提交 6cbd7ee1 编写于 作者: D Dirk Brandewie 提交者: Rafael J. Wysocki

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=1046317Signed-off-by: NDirk Brandewie <dirk.j.brandewie@intel.com>
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
上级 d6e0a2dd
...@@ -581,7 +581,8 @@ static void intel_pstate_timer_func(unsigned long __data) ...@@ -581,7 +581,8 @@ static void intel_pstate_timer_func(unsigned long __data)
} }
#define ICPU(model, policy) \ #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[] = { static const struct x86_cpu_id intel_pstate_cpu_ids[] = {
ICPU(0x2a, core_params), ICPU(0x2a, core_params),
......
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