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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2006-09-25 23:31:33 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-26 08:48:49 -0700 |
| commit | dfd54cbcc0b834652389ce99b5e656ea5f44a3c1 (patch) | |
| tree | 7c403a50b42b2809bb9b18122cbd83e8e2c180c9 /mm/bootmem.c | |
| parent | b72f160443cb78b2f8addae6e331d2adaa70f869 (diff) | |
| download | lwn-dfd54cbcc0b834652389ce99b5e656ea5f44a3c1.tar.gz lwn-dfd54cbcc0b834652389ce99b5e656ea5f44a3c1.zip | |
[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>
Diffstat (limited to 'mm/bootmem.c')
| -rw-r--r-- | mm/bootmem.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/mm/bootmem.c b/mm/bootmem.c index f0f85fa713ca..d53112fcb404 100644 --- a/mm/bootmem.c +++ b/mm/bootmem.c @@ -15,6 +15,7 @@ #include <asm/bug.h> #include <asm/io.h> +#include <asm/processor.h> #include "internal.h" @@ -453,7 +454,9 @@ void * __init __alloc_bootmem_node(pg_data_t *pgdat, unsigned long size, return __alloc_bootmem(size, align, goal); } -#define LOW32LIMIT 0xffffffff +#ifndef ARCH_LOW_ADDRESS_LIMIT +#define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL +#endif void * __init __alloc_bootmem_low(unsigned long size, unsigned long align, unsigned long goal) @@ -462,7 +465,8 @@ void * __init __alloc_bootmem_low(unsigned long size, unsigned long align, void *ptr; list_for_each_entry(bdata, &bdata_list, list) { - ptr = __alloc_bootmem_core(bdata, size, align, goal, LOW32LIMIT); + ptr = __alloc_bootmem_core(bdata, size, align, goal, + ARCH_LOW_ADDRESS_LIMIT); if (ptr) return ptr; } @@ -478,5 +482,6 @@ void * __init __alloc_bootmem_low(unsigned long size, unsigned long align, void * __init __alloc_bootmem_low_node(pg_data_t *pgdat, unsigned long size, unsigned long align, unsigned long goal) { - return __alloc_bootmem_core(pgdat->bdata, size, align, goal, LOW32LIMIT); + return __alloc_bootmem_core(pgdat->bdata, size, align, goal, + ARCH_LOW_ADDRESS_LIMIT); } |