Kefeng Wang writes:
> Use setup_initial_init_mm() helper to simplify code.
>
> Cc: Michael Ellerman
> Cc: Benjamin Herrenschmidt
> Cc: linuxppc-dev@lists.ozlabs.org
> Signed-off-by: Kefeng Wang
> ---
> arch/powerpc/kernel/setup-common.c | 5 +
> 1 file changed, 1 insertion(+), 4
Hi Vaibhav,
Vaibhav Jain writes:
> Persistent memory devices like NVDIMMs can loose cached writes in case
> something prevents flush on power-fail. Such situations are termed as
> dirty shutdown and are exposed to applications as
> last-shutdown-state (LSS) flag and a
Lakshmi Ramasubramanian writes:
> On 4/20/21 10:35 PM, Santosh Sivaraj wrote:
> Hi Santosh,
>
>>
>>> There are a few "goto out;" statements before the local variable "fdt"
>>> is initialized through the call to of_kexec_alloc_a
Hi Lakshmi,
Lakshmi Ramasubramanian writes:
> There are a few "goto out;" statements before the local variable "fdt"
> is initialized through the call to of_kexec_alloc_and_setup_fdt() in
> elf64_load(). This will result in an uninitialized "fdt" being passed
> to kvfree() in this function
Ganesh writes:
> On 4/20/21 12:54 PM, Santosh Sivaraj wrote:
>
>> Hi Ganesh,
>>
>> Ganesh Goudar writes:
>>
>>> When we hit an UE while using machine check safe copy routines,
>>> ignore_event flag is set and the event is ignored by mce han
mce->u.ue_error.physical_address = phys_addr;
> - mce->u.ue_error.ignore_event = mce_err->ignore_event;
> machine_check_ue_event(mce);
> }
> }
Small nit:
Setting ignore event can happen before the ph
Hi Ganesh,
Ganesh Goudar writes:
> When we hit an UE while using machine check safe copy routines,
> ignore_event flag is set and the event is ignored by mce handler,
> And the flag is also saved for defered handling and printing of
> mce event information, But as of now saving of this flag
Define watchdog_allowed_mask only when SOFTLOCKUP_DETECTOR is enabled.
Fixes: 7feeb9cd4f5b ("watchdog/sysctl: Clean up sysctl variable name space")
Cc: Thomas Gleixner
Cc: Andrew Morton
Reviewed-by: Petr Mladek
Signed-off-by: Santosh Sivaraj
---
v2:
Added Petr's reviewed-by from [
Define watchdog_allowed_mask only when SOFTLOCKUP_DETECTOR is enabled.
Signed-off-by: Santosh Sivaraj
---
Original patch is here:
https://lore.kernel.org/lkml/20190807014417.9418-1-sant...@fossix.org/
A similar patch was also sent by Balamuruhan and reviewed by Petr.
https://lkml.org/lkml/2020
hash_low_64.S was removed in [1] and since flush_hash_page is not called
from any assembly routine.
[1]: commit a43c0eb8364c0 ("powerpc/mm: Convert 4k insert from asm to C")
Signed-off-by: Santosh Sivaraj
---
arch/powerpc/mm/book3s64/hash_utils.c | 4
1 file changed, 4 deletion
Subscribe to the MCE notification and add the physical address which
generated a memory error to nvdimm bad range.
Reviewed-by: Mahesh Salgaonkar
Signed-off-by: Santosh Sivaraj
---
arch/powerpc/platforms/pseries/papr_scm.c | 96 ++-
1 file changed, 95 insertions(+), 1
Introduce notification chain which lets us know about uncorrected memory
errors(UE). This would help prospective users in pmem or nvdimm subsystem
to track bad blocks for better handling of persistent memory allocations.
Signed-off-by: Santosh Sivaraj
Signed-off-by: Ganesh Goudar
---
arch
Christophe Leroy writes:
> Le 09/07/2020 à 09:56, Santosh Sivaraj a écrit :
>> Introduce notification chain which lets know about uncorrected memory
>> errors(UE). This would help prospective users in pmem or nvdimm subsystem
>> to track bad blocks for better handling
Christophe Leroy writes:
> Le 09/07/2020 à 09:56, Santosh Sivaraj a écrit :
>> Subscribe to the MCE notification and add the physical address which
>> generated a memory error to nvdimm bad range.
>>
>> Reviewed-by: Mahesh Salgaonkar
>> Signed-off-by: Santosh
Subscribe to the MCE notification and add the physical address which
generated a memory error to nvdimm bad range.
Reviewed-by: Mahesh Salgaonkar
Signed-off-by: Santosh Sivaraj
---
arch/powerpc/platforms/pseries/papr_scm.c | 98 ++-
1 file changed, 97 insertions(+), 1
Introduce notification chain which lets know about uncorrected memory
errors(UE). This would help prospective users in pmem or nvdimm subsystem
to track bad blocks for better handling of persistent memory allocations.
Signed-off-by: Santosh S
Signed-off-by: Ganesh Goudar
---
Hi Bharata,
Bharata B Rao writes:
> Make GTSE an MMU feature and enable it by default for radix.
> However for guest, conditionally enable it if hypervisor supports
> it via OV5 vector. Let prom_init ask for radix GTSE only if the
> support exists.
>
> Having GTSE as an MMU feature will make
-aneesh.ku...@linux.ibm.com
Fixes: a46cc7a90fd8 ("powerpc/mm/radix: Improve TLB/PWC flushes")
Signed-off-by: Peter Zijlstra (Intel)
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
---
arch/Kconfig| 3 ---
arch/powerpc/include/asm/tlb.h | 11 +++
arch/sparc/inclu
ase is unlikely to be a
problem for anyone in practice, unless they've hacked their kernel to
build it !SMP."
Link:
http://lkml.kernel.org/r/20200116064531.483522-2-aneesh.ku...@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
---
ux.ibm.com
Signed-off-by: Peter Zijlstra (Intel)
Signed-off-by: Aneesh Kumar K.V
Reported-by: "Aneesh Kumar K.V"
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: backported to 4.19 stable]
---
include/asm-generic/tlb.h | 7 ++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --gi
-aneesh.ku...@linux.ibm.com
Fixes: a46cc7a90fd8 ("powerpc/mm/radix: Improve TLB/PWC flushes")
Signed-off-by: Peter Zijlstra (Intel)
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: backported to 4.19 stable]
---
arch/Kconfig| 3 ---
arch/powerpc/Kconfig
ku...@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: backported for 4.19 stable]
---
arch/powerpc/Kconfig | 2 +-
arch/powerpc/include/asm/book3s/32/pgalloc.h | 8
arch/powerpc/include/asm/book3s/64/pgalloc.h |
require this.
Make it an opt-out, instead of an opt-in.
No change in behavior intended.
Signed-off-by: Peter Zijlstra (Intel)
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: prerequisite for upcoming tlbflush backports]
---
arch/Kconfig | 2 +-
arch/powerpc/Kconfig | 1 +
arch/sparc
that are cleared
and provide a means to query the smallest granule required for invalidation.
Signed-off-by: Will Deacon
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: prerequisite for upcoming tlbflush backports]
---
include/asm-generic/tlb.h | 58 +--
mm
higher up the tree.
Add a new bit to the flags bitfield in struct mmu_gather so that the
architecture code can operate accordingly if it's the intermediate
levels being invalidated.
Signed-off-by: Peter Zijlstra
Signed-off-by: Will Deacon
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh
The TLB flush optimisation (a46cc7a90f: powerpc/mm/radix: Improve TLB/PWC
flushes) may result in random memory corruption. Any concurrent page-table walk
could end up with a Use-after-Free. Even on UP this might give issues, since
mmu_gather is preemptible these days. An interrupt or preempted
Subscribe to the MCE notification and add the physical address which
generated a memory error to nvdimm bad range.
Reviewed-by: Mahesh Salgaonkar
Signed-off-by: Santosh Sivaraj
---
arch/powerpc/platforms/pseries/papr_scm.c | 98 ++-
1 file changed, 97 insertions(+), 1
Mahesh J Salgaonkar writes:
> On 2020-04-01 13:17:41 Wed, Santosh Sivaraj wrote:
>> Subscribe to the MCE notification and add the physical address which
>> generated a memory error to nvdimm bad range.
>>
>> Signed-off-by: Santosh Sivaraj
>> ---
>>
>
330071219.12284-1-ganes...@linux.ibm.com/
Thanks,
Santosh
>
> url:
> https://github.com/0day-ci/linux/commits/Santosh-Sivaraj/papr-scm-Add-bad-memory-ranges-to-nvdimm-bad-ranges/20200401-171233
> base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
On Wed, Apr 1, 2020 at 1:18 PM Santosh Sivaraj wrote:
> Subscribe to the MCE notification and add the physical address which
> generated a memory error to nvdimm bad range.
>
> Signed-off-by: Santosh Sivaraj
> ---
>
Any comments on this?
Thanks,
Santosh
> This patch de
Subscribe to the MCE notification and add the physical address which
generated a memory error to nvdimm bad range.
Signed-off-by: Santosh Sivaraj
---
This patch depends on "powerpc/mce: Add MCE notification chain" [1].
Unlike the previous series[2], the patch adds badblock registr
ux.ibm.com
Signed-off-by: Peter Zijlstra (Intel)
Signed-off-by: Aneesh Kumar K.V
Reported-by: "Aneesh Kumar K.V"
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: backported to 4.19 stable]
---
include/asm-generic/tlb.h | 7 ++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --
-aneesh.ku...@linux.ibm.com
Fixes: a46cc7a90fd8 ("powerpc/mm/radix: Improve TLB/PWC flushes")
Signed-off-by: Peter Zijlstra (Intel)
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: backported to 4.19 stable]
---
arch/Kconfig| 3 ---
arch/powerpc/Kconfig
ku...@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: backported for 4.19 stable]
---
arch/powerpc/Kconfig | 2 +-
arch/powerpc/include/asm/book3s/32/pgalloc.h | 8
arch/powerpc/include/asm/book3s/64/pgalloc.h |
require this.
Make it an opt-out, instead of an opt-in.
No change in behavior intended.
Signed-off-by: Peter Zijlstra (Intel)
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: prerequisite for upcoming tlbflush backports]
---
arch/Kconfig | 2 +-
arch/powerpc/Kconfig | 1 +
arch
that are cleared
and provide a means to query the smallest granule required for invalidation.
Signed-off-by: Will Deacon
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: prerequisite for upcoming tlbflush backports]
---
include/asm-generic/tlb.h | 58 +--
mm
higher up the tree.
Add a new bit to the flags bitfield in struct mmu_gather so that the
architecture code can operate accordingly if it's the intermediate
levels being invalidated.
Signed-off-by: Peter Zijlstra
Signed-off-by: Will Deacon
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh
The TLB flush optimisation (a46cc7a90f: powerpc/mm/radix: Improve TLB/PWC
flushes) may result in random memory corruption. Any concurrent page-table walk
could end up with a Use-after-Free. Even on UP this might give issues, since
mmu_gather is preemptible these days. An interrupt or preempted
ux.ibm.com
Signed-off-by: Peter Zijlstra (Intel)
Signed-off-by: Aneesh Kumar K.V
Reported-by: "Aneesh Kumar K.V"
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: backported to 4.19 stable]
---
include/asm-generic/tlb.h | 7 ++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --
-aneesh.ku...@linux.ibm.com
Fixes: a46cc7a90fd8 ("powerpc/mm/radix: Improve TLB/PWC flushes")
Signed-off-by: Peter Zijlstra (Intel)
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: backported to 4.19 stable]
---
arch/Kconfig| 3 ---
arch/powerpc/Kconfig
ku...@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: backported for 4.19 stable]
---
arch/powerpc/Kconfig | 2 +-
arch/powerpc/include/asm/book3s/32/pgalloc.h | 8
arch/powerpc/include/asm/book3s/64/pgalloc.h |
require this.
Make it an opt-out, instead of an opt-in.
No change in behavior intended.
Signed-off-by: Peter Zijlstra (Intel)
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: prerequisite for upcoming tlbflush backports]
---
arch/Kconfig | 2 +-
arch/powerpc/Kconfig | 1 +
arch
that are cleared
and provide a means to query the smallest granule required for invalidation.
Signed-off-by: Will Deacon
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: prerequisite for upcoming tlbflush backports]
---
include/asm-generic/tlb.h | 58 +--
mm
higher up the tree.
Add a new bit to the flags bitfield in struct mmu_gather so that the
architecture code can operate accordingly if it's the intermediate
levels being invalidated.
Signed-off-by: Peter Zijlstra
Signed-off-by: Will Deacon
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh
The TLB flush optimisation (a46cc7a90f: powerpc/mm/radix: Improve TLB/PWC
flushes) may result in random memory corruption. Any concurrent page-table walk
could end up with a Use-after-Free. Even on UP this might give issues, since
mmu_gather is preemptible these days. An interrupt or preempted
.com
Fixes: a46cc7a90fd8 ("powerpc/mm/radix: Improve TLB/PWC flushes")
Signed-off-by: Peter Zijlstra (Intel)
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: backported to 4.19 stable]
---
arch/Kconfig| 3 ---
arch/powerpc/Kconfig| 1 -
arch/powerpc/inc
a (Intel)
Signed-off-by: Aneesh Kumar K.V
Reported-by: "Aneesh Kumar K.V"
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: backported to 4.19 stable]
---
include/asm-generic/tlb.h | 7 ++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/include/asm-generic/tl
d-off-by: Aneesh Kumar K.V
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: backported for 4.19 stable]
---
arch/powerpc/Kconfig | 2 +-
arch/powerpc/include/asm/book3s/32/pgalloc.h | 8
arch/powerpc/include/asm/book3s/64/pgalloc.h | 2 --
arch/powerpc/mm/pg
-in.
No change in behavior intended.
96bc9567cbe1 in upstream.
Signed-off-by: Peter Zijlstra (Intel)
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: prerequisite for upcoming tlbflush backports]
---
arch/Kconfig | 2 +-
arch/powerpc/Kconfig | 1 +
arch/sparc/Kconfig | 1 +
arch/x86
granule required for invalidation.
a6d60245d6d9 in upstream
Signed-off-by: Will Deacon
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: prerequisite for upcoming tlbflush backports]
---
include/asm-generic/tlb.h | 58 +--
mm/memory.c | 4
in struct mmu_gather so that the
architecture code can operate accordingly if it's the intermediate
levels being invalidated.
22a61c3c4f1379 in upstream
Signed-off-by: Peter Zijlstra
Signed-off-by: Will Deacon
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: prerequisite for tlbflush
The TLB flush optimisation (a46cc7a90f: powerpc/mm/radix: Improve TLB/PWC
flushes) may result in random memory corruption. Any concurrent page-table walk
could end up with a Use-after-Free. Even on UP this might give issues, since
mmu_gather is preemptible these days. An interrupt or preempted
-by: Aneesh Kumar K.V
Reported-by: "Aneesh Kumar K.V"
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: backported to 4.19 stable]
---
include/asm-generic/tlb.h | 7 ++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/include/asm-generic/tlb.h b/include/asm-g
owerpc/mm/radix: Improve TLB/PWC flushes")
Signed-off-by: Peter Zijlstra (Intel)
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: backported to 4.19 stable]
---
arch/Kconfig| 3 ---
arch/powerpc/Kconfig| 1 -
arch/powerpc/include/asm/tlb.h | 11 +++
tforms that run on
Power9 force SMP on in Kconfig, so the !SMP case is unlikely to be a
problem for anyone in practice, unless they've hacked their kernel to
build it !SMP."
Link:
http://lkml.kernel.org/r/20200116064531.483522-2-aneesh.ku...@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V
Cc:
-in.
No change in behavior intended.
Signed-off-by: Peter Zijlstra (Intel)
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: prerequisite for upcoming tlbflush backports]
---
arch/Kconfig | 2 +-
arch/powerpc/Kconfig | 1 +
arch/sparc/Kconfig | 1 +
arch/x86/Kconfig | 1 -
mm/memory.c
granule required for invalidation.
Signed-off-by: Will Deacon
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: prerequisite for upcoming tlbflush backports]
---
include/asm-generic/tlb.h | 58 +--
mm/memory.c | 4 ++-
2 files changed, 53
The TLB flush optimisation (a46cc7a90f: powerpc/mm/radix: Improve TLB/PWC
flushes) may result in random memory corruption. Any concurrent page-table walk
could end up with a Use-after-Free. Even on UP this might give issues, since
mmu_gather is preemptible these days. An interrupt or preempted
in struct mmu_gather so that the
architecture code can operate accordingly if it's the intermediate
levels being invalidated.
Signed-off-by: Peter Zijlstra
Signed-off-by: Will Deacon
Cc: # 4.19
Signed-off-by: Santosh Sivaraj
[santosh: prerequisite for tlbflush backports]
---
include/asm-generic
Christophe Leroy writes:
> Le 13/09/2019 à 15:31, Santosh Sivaraj a écrit :
>> Christophe Leroy writes:
>>
>>> Hi Santosh,
>>>
>>> Le 26/08/2019 à 07:44, Santosh Sivaraj a écrit :
>>>> Hi Christophe,
>>>>
>>>> Ch
Christophe Leroy writes:
> Hi Santosh,
>
> Le 26/08/2019 à 07:44, Santosh Sivaraj a écrit :
>> Hi Christophe,
>>
>> Christophe Leroy writes:
>>
>>> __get_datapage() is only a few instructions to retrieve the
>>> address of the page where the
t
> Signed-off-by: Aneesh Kumar K.V
> ---
> arch/powerpc/mm/init_64.c | 17 ++++-
> drivers/nvdimm/pfn_devs.c | 2 ++
> include/linux/memremap.h | 1 +
> 3 files changed, 19 insertions(+), 1 deletion(-)
Tested-by: Santosh Sivaraj
>
> diff --git a/arch/powe
For sizes lesser than 128 bytes, the code branches out early without saving
the stack frame, which when restored later drops frame of the caller.
Tested-by: Aneesh Kumar K.V
Signed-off-by: Santosh Sivaraj
---
arch/powerpc/lib/memcpy_mcsafe_64.S | 2 +-
1 file changed, 1 insertion(+), 1
Appropriate self tests for memcpy_mcsafe
Suggested-by: Michael Ellerman
Signed-off-by: Santosh Sivaraj
---
tools/testing/selftests/powerpc/copyloops/.gitignore | 1 +
tools/testing/selftests/powerpc/copyloops/Makefile | 7 ++-
tools/testing/selftests/powerpc/copyloops/asm
Hi Christophe,
Christophe Leroy writes:
> __get_datapage() is only a few instructions to retrieve the
> address of the page where the kernel stores data to the VDSO.
>
> By inlining this function into its users, a bl/blr pair and
> a mflr/mtlr pair is avoided, plus a few reg moves.
>
> The
Christophe Leroy writes:
> DSISR has a bit to tell if the fault is due to a read or a write.
>
> Display it.
>
> Signed-off-by: Christophe Leroy
Reviewed-by: Santosh Sivaraj
> ---
> arch/powerpc/mm/fault.c | 6 --
> 1 file changed, 4 insertions(+), 2 deletions(
Christophe Leroy writes:
> Le 21/08/2019 à 14:15, Segher Boessenkool a écrit :
>> On Wed, Aug 21, 2019 at 01:50:52PM +0200, Christophe Leroy wrote:
>>> Do you have any idea on how to avoid that bcl/mflr stuff ?
>>
>> Do a load from some fixed address? Maybe an absolute address, even?
>> lwz
Christophe Leroy writes:
> Le 21/08/2019 à 11:29, Santosh Sivaraj a écrit :
>> __get_datapage() is only a few instructions to retrieve the
>> address of the page where the kernel stores data to the VDSO.
>>
>> By inlining this function into its users, a bl/blr p
clock-gettime-realtime-coarse: syscall: 515 nsec/call373 nsec/call
clock-gettime-realtime-coarse:libc: 23 nsec/call 22 nsec/call
clock-gettime-realtime-coarse:vdso: 14 nsec/call 13 nsec/call
Based on the patch by Christophe Leroy for vdso32.
Signed-off-by: Santosh Sivaraj
Use memcpy_mcsafe() implementation to define copy_to_user_mcsafe()
Signed-off-by: Santosh Sivaraj
---
arch/powerpc/Kconfig | 1 +
arch/powerpc/include/asm/uaccess.h | 14 ++
2 files changed, 15 insertions(+)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
largely borrows from the copyuser_power7 logic and does not add
the VMX optimizations, largely to keep the patch simple. If needed those
optimizations can be folded in.
Signed-off-by: Balbir Singh
[ar...@linux.ibm.com: Added symbol export]
Co-developed-by: Santosh Sivaraj
Signed-off-by: Santosh
Reviewed-by: Nicholas Piggin
Signed-off-by: Santosh Sivaraj
---
arch/powerpc/include/asm/mce.h | 4 +++-
arch/powerpc/kernel/mce.c | 16
arch/powerpc/kernel/mce_power.c | 15 +--
3 files changed, 32 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc
Gleixner
Cc: Ingo Molnar
Cc: Nicholas Piggin
Signed-off-by: Santosh Sivaraj
Reviewed-by: Nicholas Piggin
---
include/linux/extable.h | 2 ++
kernel/extable.c| 11 +--
2 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/include/linux/extable.h b/include/linux/extable.h
From: Reza Arbab
The function doesn't get used outside this file, so make it static.
Signed-off-by: Reza Arbab
Signed-off-by: Santosh Sivaraj
Reviewed-by: Nicholas Piggin
---
arch/powerpc/kernel/mce.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc
: ba41e1e1ccb9 ("powerpc/mce: Hookup derror (load/store) UE errors")
Signed-off-by: Balbir Singh
[ar...@linux.ibm.com: Fixup pseries_do_memory_failure()]
Signed-off-by: Reza Arbab
Tested-by: Mahesh Salgaonkar
Signed-off-by: Santosh Sivaraj
Cc: sta...@vger.kernel.org # v4.15+
---
arch/powe
schedule_work() cannot be called from MCE exception context as MCE can
interrupt even in interrupt disabled context.
fixes: 733e4a4c ("powerpc/mce: hookup memory_failure for UE errors")
Reviewed-by: Mahesh Salgaonkar
Reviewed-by: Nicholas Piggin
Acked-by: Balbir Singh
Signed-off-b
mcpy_mcsafe for pmem
Reza Arbab (1):
powerpc/mce: Make machine_check_ue_event() static
Santosh Sivaraj (3):
powerpc/mce: Schedule work from irq_work
extable: Add function to search only kernel exception table
powerpc: add machine check safe copy_to_user
arch/powerpc/Kconfig
Santosh Sivaraj writes:
> This series, which should be based on top of the still un-merged
> "powerpc: implement machine check safe memcpy" series, adds support
> to add the bad blocks which generated an MCE to the NVDIMM bad blocks.
> The next access of the same
Subscribe to the MCE notification and add the physical address which
generated a memory error to nvdimm bad range.
Signed-off-by: Santosh Sivaraj
---
drivers/nvdimm/of_pmem.c | 151 +--
1 file changed, 131 insertions(+), 20 deletions(-)
diff --git a/drivers
Subscribe to the MCE notification and add the physical address which
generated a memory error to nvdimm bad range.
Signed-off-by: Santosh Sivaraj
---
arch/powerpc/platforms/pseries/papr_scm.c | 86 ++-
1 file changed, 85 insertions(+), 1 deletion(-)
diff --git a/arch
This is needed to report bad blocks for persistent memory.
Signed-off-by: Santosh Sivaraj
---
arch/powerpc/include/asm/mce.h | 3 +++
arch/powerpc/kernel/mce.c | 15 +++
2 files changed, 18 insertions(+)
diff --git a/arch/powerpc/include/asm/mce.h b/arch/powerpc/include/asm
This series, which should be based on top of the still un-merged
"powerpc: implement machine check safe memcpy" series, adds support
to add the bad blocks which generated an MCE to the NVDIMM bad blocks.
The next access of the same memory will be blocked by the NVDIMM layer
itself.
-
m: Fixup pseries_do_memory_failure()]
>> Signed-off-by: Reza Arbab
>> Co-developed-by: Santosh Sivaraj
>> Signed-off-by: Santosh Sivaraj
>> Tested-by: Mahesh Salgaonkar
>> Cc: sta...@vger.kernel.org # v4.15+
>> ---
>> arch/powerpc/include/asm/mce.h
"Oliver O'Halloran" writes:
> On Wed, Aug 14, 2019 at 6:25 PM Santosh Sivaraj wrote:
>>
>> Subscribe to the MCE notification and add the physical address which
>> generated a memory error to nvdimm bad range.
>>
>> Signed-off-by: Santosh Sivaraj
Use memcpy_mcsafe() implementation to define copy_to_user_mcsafe()
Signed-off-by: Santosh Sivaraj
---
arch/powerpc/Kconfig | 1 +
arch/powerpc/include/asm/uaccess.h | 14 ++
2 files changed, 15 insertions(+)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
From: Balbir Singh
If we take a UE on one of the instructions with a fixup entry, set nip
to continue execution at the fixup entry. Stop processing the event
further or print it.
Co-developed-by: Reza Arbab
Signed-off-by: Reza Arbab
Signed-off-by: Balbir Singh
Signed-off-by: Santosh Sivaraj
largely borrows from the copyuser_power7 logic and does not add
the VMX optimizations, largely to keep the patch simple. If needed those
optimizations can be folded in.
Signed-off-by: Balbir Singh
[ar...@linux.ibm.com: Added symbol export]
Co-developed-by: Santosh Sivaraj
Signed-off-by: Santosh
Gleixner
Cc: Ingo Molnar
Cc: Nicholas Piggin
Signed-off-by: Santosh Sivaraj
Reviewed-by: Nicholas Piggin
---
include/linux/extable.h | 2 ++
kernel/extable.c| 11 +--
2 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/include/linux/extable.h b/include/linux/extable.h
From: Reza Arbab
The function doesn't get used outside this file, so make it static.
Signed-off-by: Reza Arbab
Signed-off-by: Santosh Sivaraj
Reviewed-by: Nicholas Piggin
---
arch/powerpc/kernel/mce.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc
: ba41e1e1ccb9 ("powerpc/mce: Hookup derror (load/store) UE errors")
Signed-off-by: Balbir Singh
[ar...@linux.ibm.com: Fixup pseries_do_memory_failure()]
Signed-off-by: Reza Arbab
Co-developed-by: Santosh Sivaraj
Signed-off-by: Santosh Sivaraj
Tested-by: Mahesh Salgaonkar
Cc: sta...@vger.
schedule_work() cannot be called from MCE exception context as MCE can
interrupt even in interrupt disabled context.
fixes: 733e4a4c ("powerpc/mce: hookup memory_failure for UE errors")
Suggested-by: Mahesh Salgaonkar
Signed-off-by: Santosh Sivaraj
Reviewed-by: Mahesh Salgaon
last patch
--
Balbir Singh (3):
powerpc/mce: Fix MCE handling for huge pages
powerpc/memcpy: Add memcpy_mcsafe for pmem
powerpc/mce: Handle UE event for memcpy_mcsafe
Reza Arbab (1):
powerpc/mce: Make machine_check_ue_event() static
Santosh Sivaraj (3):
powerpc/mce: Schedule work fro
Hi Balbir,
Balbir Singh writes:
> On 12/8/19 7:22 pm, Santosh Sivaraj wrote:
>> If we take a UE on one of the instructions with a fixup entry, set nip
>> to continue execution at the fixup entry. Stop processing the event
>> further or print it.
>>
>> Co-develo
Hi Balbir,
Balbir Singh writes:
> On 12/8/19 7:22 pm, Santosh Sivaraj wrote:
>> Use memcpy_mcsafe() implementation to define copy_to_user_mcsafe()
>>
>> Signed-off-by: Santosh Sivaraj
>> ---
>> arch/powerpc/Kconfig | 1 +
>>
Balbir Singh writes:
> On 12/8/19 7:22 pm, Santosh Sivaraj wrote:
>> Certain architecture specific operating modes (e.g., in powerpc machine
>> check handler that is unable to access vmalloc memory), the
>> search_exception_tables cannot be called because it also searches th
Subscribe to the MCE notification and add the physical address which
generated a memory error to nvdimm bad range.
Signed-off-by: Santosh Sivaraj
---
arch/powerpc/platforms/pseries/papr_scm.c | 65 +++
1 file changed, 65 insertions(+)
diff --git a/arch/powerpc/platforms
Subscribe to the MCE notification and add the physical address which
generated a memory error to nvdimm bad range.
Signed-off-by: Santosh Sivaraj
---
drivers/nvdimm/of_pmem.c | 122 +--
1 file changed, 103 insertions(+), 19 deletions(-)
diff --git a/drivers
This is needed to report bad blocks for persistent memory.
Signed-off-by: Santosh Sivaraj
---
arch/powerpc/include/asm/mce.h | 3 +++
arch/powerpc/kernel/mce.c | 15 +++
2 files changed, 18 insertions(+)
diff --git a/arch/powerpc/include/asm/mce.h b/arch/powerpc/include/asm
This series, which should be based on top of the still un-merged
"powerpc: implement machine check safe memcpy" series, adds support
to add the bad blocks which generated an MCE to the NVDIMM bad blocks.
The next access of the same memory will be blocked by the NVDIMM layer
itself
Sasha Levin writes:
> Hi,
>
> [This is an automated email]
>
> This commit has been processed because it contains a "Fixes:" tag,
> fixing commit: ba41e1e1ccb9 powerpc/mce: Hookup derror (load/store) UE errors.
>
> The bot has tested the following trees: v5.2.8, v4.19.66.
>
> v5.2.8: Build OK!
>
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