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| author | Dirk Brandewie <dirk.j.brandewie@intel.com> | 2014-01-06 19:59:16 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-01-06 22:16:14 +0100 |
| commit | 6cbd7ee10e2842a3d1f9b60abede1c8f3d1f1130 (patch) | |
| tree | 8103af2788275ac25a60a68c8c9bd424647f012b /drivers/cpufreq/intel_pstate.c | |
| parent | Linux 3.13-rc7 (diff) | |
| download | linux-6cbd7ee10e2842a3d1f9b60abede1c8f3d1f1130.tar.xz linux-6cbd7ee10e2842a3d1f9b60abede1c8f3d1f1130.zip | |
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>
Diffstat (limited to 'drivers/cpufreq/intel_pstate.c')
| -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 f9d561e198ab..d51f17ed691e 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), |