From 118bcd31b309d12638f67729d5d96d4974750249 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Wed, 21 Feb 2007 10:55:12 +0100 Subject: [PATCH] [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: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/Kconfig | 4 ++-- arch/s390/mm/init.c | 2 ++ 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index eaaac3788110..d9425f59be91 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -8,8 +8,8 @@ config MMU default y config ZONE_DMA - bool - default y + def_bool y + depends on 64BIT config LOCKDEP_SUPPORT bool diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index b3e7c45efb63..916b72a8cde8 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -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); } -- 2.20.1