diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c
index 15fd981..ffd8c7a 100644
--- a/arch/x86/pci/xen.c
+++ b/arch/x86/pci/xen.c
@@ -106,7 +106,7 @@
 			dev_dbg(&dev->dev,
 				"xen: msi already bound to pirq=%d\n", pirq);
 		}
-		irq = xen_bind_pirq_msi_to_irq(dev, msidesc, pirq,
+		irq = xen_bind_pirq_msi_to_irq(dev, msidesc, pirq, 0,
 					       (type == PCI_CAP_ID_MSIX) ?
 					       "msi-x" : "msi");
 		if (irq < 0)
@@ -145,7 +145,7 @@
 		goto error;
 	i = 0;
 	list_for_each_entry(msidesc, &dev->msi_list, list) {
-		irq = xen_bind_pirq_msi_to_irq(dev, msidesc, v[i],
+		irq = xen_bind_pirq_msi_to_irq(dev, msidesc, v[i], 0,
 					       (type == PCI_CAP_ID_MSIX) ?
 					       "pcifront-msi-x" :
 					       "pcifront-msi");
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 77ede77..3446948 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -662,7 +662,7 @@
 }
 
 int xen_bind_pirq_msi_to_irq(struct pci_dev *dev, struct msi_desc *msidesc,
-			     int pirq, const char *name)
+			     int pirq, int vector, const char *name)
 {
 	int irq, ret;
 
@@ -675,7 +675,7 @@
 	set_irq_chip_and_handler_name(irq, &xen_pirq_chip,
 				      handle_level_irq, name);
 
-	irq_info[irq] = mk_pirq_info(0, pirq, 0, 0);
+	irq_info[irq] = mk_pirq_info(0, pirq, 0, vector);
 	pirq_to_irq[pirq] = irq;
 	ret = set_irq_msi(irq, msidesc);
 	if (ret < 0)
@@ -691,7 +691,6 @@
 
 int xen_create_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, int type)
 {
-	int ret, irq = -1;
 	struct physdev_map_pirq map_irq;
 	int rc;
 	int pos;
@@ -719,34 +718,13 @@
 	rc = HYPERVISOR_physdev_op(PHYSDEVOP_map_pirq, &map_irq);
 	if (rc) {
 		dev_warn(&dev->dev, "xen map irq failed %d\n", rc);
-		goto out;
+		return -1;
 	}
 
-	spin_lock(&irq_mapping_update_lock);
-
-	irq = xen_allocate_irq_dynamic();
-
-	if (irq == -1)
-		goto out;
-
-	irq_info[irq] = mk_pirq_info(0, map_irq.pirq, 0, map_irq.index);
-	pirq_to_irq[map_irq.pirq] = irq;
-
-	set_irq_chip_and_handler_name(irq, &xen_pirq_chip,
-			handle_level_irq,
-			(type == PCI_CAP_ID_MSIX) ? "msi-x":"msi");
-
-	ret = set_irq_msi(irq, msidesc);
-	if (ret)
-		goto out_irq;
-
-out:
-	spin_unlock(&irq_mapping_update_lock);
-	return irq;
-out_irq:
-	spin_unlock(&irq_mapping_update_lock);
-	xen_free_irq(irq);
-	return -1;
+	return xen_bind_pirq_msi_to_irq(dev, msidesc,
+					map_irq.pirq, map_irq.index,
+					(type == PCI_CAP_ID_MSIX) ?
+					"msi-x" : "msi");
 }
 #endif
 
diff --git a/include/xen/events.h b/include/xen/events.h
index 18bf825..45c08a0 100644
--- a/include/xen/events.h
+++ b/include/xen/events.h
@@ -77,7 +77,7 @@
 #ifdef CONFIG_PCI_MSI
 int xen_allocate_pirq_msi(struct pci_dev *dev, struct msi_desc *msidesc);
 int xen_bind_pirq_msi_to_irq(struct pci_dev *dev, struct msi_desc *msidesc,
-			     int pirq, const char *name);
+			     int pirq, int vector, const char *name);
 int xen_create_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc, int type);
 #endif