path: root/arch/x86/kvm/svm/pmu.c
diff options
authorDavid Dunn <daviddunn@google.com>2022-02-23 22:57:41 +0000
committerPaolo Bonzini <pbonzini@redhat.com>2022-02-25 08:20:14 -0500
commitba7bb663f5547ef474c98df99a97bb4a13c5715f (patch)
treeedf880ca47225e0903485a4ff16a55824152cdd8 /arch/x86/kvm/svm/pmu.c
parent925088781eede43cf6616a1197c31dee451b7948 (diff)
KVM: x86: Provide per VM capability for disabling PMU virtualization
Add a new capability, KVM_CAP_PMU_CAPABILITY, that takes a bitmask of settings/features to allow userspace to configure PMU virtualization on a per-VM basis. For now, support a single flag, KVM_PMU_CAP_DISABLE, to allow disabling PMU virtualization for a VM even when KVM is configured with enable_pmu=true a module level. To keep KVM simple, disallow changing VM's PMU configuration after vCPUs have been created. Signed-off-by: David Dunn <daviddunn@google.com> Message-Id: <20220223225743.2703915-2-daviddunn@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm/pmu.c')
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/svm/pmu.c b/arch/x86/kvm/svm/pmu.c
index 5aa45f13b16d..d4de52409335 100644
--- a/arch/x86/kvm/svm/pmu.c
+++ b/arch/x86/kvm/svm/pmu.c
@@ -101,7 +101,7 @@ static inline struct kvm_pmc *get_gp_pmc_amd(struct kvm_pmu *pmu, u32 msr,
struct kvm_vcpu *vcpu = pmu_to_vcpu(pmu);
- if (!enable_pmu)
+ if (!vcpu->kvm->arch.enable_pmu)
return NULL;
switch (msr) {