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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 <dirk.j.brandewie@intel.com>
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Dirk Brandewie 2014-01-06 10:59:16 -08:00 committed by Rafael J. Wysocki
parent d6e0a2dd12
commit 6cbd7ee10e
1 changed files with 2 additions and 1 deletions
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3
drivers/cpufreq/intel_pstate.c
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@ -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),