With F-9 pv_ops based kernel-xen, xenblk is renamed to xen-blkfront and xennet is renamed to xen-netfront. Kudzu needs to be updated: xen.c:87: xendev->driver = strdup("xenblk"); xen.c:103: xendev->driver = strdup("xennet"); (Note, not assigning to kudzu owner until we switch rawhide over. Latest scratch build available from here: http://koji.fedoraproject.org/koji/taskinfo?taskID=460974 )
That code isn't actually used anywhere any more.