KVM: Trace exception injection

Often an exception can help point out where things start to go wrong.

Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 74e70d975ffa..a1cf87fe9f3a 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4237,6 +4237,9 @@ static void inject_pending_event(struct kvm_vcpu *vcpu)
 {
         /* try to reinject previous events if any */
         if (vcpu->arch.exception.pending) {
+                trace_kvm_inj_exception(vcpu->arch.exception.nr,
+                                        vcpu->arch.exception.has_error_code,
+                                        vcpu->arch.exception.error_code);
                 kvm_x86_ops->queue_exception(vcpu, vcpu->arch.exception.nr,
                                           vcpu->arch.exception.has_error_code,
                                           vcpu->arch.exception.error_code);