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Message-ID: <YFDWmwgDa/FzFsIs@angband.pl>
Date: Tue, 16 Mar 2021 17:02:35 +0100
From: Adam Borowski <kilobyte@...band.pl>
To: Jiri Olsa <jolsa@...hat.com>
Cc: Borislav Petkov <bp@...en8.de>,
Tom Lendacky <thomas.lendacky@....com>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>, x86@...nel.org,
lkml <linux-kernel@...r.kernel.org>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Stanislav Kozina <skozina@...hat.com>,
Michael Petlan <mpetlan@...hat.com>,
Pierre Amadio <pamadio@...hat.com>, onatalen@...hat.com,
darcari@...hat.com
Subject: Re: unknown NMI on AMD Rome
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!
--
⢀⣴⠾⠻⢶⣦⠀
⣾⠁⢠⠒⠀⣿⡁ in the beginning was the boot and root floppies and they were good.
⢿⡄⠘⠷⠚⠋⠀ -- <willmore> on #linux-sunxi
⠈⠳⣄⠀⠀⠀⠀
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