Christoph Hellwig 5904c758e0 dma-direct: add a CONFIG_ARCH_HAS_DMA_ALLOC symbol ...

[ Upstream commit 2c8ed1b960 ]

Instead of using arch_dma_alloc if none of the generic coherent
allocators are used, require the architectures to explicitly opt into
providing it.  This will used to deal with the case of m68knommu and
coldfire where we can't do any coherent allocations whatsoever, and
also makes it clear that arch_dma_alloc is a last resort.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Greg Ungerer <gerg@linux-m68k.org>
Tested-by: Greg Ungerer <gerg@linux-m68k.org>
Stable-dep-of: 1fd495ef09 ("m68k: Define NR_CPUS to 1")
Signed-off-by: Sasha Levin <sashal@kernel.org>

2026-08-23 14:20:06 +02:00

..

coherent.c

…

contiguous.c

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debug.c

dma-debug: don't report false positives with DMA_BOUNCE_UNALIGNED_KMALLOC

2025-10-29 14:07:02 +01:00

debug.h

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direct.c

dma-direct: add a CONFIG_ARCH_HAS_DMA_ALLOC symbol

2026-08-23 14:20:06 +02:00

direct.h

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dummy.c

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Kconfig

dma-direct: add a CONFIG_ARCH_HAS_DMA_ALLOC symbol

2026-08-23 14:20:06 +02:00

Makefile

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map_benchmark.c

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mapping.c

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ops_helpers.c

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pool.c

dma/pool: distinguish between missing and exhausted atomic pools

2026-02-06 16:48:24 +01:00

remap.c

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swiotlb.c

dma: swiotlb: add KMSAN annotations to swiotlb_bounce()

2026-04-02 13:07:16 +02:00