issues w/init

[Kumar Gala]

Ben,

The following patch is causing me issues w/init SEGV on boot.  This is  
a pretty old version of init and I'm wondering what the commit you had  
related to old ABI breakage:

commit 8d30c14cab30d405a05f2aaceda1e9ad57800f36
Author: Benjamin Herrenschmidt <benh at kernel.crashing.org>
Date:   Tue Feb 10 16:02:37 2009 +0000

     powerpc/mm: Rework I$/D$ coherency (v3)

     This patch reworks the way we do I and D cache coherency on  
PowerPC.


---
                 /*
                  * Allow execution from readable areas if the MMU  
does not
                  * provide separate controls over reading and  
executing.
+                *
+                * Note: That code used to not be enabled for 4xx/BookE.
+                * It is now as I/D cache coherency for these is done at
+                * set_pte_at() time and I see no reason why the test
+                * below wouldn't be valid on those processors. This - 
may-
+                * break programs compiled with a really old ABI though.
                  */

- k