Messages in this thread | | | Date | Wed, 21 Dec 2011 16:08:55 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 7/8] cpufreq: Add support for x86 cpuinfo auto loading v3 |
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On 12/21/2011 04:01 PM, Andi Kleen wrote: >> A synthetic one is pointless, because you'd just be duplicating something >> similar to the above in generic code that would need updating for every new stepping. > > powernow-k8 uses two mechanisms: family/models and on newer CPUs like > Fam15 a CPUID bit. Just not in the standard leaves. This would > not need to be updated. >
So this should be:
1. added to the scattered CPUID features list; 2. artificially set in the AMD-specific initialization code for the older CPUs.
-hpa
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