From: Dirk Brandewie Date: Mon, 6 Jan 2014 18:59:16 +0000 (-0800) Subject: intel_pstate: Add X86_FEATURE_APERFMPERF to cpu match parameters. X-Git-Tag: v4.9.8~6982^2^2~17 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6cbd7ee10e2842a3d1f9b60abede1c8f3d1f1130;p=platform%2Fkernel%2Flinux-rpi3.git intel_pstate: Add X86_FEATURE_APERFMPERF to cpu match parameters. KVM environments do not support APERF/MPERF MSRs. intel_pstate cannot operate without these registers. The previous validity checks in intel_pstate_msrs_not_valid() are insufficent in nested KVMs. References: https://bugzilla.redhat.com/show_bug.cgi?id=1046317 Signed-off-by: Dirk Brandewie Cc: All applicable Signed-off-by: Rafael J. Wysocki --- diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index f9d561e..d51f17ed 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -581,7 +581,8 @@ static void intel_pstate_timer_func(unsigned long __data) } #define ICPU(model, policy) \ - { X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, (unsigned long)&policy } + { X86_VENDOR_INTEL, 6, model, X86_FEATURE_APERFMPERF,\ + (unsigned long)&policy } static const struct x86_cpu_id intel_pstate_cpu_ids[] = { ICPU(0x2a, core_params),