KVM: round robin for APIC lowest priority delivery mode

Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h
index f8fe87d..dbb929d 100644
--- a/drivers/kvm/kvm.h
+++ b/drivers/kvm/kvm.h
@@ -413,6 +413,7 @@
 	struct kvm_io_bus pio_bus;
 	struct kvm_pic *vpic;
 	struct kvm_ioapic *vioapic;
+	int round_robin_prev_vcpu;
 };
 
 static inline struct kvm_pic *pic_irqchip(struct kvm *kvm)