KVM: PPC: booke: Support perfmon interrupts

When during guest context we get a performance monitor interrupt, we
currently bail out and oops. Let's route it to its correct handler
instead.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>

diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 7df3f3a..ee39c8a 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -679,6 +679,10 @@
 		r = RESUME_GUEST;
 		break;
 
+	case BOOKE_INTERRUPT_PERFORMANCE_MONITOR:
+		r = RESUME_GUEST;
+		break;
+
 	case BOOKE_INTERRUPT_HV_PRIV:
 		r = emulation_exit(run, vcpu);
 		break;