Re: [RFC 0/3] Experimental patchset for CPPC
Ashwin Chaugule <[email protected]> Mon, 18 Aug 2014 11:04:53 -0400
| Newsgroups | org.kernel.vger.cpufreq,org.kernel.vger.linux-acpi,org.kernel.vger.linux-kernel |
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| Message-ID | <CAJ5Y-ebhE4-9WpB9Z+PO80qZJ2G4+UeK9Q3gk00XL=oO89esbA@mail.gmail.com> |
Hi Len, On 15 August 2014 18:11, Len Brown <[email protected]> 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