Re: [PATCH -v3] perf, x86: try to handle unknown nmis with running perfctrs

Robert Richter
2010-08-25T11:08:12Z

On 25.08.10 06:41:30, Ingo Molnar wrote:

> > > > > Uhhuh. NMI received for unknown reason 00 on CPU 9.
> > > > > Do you have a strange power saving mode enabled?
> > > > > Dazed and confused, but trying to continue
>
> Before the two patches i did not get these messages at all, on any of
> the systems.

Yes, because all were eaten by NOTIFY_STOP, and that's why we also
lose NMIs from other sources, like the nmi button. The patches try to
fix this.

-Robert

--
Advanced Micro Devices, Inc.
Operating System Research Center