diff -r c1c170a55fe0e97156379d10870aed024ed0012a arch/i386/Kconfig
--- a/arch/i386/Kconfig	Thu Dec  8 20:50:02 2005 -0700
+++ b/arch/i386/Kconfig	Tue Dec 13 20:07:34 2005 +0200
@@ -58,6 +58,7 @@
 	bool "Xen-compatible"
 	select X86_UP_APIC if !SMP && XEN_PRIVILEGED_GUEST
 	select X86_UP_IOAPIC if !SMP && XEN_PRIVILEGED_GUEST
+	select SWIOTLB if XEN_PHYSDEV_ACCESS
 	help
 	  Choose this option is you plan to run this kernel on top of Xen
 	  Hypervisor.
@@ -716,8 +717,7 @@
 
 config SWIOTLB
 	bool
-	depends on X86_PRIVILEGED_GUEST
-	default y
+	default n
 
 source "drivers/firmware/Kconfig"