--- libvirt.spec.orig	2010-08-18 15:02:53.000000000 +0300
+++ libvirt.spec	2010-11-15 14:17:36.388996162 +0200
@@ -104,7 +104,7 @@
 %ifnarch x86_64
 %define with_qemu 0
 %endif
-%define with_xen 0
+%define with_xen 1
 %endif
 
 # If Xen isn't turned on, we shouldn't build the xen proxy either