Re: [PATCH 07/10] cpufreq: Add support for x86 cpuinfo auto loading

From: H. Peter Anvin
Date: Thu Dec 15 2011 - 20:20:38 EST


On 12/08/2011 06:37 AM, Andi Kleen wrote:
>> Well, there is CPUID_8000_0007_EDX[7] which denotes the presence
>> of the P-state registers. It probably could be added to
>> init_scattered_cpuid_features() but there's still special handling
>> needed for K8.
>
> Dave is probably right that it's not worth moving the list.
>
>> Can you do both a family and a feature bit test with the autoprobing
>> code?
>

Another similar question: is it possible to key a load on more than one
CPU feature? It's fairly common that you need more than one feature for
a specific piece of code to function, and it would be good to be able to
represent it.

-hpa


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