On Thu, Aug 14, 2014 at 03:57:07PM -0400, Ashwin Chaugule wrote: > > > What is CPPC: > ============= > > CPPC is the new interface for CPU performance control between the OS and the > platform defined in ACPI 5.0+. The interface is built on an abstract > representation of CPU performance rather than raw frequency. Basic operation > consists of:
Why do we want this? Typically we've ignored ACPI and gone straight to MSR access, intel_pstate and intel_idle were created especially to avoid ACPI, so why return to it. Also, the whole interface sounds like trainwreck (one would not expect anything else from ACPI). So _why_?
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