KVM: SVM: Add support for perf-kvm

This patch adds the necessary code to run perf-kvm on AMD
machines.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 10 insertions, 2 deletions

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 63fec1531e89..bfb49489566e 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -3647,13 +3647,21 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
 
         local_irq_disable();
 
-        stgi();
-
         vcpu->arch.cr2 = svm->vmcb->save.cr2;
         vcpu->arch.regs[VCPU_REGS_RAX] = svm->vmcb->save.rax;
         vcpu->arch.regs[VCPU_REGS_RSP] = svm->vmcb->save.rsp;
         vcpu->arch.regs[VCPU_REGS_RIP] = svm->vmcb->save.rip;
 
+        if (unlikely(svm->vmcb->control.exit_code == SVM_EXIT_NMI))
+                kvm_before_handle_nmi(&svm->vcpu);
+
+        stgi();
+
+        /* Any pending NMI will happen here */
+
+        if (unlikely(svm->vmcb->control.exit_code == SVM_EXIT_NMI))
+                kvm_after_handle_nmi(&svm->vcpu);
+
         sync_cr8_to_lapic(vcpu);
 
         svm->next_rip = 0;