Messages in this thread | | | Date | Mon, 04 Feb 2013 08:55:17 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 4/4] x86, 32-bit: Drop new_cpu_data |
| |
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
| |