Re: unknown NMI on AMD Rome

From: Adam Borowski
Date: Tue Mar 16 2021 - 12:05:40 EST


On Tue, Mar 16, 2021 at 04:45:02PM +0100, Jiri Olsa wrote:
> hi,
> when running 'perf top' on AMD Rome (/proc/cpuinfo below)
> with fedora 33 kernel 5.10.22-200.fc33.x86_64
>
> we got unknown NMI messages:
>
> [ 226.700160] Uhhuh. NMI received for unknown reason 3d on CPU 90.
> [ 226.700162] Do you have a strange power saving mode enabled?
> [ 226.700163] Dazed and confused, but trying to continue
>
> also when discussing ths with Borislav, he managed to reproduce easily
> on his AMD Rome machine

Likewise, 3c on Pinnacle Ridge.


Meow!
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