Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck...

[cascardo/linux.git] / arch / x86 / kvm / pmu.c

diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c
index cbecaa9..3dd6acc 100644 (file)
--- a/arch/x86/kvm/pmu.c
+++ b/arch/x86/kvm/pmu.c
@@ -428,6 +428,15 @@ int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
        return 1;
 }
 
+int kvm_pmu_check_pmc(struct kvm_vcpu *vcpu, unsigned pmc)
+{
+       struct kvm_pmu *pmu = &vcpu->arch.pmu;
+       bool fixed = pmc & (1u << 30);
+       pmc &= ~(3u << 30);
+       return (!fixed && pmc >= pmu->nr_arch_gp_counters) ||
+               (fixed && pmc >= pmu->nr_arch_fixed_counters);
+}
+
 int kvm_pmu_read_pmc(struct kvm_vcpu *vcpu, unsigned pmc, u64 *data)
 {
        struct kvm_pmu *pmu = &vcpu->arch.pmu;