The patch titled
Subject: ARM: mm: don't limit default CMA region only to low memory
has been added to the -mm tree. Its filename is
arm-mm-dont-limit-default-cma-region-only-to-low-memory.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/arm-mm-dont-limit-default-cma-region-only-to-low-memory.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/arm-mm-dont-limit-default-cma-region-only-to-low-memory.patch
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------------------------------------------------------
From: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Subject: 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@xxxxxxxxxxx>
Reported-by: Russell King - ARM Linux <linux@xxxxxxxxxxxxxxxx>
Acked-by: Michal Nazarewicz <mina86@xxxxxxxxxx>
Cc: Daniel Drake <drake@xxxxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arm/mm/init.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN arch/arm/mm/init.c~arm-mm-dont-limit-default-cma-region-only-to-low-memory arch/arm/mm/init.c
--- a/arch/arm/mm/init.c~arm-mm-dont-limit-default-cma-region-only-to-low-memory
+++ a/arch/arm/mm/init.c
@@ -322,7 +322,7 @@ void __init arm_memblock_init(const stru
* 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();
_
Patches currently in -mm which might be from m.szyprowski@xxxxxxxxxxx are
mm-cma-adjust-address-limit-to-avoid-hitting-low-high-memory-boundary.patch
arm-mm-dont-limit-default-cma-region-only-to-low-memory.patch
linux-next.patch
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