[RESEND PATCH v7 0/2] ACPI: APEI: handle synchronous exceptions with proper si_code

[Shuai Xue]

changes since v6:
- add more explicty error message suggested by Xiaofei
- pick up reviewed-by tag from Xiaofei
- pick up internal reviewed-by tag from Baolin

changes since v5 by addressing comments from Kefeng:
- document return value of memory_failure()
- drop redundant comments in call site of memory_failure() 
- make ghes_do_proc void and handle abnormal case within it
- pick up reviewed-by tag from Kefeng Wang 

changes since v4 by addressing comments from Xiaofei:
- do a force kill only for abnormal sync errors

changes since v3 by addressing comments from Xiaofei:
- do a force kill for abnormal memory failure error such as invalid PA,
unexpected severity, OOM, etc
- pcik up tested-by tag from Ma Wupeng

changes since v2 by addressing comments from Naoya:
- rename mce_task_work to sync_task_work
- drop ACPI_HEST_NOTIFY_MCE case in is_hest_sync_notify()
- add steps to reproduce this problem in cover letter

changes since v1:
- synchronous events by notify type
- Link: https://lore.kernel.org/lkml/20221206153354.92394-3-xueshuai@xxxxxxxxxxxxxxxxx/


Shuai Xue (2):
  ACPI: APEI: set memory failure flags as MF_ACTION_REQUIRED on
    synchronous events
  ACPI: APEI: handle synchronous exceptions in task work

 arch/x86/kernel/cpu/mce/core.c |   9 +--
 drivers/acpi/apei/ghes.c       | 113 ++++++++++++++++++++++-----------
 include/acpi/ghes.h            |   3 -
 mm/memory-failure.c            |  17 +----
 4 files changed, 79 insertions(+), 63 deletions(-)

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2.20.1.12.g72788fdb