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Christoph Hellwig 6635e6ba16 dma-direct: don't fail on highmem CMA pages in dma_direct_alloc_pages

[ Upstream commit 92826e9675 ]

When dma_direct_alloc_pages encounters a highmem page it just gives up
currently.  But what we really should do is to try memory using the
page allocator instead - without this platforms with a global highmem
CMA pool will fail all dma_alloc_pages allocations.

Fixes: efa70f2fdc ("dma-mapping: add a new dma_alloc_pages API")
Reported-by: Mark O'Neill <mao@tumblingdice.co.uk>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2022-06-09 10:22:56 +02:00

coherent.c

dma-mapping: make the global coherent pool conditional

2021-08-19 09:02:39 +02:00

contiguous.c

dma-contiguous: fix a typo error in a comment

2020-11-27 10:33:42 +01:00

debug.c

dma-debug: change allocation mode from GFP_NOWAIT to GFP_ATIOMIC

2022-06-09 10:22:37 +02:00

debug.h

dma-debug: teach add_dma_entry() about DMA_ATTR_SKIP_CPU_SYNC