On 02/04/2013 01:02 AM, Borislav Petkov wrote:
> On Sun, Feb 03, 2013 at 09:44:02PM -0800, H. Peter Anvin wrote:
>> boot_cpu_data is ok for things that are indeed universally valid
>> across. That does not include CPUID level, for one.
>
> Wait a minute, hold the phone! :-)
>
> Are you saying that CPUID_EAX(0) could return different values in %eax
> on the *same* system with mixed-silicon steppings? Or even on an uniform
> system?
>
Yes and yes (in the latter case due to inconsistent MSR programming.)
-hpa
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