diff options
Diffstat (limited to 'arch/x86/kvm/vmx/capabilities.h')
| -rw-r--r-- | arch/x86/kvm/vmx/capabilities.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx/capabilities.h b/arch/x86/kvm/vmx/capabilities.h index 2d3f13b18714..292e58679d95 100644 --- a/arch/x86/kvm/vmx/capabilities.h +++ b/arch/x86/kvm/vmx/capabilities.h @@ -7,6 +7,7 @@ #include "lapic.h" #include "x86.h" #include "pmu.h" +#include "cpuid.h" extern bool __read_mostly enable_vpid; extern bool __read_mostly flexpriority_enabled; @@ -409,6 +410,9 @@ static inline u64 vmx_get_perf_capabilities(void) u64 perf_cap = PMU_CAP_FW_WRITES; u64 host_perf_cap = 0; + if (!enable_pmu) + return 0; + if (boot_cpu_has(X86_FEATURE_PDCM)) rdmsrl(MSR_IA32_PERF_CAPABILITIES, host_perf_cap); |