diff -r d76a7a40f3a9 buildconfigs/linux-defconfig_xen_ia64
--- a/buildconfigs/linux-defconfig_xen_ia64	Fri Mar 31 16:44:26 2006
+++ b/buildconfigs/linux-defconfig_xen_ia64	Fri Mar 31 17:20:15 2006
@@ -487,7 +487,13 @@
 #
 CONFIG_MD=y
 # CONFIG_BLK_DEV_MD is not set
-# CONFIG_BLK_DEV_DM is not set
+CONFIG_BLK_DEV_DM=y
+CONFIG_DM_CRYPT=m
+CONFIG_DM_SNAPSHOT=m
+CONFIG_DM_MIRROR=m
+CONFIG_DM_ZERO=m
+CONFIG_DM_MULTIPATH=m
+CONFIG_DM_MULTIPATH_EMC=m
 
 #
 # Fusion MPT device support