Re: Pentium IV-summary

From: David Weinehall (tao@acc.umu.se)
Date: Wed Nov 08 2000 - 15:47:59 EST


On Wed, Nov 08, 2000 at 12:36:21PM -0800, H. Peter Anvin wrote:
> Followup to: <379322493.973714466779.JavaMail.root@web346-wra.mail.com>
> By author: Frank Davis <fdavis112@juno.com>
> In newsgroup: linux.dev.kernel
> >
> > 2. There's a bug in get_model_name(),
> > cpuid(0x80000001, &dummy, &dummy, &dummy, &(c->x86_capability));
> >
> > that overwrites the capability state. It will be fixed in 2.2.18 by
> > Dave Jones. Should we also look at Peter Anvin's fix for the problem
> > that Linus mentioned? What are the other features of the Pentium IV
> > should be included in the kernel pending the capability state fix?
> >
>
> I'm working on a revamp of the i386 CPUID detection code, which will
> fix this problem as a side effect.

Is this revamp only for processors that actually support the
CPUID-instruction, or will you fix the CPU-detection for non-CPUID
processors too?! There are quite a few processors that can be detected
properly but aren't (for instance, IBM 486slc/slc2/slc3)

/David Weinehall
  _ _
 // David Weinehall <tao@acc.umu.se> /> Northern lights wander \\
// Project MCA Linux hacker // Dance across the winter sky //
\> http://www.acc.umu.se/~tao/ </ Full colour fire </
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