diff options
| author | Dirk Brandewie <dirk.j.brandewie@intel.com> | 2014-01-06 10:59:16 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-01-15 15:31:43 -0800 |
| commit | 625b7e66c2d3c55e00962425a79321a8c257192a (patch) | |
| tree | feebb05d723c47c3fdfdcc5febe28142c084cbbe | |
| parent | f72f1552aa9e773308cfae4fcc5f04a5d6d3461b (diff) | |
intel_pstate: Add X86_FEATURE_APERFMPERF to cpu match parameters.
commit 6cbd7ee10e2842a3d1f9b60abede1c8f3d1f1130 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>
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 99d8ab548a34..d5dc567efd96 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -518,7 +518,8 @@ 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), |