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x86/mce: Send #MC singal from task work

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Convert #MC over to using task_work_add(); it will run the same code
slightly later, on the return to user path of the same exception.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Link: https://lkml.kernel.org/r/20200505134100.957390899@linutronix.de
This commit is contained in:
Peter Zijlstra
2020-02-19 10:22:06 +01:00
committed by Thomas Gleixner
parent b052df3da8
commit 5567d11c21
2 changed files with 37 additions and 25 deletions
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6
include/linux/sched.h
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@@ -1297,6 +1297,12 @@ struct task_struct {
unsigned long prev_lowest_stack;
#endif
#ifdef CONFIG_X86_MCE
u64 mce_addr;
u64 mce_status;
struct callback_head mce_kill_me;
#endif
/*
* New fields for task_struct should be added above here, so that
* they are included in the randomized portion of task_struct.