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
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 PTE of all
pages covering the given address range.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/book3s/64/pgtable.h | 22 ++-
arch/powerpc/include/asm/mman.h | 14 -
arch/powerpc/include/asm/pkeys.h | 21
structure.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/paca.h| 1 +
arch/powerpc/include/uapi/asm/ptrace.h | 3 ++-
arch/powerpc/kernel/asm-offsets.c | 5
arch/powerpc/kernel/exceptions-64s.S | 16 +--
arch/powerpc/kernel/signa
structure.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/paca.h| 1 +
arch/powerpc/include/uapi/asm/ptrace.h | 3 ++-
arch/powerpc/kernel/asm-offsets.c | 5
arch/powerpc/kernel/exceptions-64s.S | 16 +--
arch/powerpc/kernel/signal_32.c| 14
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 | 562 ---
2 files changed, 513 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 | 562 ---
2 files changed, 513 insertions(+), 279 deletions(-)
diff --git a/tools/testing/selftests/vm/pkey-helpers.h
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
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
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:
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 +++
Add documentation updates that capture PowerPC specific changes.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
Documentation/vm/protection-keys.txt | 65 +---
1 file changed, 45 insertions(+), 20 deletions(-)
diff --git a/Documentation/vm/protection-ke
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/pkeys.h | 9
arch/powerpc/include/asm/reg.h | 2 +-
arch/powerpc/mm/f
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/pkeys.h | 9
arch/powerpc/include/asm/reg.h | 2 +-
arch/powerpc/mm/fault.c| 20
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
Add documentation updates that capture PowerPC specific changes.
Signed-off-by: Ram Pai
---
Documentation/vm/protection-keys.txt | 65 +---
1 file changed, 45 insertions(+), 20 deletions(-)
diff --git a/Documentation/vm/protection-keys.txt
b/Documentation/vm
bits
can be allocated if needed in the future.
The second part of the PTE will hold
(H_PAGE_F_SECOND|H_PAGE_F_GIX) at bit 60,61,62,63.
The above PTE changes is applicable to hugetlbpages aswell.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/book3s/64/hash-64k.
bits
can be allocated if needed in the future.
The second part of the PTE will hold
(H_PAGE_F_SECOND|H_PAGE_F_GIX) at bit 60,61,62,63.
The above PTE changes is applicable to hugetlbpages aswell.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/book3s/64/hash-64k.h | 28
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
---
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
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
replace redundant code in __hash_page_4K() with helper
functions get_hidx_gslot() and set_hidx_slot()
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/mm/hash64_64k.c | 24 ++--
1 file changed, 6 insertions(+), 18 deletions(-)
diff --git a/arch/powe
replace redundant code in __hash_page_4K() with helper
functions get_hidx_gslot() and set_hidx_slot()
Signed-off-by: Ram Pai
---
arch/powerpc/mm/hash64_64k.c | 24 ++--
1 file changed, 6 insertions(+), 18 deletions(-)
diff --git a/arch/powerpc/mm/hash64_64k.c b/arch/powerpc
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 | 7 +++
arch/powerpc/mm/hash_util
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
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 | 7 +++
arch/powerpc/mm/hash_utils_64.c | 5
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
updates significantly and has the
added advantage of releasing four valuable PTE bits for other
purpose.
This idea was jointly developed by Paul Mackerras, Aneesh, Michael
Ellermen and myself.
4K PTE format remain unchanged currently.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
Con
updates significantly and has the
added advantage of releasing four valuable PTE bits for other
purpose.
This idea was jointly developed by Paul Mackerras, Aneesh, Michael
Ellermen and myself.
4K PTE format remain unchanged currently.
Signed-off-by: Ram Pai
Conflicts:
arch
Introduce get_hidx_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/hash.
Introduce get_hidx_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/mm
On Wed, Jun 21, 2017 at 12:24:34PM +0530, Aneesh Kumar K.V wrote:
> Ram Pai <linux...@us.ibm.com> writes:
>
>
>
> > diff --git a/arch/powerpc/mm/hugetlbpage-hash64.c
> > b/arch/powerpc/mm/hugetlbpage-hash64.c
> > index a84bb44..239ca86 100644
> >
On Wed, Jun 21, 2017 at 12:24:34PM +0530, Aneesh Kumar K.V wrote:
> Ram Pai writes:
>
>
>
> > diff --git a/arch/powerpc/mm/hugetlbpage-hash64.c
> > b/arch/powerpc/mm/hugetlbpage-hash64.c
> > index a84bb44..239ca86 100644
> > --- a/arch/powerpc/mm
On Wed, Jun 21, 2017 at 12:11:32PM +0530, Aneesh Kumar K.V wrote:
> Ram Pai <linux...@us.ibm.com> writes:
>
> > 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
On Wed, Jun 21, 2017 at 12:11:32PM +0530, Aneesh Kumar K.V wrote:
> Ram Pai writes:
>
> > 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 patch, but will be
On Wed, Jun 21, 2017 at 12:55:42PM +0530, Aneesh Kumar K.V wrote:
> Ram Pai <linux...@us.ibm.com> writes:
>
> > Replace the magic number used to check for DSI exception
> > with a meaningful value.
> >
> > Signed-off-by: Ram Pai <linux...@us.ibm.com>
&
On Wed, Jun 21, 2017 at 12:55:42PM +0530, Aneesh Kumar K.V wrote:
> Ram Pai writes:
>
> > 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
On Wed, Jun 21, 2017 at 11:05:33AM +0530, Anshuman Khandual wrote:
> On 06/21/2017 04:53 AM, Ram Pai wrote:
> > On Tue, Jun 20, 2017 at 03:50:25PM +0530, Anshuman Khandual wrote:
> >> On 06/17/2017 09:22 AM, Ram Pai wrote:
> >>> Rearrange 64K PTE bits to
On Wed, Jun 21, 2017 at 11:05:33AM +0530, Anshuman Khandual wrote:
> On 06/21/2017 04:53 AM, Ram Pai wrote:
> > On Tue, Jun 20, 2017 at 03:50:25PM +0530, Anshuman Khandual wrote:
> >> On 06/17/2017 09:22 AM, Ram Pai wrote:
> >>> Rearrange 64K PTE bits to
On Wed, Jun 21, 2017 at 09:24:36AM +0530, Anshuman Khandual wrote:
> On 06/21/2017 05:13 AM, Ram Pai wrote:
> > On Tue, Jun 20, 2017 at 12:54:45PM +0530, Anshuman Khandual wrote:
> >> On 06/17/2017 09:22 AM, Ram Pai wrote:
> >>> Handle Data and Instructi
On Wed, Jun 21, 2017 at 09:24:36AM +0530, Anshuman Khandual wrote:
> On 06/21/2017 05:13 AM, Ram Pai wrote:
> > On Tue, Jun 20, 2017 at 12:54:45PM +0530, Anshuman Khandual wrote:
> >> On 06/17/2017 09:22 AM, Ram Pai wrote:
> >>> Handle Data and Instructi
On Wed, Jun 21, 2017 at 08:48:20AM +0530, Anshuman Khandual wrote:
> On 06/21/2017 05:26 AM, Ram Pai wrote:
> > On Tue, Jun 20, 2017 at 12:24:53PM +0530, Anshuman Khandual wrote:
> >> On 06/17/2017 09:22 AM, Ram Pai wrote:
> >>> The value of the AMR register at the t
On Wed, Jun 21, 2017 at 08:48:20AM +0530, Anshuman Khandual wrote:
> On 06/21/2017 05:26 AM, Ram Pai wrote:
> > On Tue, Jun 20, 2017 at 12:24:53PM +0530, Anshuman Khandual wrote:
> >> On 06/17/2017 09:22 AM, Ram Pai wrote:
> >>> The value of the AMR register at the t
On Tue, Jun 20, 2017 at 11:56:04AM +0530, Anshuman Khandual wrote:
> On 06/17/2017 09:22 AM, Ram Pai wrote:
> > Added test support for PowerPC implementation off protection keys.
> >
> > Signed-off-by: Ram Pai <linux...@us.ibm.com>
>
> First of all, there ar
On Tue, Jun 20, 2017 at 11:56:04AM +0530, Anshuman Khandual wrote:
> On 06/17/2017 09:22 AM, Ram Pai wrote:
> > Added test support for PowerPC implementation off protection keys.
> >
> > Signed-off-by: Ram Pai
>
> First of all, there are a lot of instances where we u
On Tue, Jun 20, 2017 at 11:48:23AM +0530, Anshuman Khandual wrote:
> On 06/17/2017 09:22 AM, Ram Pai wrote:
> > The Documentaton file is moved from x86 into the generic area,
> > since this feature is now supported by more than one archs.
> >
> > Signed-off-by: R
On Tue, Jun 20, 2017 at 11:48:23AM +0530, Anshuman Khandual wrote:
> On 06/17/2017 09:22 AM, Ram Pai wrote:
> > The Documentaton file is moved from x86 into the generic area,
> > since this feature is now supported by more than one archs.
> >
> > Signed-off-by: Ram Pai
On Tue, Jun 20, 2017 at 12:16:40PM +0530, Anshuman Khandual wrote:
> On 06/19/2017 11:29 PM, Ram Pai wrote:
> > On Mon, Jun 19, 2017 at 09:06:13PM +1000, Michael Ellerman wrote:
> >> Ram Pai <linux...@us.ibm.com> writes:
> >>
> >>> Signed-off-by: Ram Pa
On Tue, Jun 20, 2017 at 12:16:40PM +0530, Anshuman Khandual wrote:
> On 06/19/2017 11:29 PM, Ram Pai wrote:
> > On Mon, Jun 19, 2017 at 09:06:13PM +1000, Michael Ellerman wrote:
> >> Ram Pai writes:
> >>
> >>> Signed-off-by: Ram Pai
> >>> -
On Mon, Jun 19, 2017 at 09:06:13PM +1000, Michael Ellerman wrote:
> Ram Pai <linux...@us.ibm.com> writes:
>
> > Signed-off-by: Ram Pai <linux...@us.ibm.com>
> > ---
> > arch/powerpc/kernel/exceptions-64s.S | 16 ++--
> > 1 file changed, 10
On Mon, Jun 19, 2017 at 09:06:13PM +1000, Michael Ellerman wrote:
> Ram Pai writes:
>
> > Signed-off-by: Ram Pai
> > ---
> > arch/powerpc/kernel/exceptions-64s.S | 16 ++--
> > 1 file changed, 10 insertions(+), 6 deletions(-)
> >
> > d
On Tue, Jun 20, 2017 at 12:24:53PM +0530, Anshuman Khandual wrote:
> On 06/17/2017 09:22 AM, Ram Pai wrote:
> > The value of the AMR register at the time of exception
> > is made available in gp_regs[PT_AMR] of the siginfo.
> >
> > This field can be used to re
On Tue, Jun 20, 2017 at 12:24:53PM +0530, Anshuman Khandual wrote:
> On 06/17/2017 09:22 AM, Ram Pai wrote:
> > The value of the AMR register at the time of exception
> > is made available in gp_regs[PT_AMR] of the siginfo.
> >
> > This field can be used to re
On Tue, Jun 20, 2017 at 12:54:45PM +0530, Anshuman Khandual wrote:
> On 06/17/2017 09:22 AM, Ram Pai wrote:
> > Handle Data and Instruction exceptions caused by memory
> > protection-key.
> >
> > Signed-off-by: Ram Pai <linux...@us.ibm.com&g
On Tue, Jun 20, 2017 at 12:54:45PM +0530, Anshuman Khandual wrote:
> On 06/17/2017 09:22 AM, Ram Pai wrote:
> > Handle Data and Instruction exceptions caused by memory
> > protection-key.
> >
> > Signed-off-by: Ram Pai
> > (cherry picked from commit a5e5217
On Tue, Jun 20, 2017 at 01:44:25PM +0530, Anshuman Khandual wrote:
> On 06/17/2017 09:22 AM, Ram Pai wrote:
> > Replace the magic number used to check for DSI exception
> > with a meaningful value.
> >
> > Signed-off-by: Ram Pai <linux...@us.ibm.com>
> >
On Tue, Jun 20, 2017 at 01:44:25PM +0530, Anshuman Khandual wrote:
> On 06/17/2017 09:22 AM, Ram Pai wrote:
> > Replace the magic number used to check for DSI exception
> > with a meaningful value.
> >
> > Signed-off-by: Ram Pai
> > ---
> > a
On Tue, Jun 20, 2017 at 01:51:45PM +0530, Anshuman Khandual wrote:
> On 06/17/2017 09:22 AM, Ram Pai wrote:
> > Map the PTE protection key bits to the HPTE key protection bits,
> > while creatiing HPTE entries.
> >
> > Signed-off-by: Ram Pai <linux...@us.ibm.
On Tue, Jun 20, 2017 at 01:51:45PM +0530, Anshuman Khandual wrote:
> On 06/17/2017 09:22 AM, Ram Pai wrote:
> > Map the PTE protection key bits to the HPTE key protection bits,
> > while creatiing HPTE entries.
> >
> > Signed-off-by: Ram Pai
> > ---
> >
On Tue, Jun 20, 2017 at 04:21:45PM +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 64K backed hpte pages. This along with the earlier
> > patch will entirely free up the f
On Tue, Jun 20, 2017 at 04:21:45PM +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 64K backed hpte pages. This along with the earlier
> > patch will entirely free up the f
On Tue, Jun 20, 2017 at 03:50:25PM +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 Tue, Jun 20, 2017 at 03:50:25PM +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 Mon, Jun 19, 2017 at 10:18:01PM +1000, Michael Ellerman wrote:
> Hi Ram,
>
> Ram Pai <linux...@us.ibm.com> writes:
> > Sys_pkey_alloc() allocates and returns available pkey
> > Sys_pkey_free() frees up the pkey.
> >
> > Total 32 keys are suppor
On Mon, Jun 19, 2017 at 10:18:01PM +1000, Michael Ellerman wrote:
> Hi Ram,
>
> Ram Pai writes:
> > Sys_pkey_alloc() allocates and returns available pkey
> > Sys_pkey_free() frees up the pkey.
> >
> > Total 32 keys are supported on powerpc. However pke
On Mon, Jun 19, 2017 at 09:06:13PM +1000, Michael Ellerman wrote:
> Ram Pai <linux...@us.ibm.com> writes:
>
> > Signed-off-by: Ram Pai <linux...@us.ibm.com>
> > ---
> > arch/powerpc/kernel/exceptions-64s.S | 16 ++--
> > 1 file changed, 10
On Mon, Jun 19, 2017 at 09:06:13PM +1000, Michael Ellerman wrote:
> Ram Pai writes:
>
> > Signed-off-by: Ram Pai
> > ---
> > arch/powerpc/kernel/exceptions-64s.S | 16 ++--
> > 1 file changed, 10 insertions(+), 6 deletions(-)
> >
> > d
Sys_pkey_alloc() allocates and returns available pkey
Sys_pkey_free() frees up the pkey.
Total 32 keys are supported on powerpc. However pkey 0,1 and 31
are reserved. So effectively we have 29 pkeys.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/K
Sys_pkey_alloc() allocates and returns available pkey
Sys_pkey_free() frees up the pkey.
Total 32 keys are supported on powerpc. However pkey 0,1 and 31
are reserved. So effectively we have 29 pkeys.
Signed-off-by: Ram Pai
---
arch/powerpc/Kconfig | 15
arch
part of the PTE will hold
(H_PAGE_F_SECOND|H_PAGE_F_GIX) at bit 60,61,62,63.
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/book3s/64/hash-64k.h | 26 --
arch/powerpc/mm/hash64_64k.c | 16 +++-
arch/powe
part of the PTE will hold
(H_PAGE_F_SECOND|H_PAGE_F_GIX) at bit 60,61,62,63.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/book3s/64/hash-64k.h | 26 --
arch/powerpc/mm/hash64_64k.c | 16 +++-
arch/powerpc/mm/hugetlbpage-hash64.c
Map the PTE protection key bits to the HPTE key protection bits,
while creatiing 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 | 7 +++
arch/powerpc/mm/hash_util
Map the PTE protection key bits to the HPTE key protection bits,
while creatiing HPTE entries.
Signed-off-by: Ram Pai
---
arch/powerpc/include/asm/book3s/64/mmu-hash.h | 5 +
arch/powerpc/include/asm/pkeys.h | 7 +++
arch/powerpc/mm/hash_utils_64.c | 5
Signed-off-by: Ram Pai <linux...@us.ibm.com>
---
arch/powerpc/include/asm/processor.h | 5 +
arch/powerpc/kernel/process.c| 18 ++
2 files changed, 23 insertions(+)
diff --git a/arch/powerpc/include/asm/processor.h
b/arch/powerpc/include/asm/processor.h
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