Re: Cyrix 6x86 patches and problems

Brian Gerst (bgerst@quark.vpplus.com)
Fri, 31 Oct 1997 12:19:44 -0500

Patrick St. Jean wrote:
>
> On Fri, 31 Oct 1997, Brian Gerst wrote:
> > The kernel should at least be able to *identify* a cyrix processor as a
> > cyrix instead of a 486, and that would require patching the kernel. The
> > performance options probably should be left to user space though.
> >
>
> Brian,
> Try the patch I posted last week. It completely redid the cpu
> identification stuff so that chips would get id'd correctly. I'm going to
> send it to you privately as well...
>
> Pat
>

Unfortunately, the Pre-MX Cyrix 6x86's are broken by design: the CPUID
instruction is disabled by default. Your patch needs to detect a cyrix
6x86 cpu by other means, then enable CPUID so it can be readily
identified. Otherwise, it will be detected as an i486.

-- 


						Brian Gerst