commit dfd54cbcc0b834652389ce99b5e656ea5f44a3c1
author Heiko Carstens <heiko.carstens@de.ibm.com> Mon Sep 25 23:31:33 2006 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> Tue Sep 26 08:48:49 2006 -0700
tree 7c403a50b42b2809bb9b18122cbd83e8e2c180c9
parent b72f160443cb78b2f8addae6e331d2adaa70f869

[PATCH] bootmem: use MAX_DMA_ADDRESS instead of LOW32LIMIT

Introduce ARCH_LOW_ADDRESS_LIMIT which can be set per architecture to
override the 4GB default limit used by the bootmem allocater within
__alloc_bootmem_low() and __alloc_bootmem_low_node().  E.g.  s390 needs a
2GB limit instead of 4GB.

Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/asm-s390/processor.h

diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h
index a3a4e5f..578c220 100644
--- a/include/asm-s390/processor.h
+++ b/include/asm-s390/processor.h
@@ -337,6 +337,8 @@
 int register_idle_notifier(struct notifier_block *nb);
 int unregister_idle_notifier(struct notifier_block *nb);
 
+#define ARCH_LOW_ADDRESS_LIMIT	0x7fffffffUL
+
 #endif
 
 /*