From dfd54cbcc0b834652389ce99b5e656ea5f44a3c1 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Mon, 25 Sep 2006 23:31:33 -0700 Subject: [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 Cc: Martin Schwidefsky Signed-off-by: Heiko Carstens Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/bootmem.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) (limited to 'mm/bootmem.c') 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 #include +#include #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); } -- cgit v1.2.3-70-g09d2