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intel_pstate: Add X86_FEATURE_APERFMPERF to cpu match parameters.

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commit 6cbd7ee10e upstream.

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>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dirk Brandewie
2014-01-06 10:59:16 -08:00
committed by Greg Kroah-Hartman
parent 9b788c26a9
commit d0ccf8a115
1 changed files with 2 additions and 1 deletions
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3
drivers/cpufreq/intel_pstate.c
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@@ -516,7 +516,8 @@ 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, default_policy),