Hi Rob,
On Sun, 7 Jan 2018 15:14:25 +0100
Boris Brezillon wrote:
> Hi Rob,
>
> On Tue, 26 Dec 2017 12:29:34 -0600
> Rob Herring wrote:
>
> > >> > > > +Optional properties
> > >> > > > +---
> > >> > > > +- reg: static address. Only valid is the device has a static
> > >> > > >
Instead of using PROPERTY_ENTRY_INTEGER() with explicitly supplied type,
use PROPERTY_ENTRY_U32() dedicated macro.
It will help modify internals of built-in device properties API.
No functional change intended.
Signed-off-by: Andy Shevchenko
---
Documentation/input/devices/rotary-encoder.rst |
Update cpuidle documentation using git logs and existing documentation
in Documentation/cpuidle/sysfs.txt. This might be useful for scripting
and tracking changes in the ABI.
Signed-off-by: Aishwarya Pant
---
Documentation/ABI/testing/sysfs-devices-system-cpu | 79 ++
1 file
On 22/01/18 16:09, Aishwarya Pant wrote:
> Update cpuidle documentation using git logs and existing documentation
> in Documentation/cpuidle/sysfs.txt. This might be useful for scripting
> and tracking changes in the ABI.
>
> Signed-off-by: Aishwarya Pant
> ---
> Documentation/ABI/testing/sysf
On Mon, Jan 22, 2018 at 02:54:57PM +0200, Andy Shevchenko wrote:
> Instead of using PROPERTY_ENTRY_INTEGER() with explicitly supplied type,
> use PROPERTY_ENTRY_U32() dedicated macro.
>
> It will help modify internals of built-in device properties API.
>
> No functional change intended.
>
> Sign
Update cpuidle documentation using git logs and existing documentation
in Documentation/cpuidle/sysfs.txt. This might be useful for scripting
and tracking changes in the ABI.
Signed-off-by: Aishwarya Pant
---
Change in v2:
- Merge cpuidle_sysfs_switch attributes' description with the previous
e
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.
Acked-by: Balbir Singh
Signed-off-by: Ram Pai
---
fs/proc/task_mmu.c |1 +
include/linux/mm.h |3 ++-
Memory protection keys enable applications to protect its
address space from inadvertent access from or corruption
by itself.
These patches along with the pte-bit freeing patch series
enables the protection key feature on powerpc; 4k and 64k
hashpage kernels.
Will send the documentation and selft
VM_PKEY_BITx are defined only if CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
is enabled. Powerpc also needs these bits. Hence lets define the
VM_PKEY_BITx bits for any architecture that enables
CONFIG_ARCH_HAS_PKEYS.
Signed-off-by: Ram Pai
---
fs/proc/task_mmu.c |4 ++--
include/linux/mm.h |
Add documentation updates that capture PowerPC specific changes.
Signed-off-by: Thiago Jung Bauermann
Signed-off-by: Ram Pai
---
Documentation/vm/protection-keys.txt | 84 +
1 files changed, 63 insertions(+), 21 deletions(-)
diff --git a/Documentation/vm/prote
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 | 90 +
Documentation/x86/protection-keys.txt | 90
Memory protection keys enable applications to protect its
address space from inadvertent access from itself.
This feature is now enabled on powerpc architecture.
The patches moves the documentation to arch neutral directory and
captures the latest information.
Ram Pai (2):
Documentation/x86: M
Sorry please ignore this series. It was a duplication mistake.
I aborted the send midway, but a few escaped into the cyber.
RP
On Mon, Jan 22, 2018 at 10:26:29AM -0800, Ram Pai wrote:
> Memory protection keys enable applications to protect its
> address space from inadvertent access from or corr
Memory protection keys enable applications to protect its address space from
inadvertent access from itself.
This feature is now enabled on powerpc architecture. The patches move the
selftests to arch neutral directory and enhances them. Verified for correctness
on powerpc and on x86 architecture
From: Thiago Jung Bauermann
The sig_chld() handler calls dprintf2() taking care of setting
dprint_in_signal so that sigsafe_printf() won't call printf().
Unfortunately, this precaution is is negated by dprintf_level(), which
has a call to fflush().
This function acquires a lock, which means that
From: Thiago Jung Bauermann
This test verifies that the AMR is being written to a
process' core file.
Signed-off-by: Thiago Jung Bauermann
---
tools/testing/selftests/powerpc/ptrace/Makefile|2 +-
tools/testing/selftests/powerpc/ptrace/core-pkey.c | 438
2 files c
From: Thiago Jung Bauermann
This test exercises read and write access to the AMR.
Signed-off-by: Thiago Jung Bauermann
---
tools/testing/selftests/powerpc/include/reg.h |1 +
tools/testing/selftests/powerpc/ptrace/Makefile|5 +-
.../testing/selftests/powerpc/ptrace/ptrace-pkey
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 | 30 ++
1 files changed, 30 insertions(+), 0 deletions(-)
diff --gi
Generally the signal handler restores the state of the pkey register
before returning. However there are times when the read/write operation
can legitamely fail without invoking the signal handler. Eg: A
sys_read() operaton to a write-protected page should be disallowed. In
such a case the state
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/prot
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/protec
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/
pkey subsystem is supported if the hardware and kernel has support.
We determine that by checking if allocation of a key succeeds or not.
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/pkey-helpers.h| 22 --
tools/testing/selftests/vm/protection_keys.c |9 +++
The maximum number of keys that can be allocated has to
take into consideration, that some keys are reserved by
the architecture for specific purpose. Hence cannot
be allocated.
Fix the assertion in test_pkey_alloc_exhaust()
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/pkey-helpers
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 fi
Introduce powerpc implementation for the different
abstactions.
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/pkey-helpers.h| 109 ++
tools/testing/selftests/vm/protection_keys.c | 40 ++
2 files changed, 118 insertions(+), 31 deletions(-)
diff --g
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(+), 3
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/protec
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/protection
expected_pkey_fault() is comparing the contents of pkey
register with 0. This may not be true all the time. There
could be bits set by default by the architecture
which can never be changed. Hence compare the value against
shadow pkey register, which is supposed to track the bits
accurately all thr
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/selfte
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 a/to
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 fi
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 ++--
1
Signed-off-by: Ram Pai
---
tools/testing/selftests/vm/Makefile |1 +
tools/testing/selftests/vm/pkey-helpers.h | 223
tools/testing/selftests/vm/protection_keys.c | 1407 +
tools/testing/selftests/x86/Makefile |2 +-
tools/testing/self
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 | 69 ++
2 files changed, 51 insertions(+), 45 de
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(+), 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 | 66 --
2 files changed, 57 insertions(+), 71
Hi gengdongjiu,
On 21/01/18 02:45, gengdongjiu wrote:
> For the ESR_ELx_AET_UER, this exception is precise, closing the VM may
> be better[1].
> But if you think panic is better until we support kernel-first, it is
> also OK to me.
I'm not convinced SError while a guest was running means only gue
Hi gengdongjiu,
On 16/12/17 03:44, gengdongjiu wrote:
> On 2017/12/16 2:52, James Morse wrote:
>>> signal, it will record the CPER and trigger a IRQ to notify guest, as shown
>>> below:
>>>
>>> SIGBUS_MCEERR_AR trigger Synchronous External Abort.
>>> SIGBUS_MCEERR_AO trigger GPIO IRQ.
>>>
>>> For
Hi Dongjiu Geng,
(versions of patches 1,2 and 4 have been queued by Catalin)
(Nit 'ACPI / APEI:' is the normal subject prefix for ghes.c, this helps the
maintainers know which patches they need to pay attention to when you are
touching multiple trees)
On 06/01/18 16:02, Dongjiu Geng wrote:
> ARM
On 01/18/2018 09:09 AM, Prarit Bhargava wrote:
if (acpi_disabled) {
- if (earlycon_init_is_deferred)
+ if (earlycon_acpi_spcr_enable)
This patch works for me, so I can ACK it, but first you might want to
rename earlycon_acpi_spcr_enable, because these two li
On Sat, 20 Jan 2018, Tejun Heo wrote:
> > Hearing no response, I'll implement this as a separate tunable in a v2
> > series assuming there are no better ideas proposed before next week. One
> > of the nice things about a separate tunable is that an admin can control
> > the overall policy and
Andrew,
Please apply the following two patches to your tree.
[PATCH v10 01/27] mm, powerpc, x86: define VM_PKEY_BITx bits if
CONFIG_ARCH_HAS_PKEYS is enabled
[PATCH v10 02/27] mm, powerpc, x86: introduce an additional vma bit for powerpc
pkey
I have not heard any complaints on
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