 2 +-
arch/powerpc/include/asm/book3s/64/mmu-hash.h | 14 ++-
arch/powe
This system call, associates the pkey with vma corresponding to
the given address range.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/mman.h| 8 ++-
arch/powerpc/include/asm/pkeys.h | 17 ++-
arch/powerpc/include/asm/systbl.h | 1 +
arch/powerpc/include/asm
Prepare the hash functions to be aware of protection keys.
This key will later be used to program the HPTE.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/book3s/64/hash.h | 2 +-
arch/powerpc/include/asm/book3s/64/mmu-hash.h | 14 ++-
arch/powerpc/mm/hash64_4k.c
a key can be initialize to disable execute.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/Kconfig | 15
arch/powerpc/include/asm/book3s/64/mmu.h | 10 +++
arch/powerpc/include/asm/book3s/64/pgtable.h | 62 ++
arch/powerpc/inclu
a key can be initialize to disable execute.
Signed-off-by: Ram Pai
---
arch/powerpc/Kconfig | 15
arch/powerpc/include/asm/book3s/64/mmu.h | 10 +++
arch/powerpc/include/asm/book3s/64/pgtable.h | 62 ++
arch/powerpc/include/asm/pkeys.h | 124
Pass the correct protection key value to the hash functions on
page fault.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/pkeys.h | 11 +++
arch/powerpc/mm/hash_utils_64.c | 4
arch/powerpc/mm/mem.c| 6 ++
3 files changed, 21 inse
Pass the correct protection key value to the hash functions on
page fault.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/pkeys.h | 11 +++
arch/powerpc/mm/hash_utils_64.c | 4
arch/powerpc/mm/mem.c| 6 ++
3 files changed, 21 insertions(+)
diff --git a/arch
this. Hence the next patch will add
ability in x86 to return error if PKEY_DISABLE_EXECUTE is
specified.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
include/uapi/asm-generic/mman-common.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/uapi/asm-generi
this. Hence the next patch will add
ability in x86 to return error if PKEY_DISABLE_EXECUTE is
specified.
Signed-off-by: Ram Pai
---
include/uapi/asm-generic/mman-common.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/uapi/asm-generic/mman-common.h
b/include/uapi
The value of the AMR register at the time of exception
is made available in gp_regs[PT_AMR] of the siginfo.
The value of the pkey, whose protection got violated,
is made available in si_pkey field of the siginfo structure.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/i
Map the PTE protection key bits to the HPTE key protection bits,
while creating HPTE entries.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
Makefile | 2 +-
arch/powerpc/include/asm/book3s/64/mmu-hash.h | 5 +
arch/powerpc/include/asm/p
The value of the AMR register at the time of exception
is made available in gp_regs[PT_AMR] of the siginfo.
The value of the pkey, whose protection got violated,
is made available in si_pkey field of the siginfo structure.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/paca.h| 1
Map the PTE protection key bits to the HPTE key protection bits,
while creating HPTE entries.
Signed-off-by: Ram Pai
---
Makefile | 2 +-
arch/powerpc/include/asm/book3s/64/mmu-hash.h | 5 +
arch/powerpc/include/asm/pkeys.h | 9
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 --git
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/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 ++
2
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
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.tx
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
Add documentation updates that capture PowerPC specific changes.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
Documentation/vm/protection-keys.txt | 89
1 file changed, 69 insertions(+), 20 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 | 89
1 file changed, 69 insertions(+), 20 deletions(-)
diff --git a/Documentation/vm/protection-keys.txt
b/Documentation/vm
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
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
checkpatch.pl happy
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
tools/testing/selftests/vm/pkey-helpers.h| 230 +--
tools/testing/selftests/vm/protection_keys.c | 567 ---
2 files changed, 518 insertions(+), 279 deletions(-)
diff --git a/tools/t
checkpatch.pl happy
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/pkey-helpers.h| 230 +--
tools/testing/selftests/vm/protection_keys.c | 567 ---
2 files changed, 518 insertions(+), 279 deletions(-)
diff --git a/tools/testing/selftests/vm/pkey-helpers.h
Display the pkey number associated with the vma in smaps of a task.
The key will be seen as below:
VmFlags: rd wr mr mw me dw ac key=0
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
Documentation/filesystems/proc.txt | 3 ++-
fs/proc/task_mmu.c | 22 +++
Display the pkey number associated with the vma in smaps of a task.
The key will be seen as below:
VmFlags: rd wr mr mw me dw ac key=0
Signed-off-by: Ram Pai
---
Documentation/filesystems/proc.txt | 3 ++-
fs/proc/task_mmu.c | 22 +++---
2 files changed, 13
Handle Data and Instruction exceptions caused by memory
protection-key.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/mmu_context.h | 12 ++
arch/powerpc/include/asm/reg.h | 2 +-
arch/powerpc/mm/fault.c| 20 +
arch/powe
x86 does not support disabling execute permissions on a pkey.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/x86/kernel/fpu/xstate.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c
index c24ac1e..d582631 100644
---
Handle Data and Instruction exceptions caused by memory
protection-key.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/mmu_context.h | 12 ++
arch/powerpc/include/asm/reg.h | 2 +-
arch/powerpc/mm/fault.c| 20 +
arch/powerpc/mm/pkeys.c
x86 does not support disabling execute permissions on a pkey.
Signed-off-by: Ram Pai
---
arch/x86/kernel/fpu/xstate.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c
index c24ac1e..d582631 100644
--- a/arch/x86/kernel/fpu
correctly, and
initialization of second-part-of-the-pte was not
done correctly if the pte was not yet Hashed
with a hpte. Reported by Aneesh.
(3) Fixed ABI breakage caused in siginfo structure.
Reported by Anshuman.
version v1: Initial version
Ram Pai
correctly, and
initialization of second-part-of-the-pte was not
done correctly if the pte was not yet Hashed
with a hpte. Reported by Aneesh.
(3) Fixed ABI breakage caused in siginfo structure.
Reported by Anshuman.
version v1: Initial version
Ram Pai
On Sun, Jun 25, 2017 at 11:02:58PM -0500, Benjamin Herrenschmidt wrote:
> On Mon, 2017-06-26 at 09:03 +1000, Balbir Singh wrote:
> > On Wed, 2017-06-21 at 18:39 -0700, Ram Pai wrote:
> > > Introduce set_hidx_slot() which sets the (H_PAGE_F_SECOND|H_PAGE_F_GIX)
> > >
On Sun, Jun 25, 2017 at 11:02:58PM -0500, Benjamin Herrenschmidt wrote:
> On Mon, 2017-06-26 at 09:03 +1000, Balbir Singh wrote:
> > On Wed, 2017-06-21 at 18:39 -0700, Ram Pai wrote:
> > > Introduce set_hidx_slot() which sets the (H_PAGE_F_SECOND|H_PAGE_F_GIX)
> > >
On Mon, Jun 26, 2017 at 09:03:18AM +1000, Balbir Singh wrote:
> On Wed, 2017-06-21 at 18:39 -0700, Ram Pai wrote:
> > Introduce set_hidx_slot() which sets the (H_PAGE_F_SECOND|H_PAGE_F_GIX)
> > bits at the appropriate location in the PTE of 4K PTE. In the
> > cas
On Mon, Jun 26, 2017 at 09:03:18AM +1000, Balbir Singh wrote:
> On Wed, 2017-06-21 at 18:39 -0700, Ram Pai wrote:
> > Introduce set_hidx_slot() which sets the (H_PAGE_F_SECOND|H_PAGE_F_GIX)
> > bits at the appropriate location in the PTE of 4K PTE. In the
> > cas
On Sat, Jun 17, 2017 at 08:54:44AM +1000, Benjamin Herrenschmidt wrote:
> On Fri, 2017-06-16 at 12:15 -0700, Ram Pai wrote:
> > gp_regs size is not changed, nor is the layout. A unused field in
> > the gp_regs is used to fill in the AMR contents. Old binaries will not
>
On Sat, Jun 17, 2017 at 08:54:44AM +1000, Benjamin Herrenschmidt wrote:
> On Fri, 2017-06-16 at 12:15 -0700, Ram Pai wrote:
> > gp_regs size is not changed, nor is the layout. A unused field in
> > the gp_regs is used to fill in the AMR contents. Old binaries will not
>
On Thu, Jun 22, 2017 at 07:21:03PM +1000, Balbir Singh wrote:
> On Wed, 2017-06-21 at 18:39 -0700, Ram Pai wrote:
> > Rearrange 64K PTE bits to free up bits 3, 4, 5 and 6,
> > in the 4K backed HPTE pages. These bits continue to be used
> > for 64K backed HPT
On Thu, Jun 22, 2017 at 07:21:03PM +1000, Balbir Singh wrote:
> On Wed, 2017-06-21 at 18:39 -0700, Ram Pai wrote:
> > Rearrange 64K PTE bits to free up bits 3, 4, 5 and 6,
> > in the 4K backed HPTE pages. These bits continue to be used
> > for 64K backed HPT
On Thu, Jun 22, 2017 at 02:37:27PM +0530, Anshuman Khandual wrote:
> On 06/17/2017 09:22 AM, Ram Pai wrote:
> > Rearrange 64K PTE bits to free up bits 3, 4, 5 and 6
> > in the 4K backed hpte pages. These bits continue to be used
> > for 64K backed hpte pages in this pat
On Thu, Jun 22, 2017 at 02:37:27PM +0530, Anshuman Khandual wrote:
> On 06/17/2017 09:22 AM, Ram Pai wrote:
> > Rearrange 64K PTE bits to free up bits 3, 4, 5 and 6
> > in the 4K backed hpte pages. These bits continue to be used
> > for 64K backed hpte pages in this pat
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 file changed, 2 insertions(+), 1 deletion(-)
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 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/mm/dump_linuxpagetables.c
b/arch
replace redundant code with helper functions
get_hidx_gslot() and set_hidx_slot()
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/mm/hash64_4k.c | 14 ++
1 file changed, 6 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/mm/hash64_4k.c b/arch/powe
replace redundant code with helper functions
get_hidx_gslot() and set_hidx_slot()
Signed-off-by: Ram Pai
---
arch/powerpc/mm/hash64_4k.c | 14 ++
1 file changed, 6 insertions(+), 8 deletions(-)
diff --git a/arch/powerpc/mm/hash64_4k.c b/arch/powerpc/mm/hash64_4k.c
index 6fa450c
additional parameters to keep the prototype consistent.
This function will come in handy as we work towards re-arranging the
bits in the later patches.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/book3s/64/hash-4k.h | 7 +++
arch/powerpc/include/asm/
additional parameters to keep the prototype consistent.
This function will come in handy as we work towards re-arranging the
bits in the later patches.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/book3s/64/hash-4k.h | 7 +++
arch/powerpc/include/asm/book3s/64/hash-64k.h | 16
.
Outstanding known issue:
Calls to sys_swapcontext with a made-up context will end
up with a crap AMR if done by code who didn't know about
that register. -- Reported by Ben.
version v1: Initial version
Thanks-to: Dave Hansen, Aneesh, Paul Mackerras,
Michael Ellermen
Ram Pai
.
Outstanding known issue:
Calls to sys_swapcontext with a made-up context will end
up with a crap AMR if done by code who didn't know about
that register. -- Reported by Ben.
version v1: Initial version
Thanks-to: Dave Hansen, Aneesh, Paul Mackerras,
Michael Ellermen
Ram Pai
this. Hence the next patch will add
ability in x86 to return error is PKEY_DISABLE_EXECUTE is
specified.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
include/uapi/asm-generic/mman-common.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/uapi/asm-generi
replace redundant code in flush_hash_page() with helper functions
get_hidx_gslot() and set_hidx_slot()
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/mm/hash_utils_64.c | 13 -
1 file changed, 4 insertions(+), 9 deletions(-)
diff --git a/arch/powerpc/mm/hash_ut
replace redundant code in flush_hash_page() with helper functions
get_hidx_gslot() and set_hidx_slot()
Signed-off-by: Ram Pai
---
arch/powerpc/mm/hash_utils_64.c | 13 -
1 file changed, 4 insertions(+), 9 deletions(-)
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm
this. Hence the next patch will add
ability in x86 to return error is PKEY_DISABLE_EXECUTE is
specified.
Signed-off-by: Ram Pai
---
include/uapi/asm-generic/mman-common.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/include/uapi/asm-generic/mman-common.h
b/include/uapi
This system call, associates the pkey with PTE of all
pages covering the given address range.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/book3s/64/pgtable.h | 22 ++-
arch/powerpc/include/asm/mman.h | 14 -
arch/powerpc/include/asm/p
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