Re: [RFC 0/9] mce recovery for Sandy Bridge server

[Borislav Petkov]

On Tue, May 24, 2011 at 09:57:46AM -0700, Luck, Tony wrote:
> So can we talk about this part for a while before returning to the
> "how to report this" discussion?
> 
> So here's the situation - we are in the NMI handler when we find from
> looking at the machine check bank registers that we have a recoverable
> error. We know the physical address, and we know the task (which might
> have been in user or kernel context). I can package that information
> into a perf/event ... but then how can I mark the current task as
> not-fit-for-execution?

Maybe something like

set_current_state(TASK_UNINTERRUPTIBLE);

finish work in NMI context

do remaining work in process context like sending appropriate signals
etc; finally:

set_task_state(tsk, TASK_RUNNING)

?

-- 
Regards/Gruss,
Boris.

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