[RFC patch 13/27] Add text_poke and sync_core to powerpc

[Mathieu Desnoyers]

- Needed on architectures where we must surround live instruction modification
  with "WP flag disable".
- Turns into a memcpy on powerpc since there is no WP flag activated for
  instruction pages (yet..).
- Add empty sync_core to powerpc so it can be used in architecture independent
  code.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>
CC: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
CC: Christoph Hellwig <hch@xxxxxxxxxxxxx>
CC: Paul Mackerras <paulus@xxxxxxxxx>
CC: Adrian Bunk <bunk@xxxxxxxxx>
CC: Andi Kleen <andi@xxxxxxxxxxxxxx>
CC: mingo@xxxxxxx
CC: akpm@xxxxxxxx
---
 include/asm-powerpc/cacheflush.h |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Index: linux-2.6-lttng/include/asm-powerpc/cacheflush.h
===================================================================
--- linux-2.6-lttng.orig/include/asm-powerpc/cacheflush.h	2007-11-19 12:05:50.000000000 -0500
+++ linux-2.6-lttng/include/asm-powerpc/cacheflush.h	2007-11-19 13:27:36.000000000 -0500
@@ -63,7 +63,9 @@ extern void flush_dcache_phys_range(unsi
 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
 	memcpy(dst, src, len)
 
-
+#define text_poke	memcpy
+#define text_poke_early	text_poke
+#define sync_core()
 
 #ifdef CONFIG_DEBUG_PAGEALLOC
 /* internal debugging function */

-- 
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/