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SubjectRe: [049/197] x86, amd: Get multi-node CPU info from NodeId MSR instead of PCI config space
On Tue, 27 Apr 2010, Andreas Herrmann wrote:

> > > 2.6.32-stable review patch. If anyone has any objections, please let us know.
> >
> > This patch is causing kernel panic on boot on Magny Cours CPU here
> > (cpu family 16, model 9, stepping 1).
> >
> > Please see screenshot from the paniced kernel on
> >
> > http://www.jikos.cz/jikos/junk/screenshot.jpg
> >
> > (sorry for bad quality of this screenshot, it was captured only from the
> > IPMI/HTTP console so far, I will try to grab something better tomorrow)
> >
> > Also this screenshot probably doesn't show the complete picture -- see the
> > "end trace" marker on the very first line. I will try to have something
> > better tomorrow, but maybe this rings bell for someone right away.
>
> This looks like a BIOS issue to me. Obviously this is a pre-production
> test system where an old BIOS is installed. A BIOS update should fix
> this issue for you.

I can confirm that on different Magny Cours system (16/9/1) with a newer
BIOS, the NodeID is provided correctly via MSR, and the issue doesn't
trigger.

Thanks,

--
Jiri Kosina
SUSE Labs, Novell Inc.


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