Re: [PATCH 2/2][v2] cpufreq: intel_pstate: Get percpu max freq via HWP MSR register if available

2021-01-11 Thread Chen Yu
On Mon, Jan 11, 2021 at 03:11:02AM -0800, Srinivas Pandruvada wrote: > On Mon, 2021-01-11 at 15:43 +0800, Chen Yu wrote: > > Currently when turbo is disabled(either by BIOS or by the user), the > > intel_pstate > > driver reads the max frequency from the package-wide > > MSR_PLATFORM_INFO(0xce)

Re: [PATCH 2/2][v2] cpufreq: intel_pstate: Get percpu max freq via HWP MSR register if available

2021-01-11 Thread Srinivas Pandruvada
On Mon, 2021-01-11 at 15:43 +0800, Chen Yu wrote: > Currently when turbo is disabled(either by BIOS or by the user), the > intel_pstate > driver reads the max frequency from the package-wide > MSR_PLATFORM_INFO(0xce) register. > However on asymmetric platforms it is possible in theory that small >

[PATCH 2/2][v2] cpufreq: intel_pstate: Get percpu max freq via HWP MSR register if available

2021-01-10 Thread Chen Yu
Currently when turbo is disabled(either by BIOS or by the user), the intel_pstate driver reads the max frequency from the package-wide MSR_PLATFORM_INFO(0xce) register. However on asymmetric platforms it is possible in theory that small and big core with HWP enabled might have different max cpu