From: Pekka Enberg <penberg@kernel.org>
To: x86@kernel.org
Cc: linux-kernel@vger.kernel.org, Tejun Heo <tj@kernel.org>,
Yinghai Lu <yinghai@kernel.org>,
David Rientjes <rientjes@google.com>,
Arun Sharma <asharma@fb.com>, Pekka Enberg <penberg@kernel.org>,
"H. Peter Anvin" <hpa@linux.intel.com>
Subject: [PATCH v2 1/7] x86, mm: Use MAX_DMA_PFN for ZONE_DMA on 32-bit
Date: Tue, 1 Nov 2011 15:58:16 +0200 [thread overview]
Message-ID: <1320155902-10424-1-git-send-email-penberg@kernel.org> (raw)
Use MAX_DMA_PFN which represents the 16 MB ISA DMA limit on 32-bit x86 just
like we do on 64-bit.
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Cc: H. Peter Anvin <hpa@linux.intel.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
---
arch/x86/mm/init_32.c | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 29f7c6d..434c97d 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -679,8 +679,7 @@ static void __init zone_sizes_init(void)
unsigned long max_zone_pfns[MAX_NR_ZONES];
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
#ifdef CONFIG_ZONE_DMA
- max_zone_pfns[ZONE_DMA] =
- virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;
+ max_zone_pfns[ZONE_DMA] = MAX_DMA_PFN;
#endif
max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
#ifdef CONFIG_HIGHMEM
--
1.7.6.4
next reply other threads:[~2011-11-01 13:58 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-01 13:58 Pekka Enberg [this message]
2011-11-01 13:58 ` [PATCH v2 2/7] x86, mm: Move zone init from paging_init() on 64-bit Pekka Enberg
2011-11-18 23:23 ` [tip:x86/mm] " tip-bot for Pekka Enberg
2011-11-01 13:58 ` [PATCH v2 3/7] x86, mm: Use max_pfn instead of highend_pfn Pekka Enberg
2011-11-18 23:24 ` [tip:x86/mm] " tip-bot for Pekka Enberg
2011-11-01 13:58 ` [PATCH v2 4/7] x86, mm: Wrap ZONE_DMA32 with CONFIG_ZONE_DMA32 Pekka Enberg
2011-11-18 23:25 ` [tip:x86/mm] " tip-bot for Pekka Enberg
2011-11-01 13:58 ` [PATCH v2 5/7] x86, mm: Use max_low_pfn for ZONE_NORMAL on 64-bit Pekka Enberg
2011-11-18 23:25 ` [tip:x86/mm] " tip-bot for Pekka Enberg
2011-11-01 13:58 ` [PATCH v2 6/7] x86, mm: Prepare zone_sizes_init() for unification Pekka Enberg
2011-11-18 23:26 ` [tip:x86/mm] " tip-bot for Pekka Enberg
2011-11-01 13:58 ` [PATCH v2 7/7] x86, mm: Unify zone_sizes_init() Pekka Enberg
2011-11-18 23:27 ` [tip:x86/mm] " tip-bot for Pekka Enberg
2011-11-08 14:43 ` [PATCH v2 1/7] x86, mm: Use MAX_DMA_PFN for ZONE_DMA on 32-bit Pekka Enberg
2011-11-11 9:21 ` Ingo Molnar
2011-11-18 23:22 ` [tip:x86/mm] " tip-bot for Pekka Enberg
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