Re: bizarre problems with Athlon system after upgrdaing motherboard

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Mon Sep 11 2000 - 15:53:10 EST


> > When we upgraded the motherboard, we got consistant GPFs right after
> > the line:
> > Enabling extended fast FPU save
>
> It sounds like Redhat patched the kernel to support the Pentium III XMM
> extensions and the kernel is misdetecting the Athlon as a PIII.

The Athlon claims to support FXSAVE, so I dont think that explains it. There
is a problem with the older RH kernel (2.2.14 one) which sees the PSN flag
is set and tries to disable PSN but the AMD chips use the flag for a
different purpose

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