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Diffstat (limited to 'arch/x86/kvm/x86.c')
-rw-r--r--arch/x86/kvm/x86.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 08ae951ecc5c..27d18b7617f3 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -760,6 +760,21 @@ int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val)
}
EXPORT_SYMBOL_GPL(kvm_get_dr);
+bool kvm_rdpmc(struct kvm_vcpu *vcpu)
+{
+ u32 ecx = kvm_register_read(vcpu, VCPU_REGS_RCX);
+ u64 data;
+ int err;
+
+ err = kvm_pmu_read_pmc(vcpu, ecx, &data);
+ if (err)
+ return err;
+ kvm_register_write(vcpu, VCPU_REGS_RAX, (u32)data);
+ kvm_register_write(vcpu, VCPU_REGS_RDX, data >> 32);
+ return err;
+}
+EXPORT_SYMBOL_GPL(kvm_rdpmc);
+
/*
* List of msr numbers which we expose to userspace through KVM_GET_MSRS
* and KVM_SET_MSRS, and KVM_GET_MSR_INDEX_LIST.