Re: [PATCH 13/14] x86/UV: Update UV support for external NMI signals
From: Ingo Molnar
Date: Thu Mar 14 2013 - 03:20:28 EST
* Mike Travis <travis@xxxxxxx> wrote:
>
> There is an exception where the NMI_LOCAL notifier chain is used. When
> the perf tools are in use, it's possible that our NMI was captured by
> some other NMI handler and then ignored. We set a per_cpu flag for
> those CPUs that ignored the initial NMI, and then send them an IPI NMI
> signal.
"Other" NMI handlers should never lose NMIs - if they do then they should
be fixed I think.
Thanks,
Ingo
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