Re: [RFC 0/3] Experimental patchset for CPPC

From: Ashwin Chaugule
Date: Mon Aug 18 2014 - 11:05:01 EST


Hi Len,

On 15 August 2014 18:11, Len Brown <lenb@xxxxxxxxxx> wrote:
> The Linux team at Intel did not implement ACPI CPPC support
> because we see no benefit to it over the native hardware interface on x86.
>

Thanks for sharing Intels observations. I had looked at the SDM [1]
and found all the CPPC MSRs. I suppose X86 will not use a majority of
it.

Cheers,
Ashwin

[1] - HWP section 14.4
http://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-vol-3b-part-2-manual.pdf
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