diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 6beee32..6b8b83e 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -66,6 +66,9 @@
 	bool
 	default y
 
+config ARCH_NO_VIRT_TO_BUS
+	def_bool PPC64
+
 config PPC
 	bool
 	default y