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SubjectRe: x86, amd: Get multi-node CPU info from NodeId MSR instead of PCI config space

* Andreas Herrmann <herrmann.der.user@googlemail.com> wrote:

> > are there any such CPUs?
>
> Only Magny-Cours so far.
>
> > I.e. we want to know the effect of this patch on various models of
> > AMD CPUs - is the change really .32 safe? Does it solve any problem
> > that makes it .32 material versus being for .33?
>
> IMHO getting rid of the PCI config space accesses as soon as possible
> is a benefit, I think.

Agreed.

Is the patch an identity transformation? Or are there CPUs where the
information from the PCI config space is different from the MSR derived
one?

Ingo


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