Re: [PATCH] Fix i486 suspend to disk CR4 oops

[H. Peter Anvin]

Andi Kleen wrote:
> > >
> > The other alternative is to probe for the CPUID instruction (via
> > EFLAGS.ID) -- CR4 is present if and only if CPUID exists.
>
> Can be already checked for with boot_cpu_data.extended_cpuid_level.

I believe you mean just plain cpuid_level (which is set to -1 if CPUID 
doesn't exist.)  extended_cpuid_level is only defined on x86-64, but all 
x86-64 CPUs have CR4.

	-hpa
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