KVM: PPC: booke: Reinject performance monitor interrupts

When we get a performance monitor interrupt, we need to make sure that
the host receives it. So reinject it like we reinject the other host
destined interrupts.
Signed-off-by: NAlexander Graf <agraf@suse.de>
Signed-off-by: NAvi Kivity <avi@redhat.com>

arch/powerpc/include/asm/hw_irq.h

@@ -33,6 +33,7 @@
 extern void __replay_interrupt(unsigned int vector);
 
 extern void timer_interrupt(struct pt_regs *);
+extern void performance_monitor_exception(struct pt_regs *regs);
 
 #ifdef CONFIG_PPC64
 #include <asm/paca.h>

arch/powerpc/kvm/booke.c

@@ -634,6 +634,10 @@ static void kvmppc_restart_interrupt(struct kvm_vcpu *vcpu,
 	case BOOKE_INTERRUPT_MACHINE_CHECK:
 		/* FIXME */
 		break;
+	case BOOKE_INTERRUPT_PERFORMANCE_MONITOR:
+		kvmppc_fill_pt_regs(&regs);
+		performance_monitor_exception(&regs);
+		break;
 	}
 }