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