Re: [PATCH 1/10] Cr4 is valid on some 486s

[H. Peter Anvin]

Pavel Machek wrote:
> Hi!
>
>
> > So some 486 processors do have CR4 register.  Allow them to present it in
> > register dumps by using the old fault technique rather than testing processor
> > family.
>
>
> I thought Andi commented this as "way too risky", for little
> good. Nested exceptions are evil.
> 									Pavel

I think the 486's that have CR4 are the same that have CPUID, and thus 
can be tested for by the presence of the ID flag.

	-hpa
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