diff -r 27fec561af53 -r 11460fc587e6 config/target.in
--- a/config/target.in	Wed May 20 20:13:13 2009 +0000
+++ b/config/target.in	Wed Oct 21 22:51:39 2009 +0200
@@ -52,6 +52,16 @@
     prompt "Use the MMU" if ARCH_SUPPORTS_BOTH_MMU
     default n if ! ARCH_DEFAULT_HAS_MMU
     default y if ARCH_DEFAULT_HAS_MMU
+    help
+      If your architecture has an MMU and you want to use it,
+      say 'Y' here.
+      
+      OTOH, if you don't want to use the MMU, or your arch
+      lacks an MMU, say 'N' here.
+      
+      Note that some architectures (eg. ARM) has variants that
+      lacks an MMU (eg. ARM Cortex-M3), while other variants
+      have one (eg. ARM Cortex-A8).
 
 #--------------------------------------
 config ARCH_SUPPORTS_BOTH_ENDIAN