KVM: Export ioapic_get_delivery_bitmask

It would be used for MSI in device assignment, for MSI dispatch.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
index c8f939c..23b81cf 100644
--- a/virt/kvm/ioapic.c
+++ b/virt/kvm/ioapic.c
@@ -153,8 +153,8 @@
 	kvm_vcpu_kick(vcpu);
 }
 
-static u32 ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest,
-				       u8 dest_mode)
+u32 kvm_ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest,
+				    u8 dest_mode)
 {
 	u32 mask = 0;
 	int i;
@@ -208,7 +208,8 @@
 		     "vector=%x trig_mode=%x\n",
 		     dest, dest_mode, delivery_mode, vector, trig_mode);
 
-	deliver_bitmask = ioapic_get_delivery_bitmask(ioapic, dest, dest_mode);
+	deliver_bitmask = kvm_ioapic_get_delivery_bitmask(ioapic, dest,
+							  dest_mode);
 	if (!deliver_bitmask) {
 		ioapic_debug("no target on destination\n");
 		return 0;
diff --git a/virt/kvm/ioapic.h b/virt/kvm/ioapic.h
index cd7ae76..49c9581 100644
--- a/virt/kvm/ioapic.h
+++ b/virt/kvm/ioapic.h
@@ -85,5 +85,7 @@
 int kvm_ioapic_init(struct kvm *kvm);
 void kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level);
 void kvm_ioapic_reset(struct kvm_ioapic *ioapic);
+u32 kvm_ioapic_get_delivery_bitmask(struct kvm_ioapic *ioapic, u8 dest,
+				u8 dest_mode);
 
 #endif