diff options
| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2022-05-19 13:27:08 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-06-24 19:52:45 +0300 |
| commit | 39b6b8c35cf37970e07e9081c0e7d1083930b2f7 (patch) | |
| tree | fdaa7be59d1af9cee3e3b1e005ef8c5d9689a17f /arch/x86/kvm/svm/avic.c | |
| parent | 8c9e639da435874fb845c4d296ce55664071ea7a (diff) | |
| download | linux-39b6b8c35cf37970e07e9081c0e7d1083930b2f7.tar.xz | |
KVM: SVM: Add AVIC doorbell tracepoint
Add a tracepoint to track number of doorbells being sent
to signal a running vCPU to process IRQ after being injected.
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Message-Id: <20220519102709.24125-17-suravee.suthikulpanit@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm/avic.c')
| -rw-r--r-- | arch/x86/kvm/svm/avic.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/kvm/svm/avic.c b/arch/x86/kvm/svm/avic.c index 229de5fe665d..f18c852b6900 100644 --- a/arch/x86/kvm/svm/avic.c +++ b/arch/x86/kvm/svm/avic.c @@ -324,8 +324,10 @@ void avic_ring_doorbell(struct kvm_vcpu *vcpu) */ int cpu = READ_ONCE(vcpu->cpu); - if (cpu != get_cpu()) + if (cpu != get_cpu()) { wrmsrl(MSR_AMD64_SVM_AVIC_DOORBELL, kvm_cpu_get_apicid(cpu)); + trace_kvm_avic_doorbell(vcpu->vcpu_id, kvm_cpu_get_apicid(cpu)); + } put_cpu(); } |