diff -r 2789bdd1a950 -r b2b6b1d46aa1 arch/x86_64/config.in
--- a/arch/x86_64/config.in	Fri Jun 27 14:55:22 2008 +0000
+++ b/arch/x86_64/config.in	Sat Jul 19 12:17:26 2008 +0000
@@ -1,6 +1,9 @@
 # x86_64 specific options
 
 config ARCH_x86_64
+    select ARCH_SUPPORT_ARCH
+    select ARCH_SUPPORT_CPU
+    select ARCH_SUPPORT_TUNE
     help
       The x86_64 architecture, as defined by:
         http://www.amd.com/us-en/Processors/DevelopWithAMD/0,,30_2252_875_7044,00.html