Re: [PATCH 13/14] x86/UV: Update UV support for external NMI signals

Ingo Molnar
2013-03-14T07:20:25Z

* Mike Travis <travis@sgi.com> 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