diff --git a/hw/xen/xen_backend.c b/hw/xen/xen_backend.c
index 3ceb7783260cd569bead8400f31499710f3e634a..69a238817ecf02e9fb42f822fdd442d302cb1083 100644
--- a/hw/xen/xen_backend.c
+++ b/hw/xen/xen_backend.c
@@ -780,6 +780,16 @@ int xen_be_register(const char *type, struct XenDevOps *ops)
     return xenstore_scan(type, xen_domid, ops);
 }
 
+void xen_be_register_common(void)
+{
+    xen_be_register("console", &xen_console_ops);
+    xen_be_register("vkbd", &xen_kbdmouse_ops);
+    xen_be_register("qdisk", &xen_blkdev_ops);
+#ifdef CONFIG_USB_LIBUSB
+    xen_be_register("qusb", &xen_usb_ops);
+#endif
+}
+
 int xen_be_bind_evtchn(struct XenDevice *xendev)
 {
     if (xendev->local_port != -1) {
diff --git a/hw/xenpv/xen_machine_pv.c b/hw/xenpv/xen_machine_pv.c
index 48f725c9cd632ebd4b481c89e8392367be3fcd24..79aef4ecc37b43babee3df743e3cd239ee766523 100644
--- a/hw/xenpv/xen_machine_pv.c
+++ b/hw/xenpv/xen_machine_pv.c
@@ -67,14 +67,9 @@ static void xen_init_pv(MachineState *machine)
         break;
     }
 
-    xen_be_register("console", &xen_console_ops);
-    xen_be_register("vkbd", &xen_kbdmouse_ops);
+    xen_be_register_common();
     xen_be_register("vfb", &xen_framebuffer_ops);
-    xen_be_register("qdisk", &xen_blkdev_ops);
     xen_be_register("qnic", &xen_netdev_ops);
-#ifdef CONFIG_USB_LIBUSB
-    xen_be_register("qusb", &xen_usb_ops);
-#endif
 
     /* configure framebuffer */
     if (xenfb_enabled) {
diff --git a/include/hw/xen/xen_backend.h b/include/hw/xen/xen_backend.h
index 754c0a4ee640e4aec67b30433d5ad6d513764628..0df282ab5f94652caf5585f035fb3f9050d38f00 100644
--- a/include/hw/xen/xen_backend.h
+++ b/include/hw/xen/xen_backend.h
@@ -87,6 +87,7 @@ void xen_be_check_state(struct XenDevice *xendev);
 
 /* xen backend driver bits */
 int xen_be_init(void);
+void xen_be_register_common(void);
 int xen_be_register(const char *type, struct XenDevOps *ops);
 int xen_be_set_state(struct XenDevice *xendev, enum xenbus_state state);
 int xen_be_bind_evtchn(struct XenDevice *xendev);
diff --git a/xen-hvm.c b/xen-hvm.c
index eb577926a1c2f3eb55f883e5e8dfbf83a5d92479..3b0343a8e6f8c1f64df7b03be6529c71903431aa 100644
--- a/xen-hvm.c
+++ b/xen-hvm.c
@@ -1318,9 +1318,7 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory)
         error_report("xen backend core setup failed");
         goto err;
     }
-    xen_be_register("console", &xen_console_ops);
-    xen_be_register("vkbd", &xen_kbdmouse_ops);
-    xen_be_register("qdisk", &xen_blkdev_ops);
+    xen_be_register_common();
     xen_read_physmap(state);
     return;