Commit 95b0e655 authored Oct 09, 2014 by Marek Szyprowski Committed by Linus Torvalds Oct 09, 2014

ARM: mm: don't limit default CMA region only to low memory



DMA-mapping supports CMA regions places either in low or high memory, so
there is no longer needed to limit default CMA regions only to low memory.
 The real limit is still defined by architecture specific DMA limit.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reported-by: Russell King - ARM Linux <linux@arm.linux.org.uk>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Cc: Daniel Drake <drake@endlessm.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent f7426b98

arch/arm/mm/init.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -322,7 +322,7 @@ void __init arm_memblock_init(const struct machine_desc *mdesc)
		* reserve memory for DMA contigouos allocations,
		* must come from DMA area inside low memory
		*/
		dma_contiguous_reserve(min(arm_dma_limit, arm_lowmem_limit));
		dma_contiguous_reserve(arm_dma_limit);

		arm_memblock_steal_permitted = false;
		memblock_dump_all();

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