--- old/usr/src/uts/common/xen/io/xdf.c	Thu May 14 05:48:33 2009
+++ new/usr/src/uts/common/xen/io/xdf.c	Thu May 14 05:48:29 2009
@@ -3310,7 +3310,7 @@
 	xdf_hvm_add(dip);
 
 	/* Report our version to dom0.  */
-	if (xenbus_printf(XBT_NULL, "hvmpv/xdf", "version", "%d",
+	if (xenbus_printf(XBT_NULL, "guest/xdf", "version", "%d",
 	    HVMPV_XDF_VERS))
 		cmn_err(CE_WARN, "xdf: couldn't write version\n");