Commit 118bcd31 authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky

[S390] Optional ZONE_DMA for s390.

Disable ZONE_DMA on 31-bit. All memory is addressable by all
devices and we do not need any special memory pool.
Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 63db6e8d
......@@ -8,8 +8,8 @@ config MMU
default y
config ZONE_DMA
bool
default y
def_bool y
depends on 64BIT
config LOCKDEP_SUPPORT
bool
......
......@@ -141,7 +141,9 @@ void __init paging_init(void)
__raw_local_irq_ssm(ssm_mask);
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
#ifdef CONFIG_ZONE_DMA
max_zone_pfns[ZONE_DMA] = PFN_DOWN(MAX_DMA_ADDRESS);
#endif
max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
free_area_init_nodes(max_zone_pfns);
}
......
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