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[v4,0/2] powerpc/mce: Fix mce handler and add selftest

Message ID 20201009064005.19777-1-ganeshgr@linux.ibm.com (mailing list archive)
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Series powerpc/mce: Fix mce handler and add selftest | expand

Message

Ganesh Goudar Oct. 9, 2020, 6:40 a.m. UTC 
This patch series fixes mce handling for pseries, Adds LKDTM test
for SLB multihit recovery and enables selftest for the same,
basically to test MCE handling on pseries/powernv machines running
in hash mmu mode.

v4:
* Use radix_enabled() to check if its in Hash or Radix mode.
* Use FW_FEATURE_LPAR instead of machine_is_pseries().

v3:
* Merging selftest changes with patch 2/2, Instead of having separate
  patch.
* Minor improvements like adding enough comments, Makefile changes,
  including header file and adding some prints.

v2:
* Remove in_nmi check before calling nmi_enter/exit,
  as nesting is supported.
* Fix build errors and remove unused variables.
* Integrate error injection code into LKDTM.
* Add support to inject multihit in paca.


Ganesh Goudar (2):
  powerpc/mce: remove nmi_enter/exit from real mode handler
  lkdtm/powerpc: Add SLB multihit test

 arch/powerpc/kernel/mce.c               |   7 +-
 drivers/misc/lkdtm/Makefile             |   1 +
 drivers/misc/lkdtm/core.c               |   3 +
 drivers/misc/lkdtm/lkdtm.h              |   3 +
 drivers/misc/lkdtm/powerpc.c            | 156 ++++++++++++++++++++++++
 tools/testing/selftests/lkdtm/tests.txt |   1 +
 6 files changed, 167 insertions(+), 4 deletions(-)
 create mode 100644 drivers/misc/lkdtm/powerpc.c

Comments

Michael Ellerman Oct. 16, 2020, 11:32 a.m. UTC | #1 
On Fri, 9 Oct 2020 12:10:03 +0530, Ganesh Goudar wrote:
> This patch series fixes mce handling for pseries, Adds LKDTM test
> for SLB multihit recovery and enables selftest for the same,
> basically to test MCE handling on pseries/powernv machines running
> in hash mmu mode.
> 
> v4:
> * Use radix_enabled() to check if its in Hash or Radix mode.
> * Use FW_FEATURE_LPAR instead of machine_is_pseries().
> 
> [...]

Patch 1 applied to powerpc/fixes.

[1/2] powerpc/mce: Avoid nmi_enter/exit in real mode on pseries hash
      https://git.kernel.org/powerpc/c/8d0e2101274358d9b6b1f27232b40253ca48bab5

cheers
Ganesh Goudar Oct. 19, 2020, 5:26 a.m. UTC | #2 
On 10/16/20 5:02 PM, Michael Ellerman wrote:

> On Fri, 9 Oct 2020 12:10:03 +0530, Ganesh Goudar wrote:
>> This patch series fixes mce handling for pseries, Adds LKDTM test
>> for SLB multihit recovery and enables selftest for the same,
>> basically to test MCE handling on pseries/powernv machines running
>> in hash mmu mode.
>>
>> v4:
>> * Use radix_enabled() to check if its in Hash or Radix mode.
>> * Use FW_FEATURE_LPAR instead of machine_is_pseries().
>>
>> [...]
> Patch 1 applied to powerpc/fixes.
>
> [1/2] powerpc/mce: Avoid nmi_enter/exit in real mode on pseries hash
>        https://git.kernel.org/powerpc/c/8d0e2101274358d9b6b1f27232b40253ca48bab5
>
> cheers
Thank you, Any comments on patch 2.