--- linux-2.6.32.x86_64/arch/x86/xen/Kconfig.orig	2010-05-06 21:14:55.000000000 +0100
+++ linux-2.6.32.x86_64/arch/x86/xen/Kconfig	2010-05-06 22:11:32.000000000 +0100
@@ -6,6 +6,7 @@
 	bool "Xen guest support"
 	select PARAVIRT
 	select PARAVIRT_CLOCK
+	select XEN_XENBUS_FRONTEND
 	depends on X86_64 || (X86_32 && X86_PAE && !X86_VISWS)
 	depends on X86_CMPXCHG && X86_TSC
 	help