x86/mce: Handle "action required" errors

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All non-urgent actions (reporting low severity errors and handling
"action-optional" errors) are now handled by a work queue. This
means that TIF_MCE_NOTIFY can be used to block execution for a
thread experiencing an "action-required" fault until we get all
cpus out of the machine check handler (and the thread that hit
the fault into mce_notify_process().

We use the new mce_{save,find,clear}_info() API to get information
from do_machine_check() to mce_notify_process(), and then use the
newly improved memory_failure(..., MF_ACTION_REQUIRED) to handle
the error (possibly signalling the process).

Update some comments to make the new code flows clearer.

Signed-off-by: Tony Luck <tony.luck@intel.com>

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This commit is contained in:

Tony Luck 2012-01-03 11:45:45 -08:00

parent af104e394e

commit a8c321fbf9

1 changed files with 53 additions and 42 deletions

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arch/x86/kernel/cpu/mcheck/mce.c

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