提交 dbed452a 编写于 作者: D David Rientjes 提交者: Christoph Hellwig

dma-pool: decouple DMA_REMAP from DMA_COHERENT_POOL

DMA_REMAP is an unnecessary requirement for AMD SEV, which requires
DMA_COHERENT_POOL, so avoid selecting it when it is otherwise unnecessary.

The only other requirement for DMA coherent pools is DMA_DIRECT_REMAP, so
ensure that properly selects the config option when needed.

Fixes: 82fef0ad ("x86/mm: unencrypted non-blocking DMA allocations use coherent pools")
Reported-by: NAlex Xu (Hello71) <alex_y_xu@yahoo.ca>
Signed-off-by: NDavid Rientjes <rientjes@google.com>
Tested-by: NAlex Xu (Hello71) <alex_y_xu@yahoo.ca>
Signed-off-by: NChristoph Hellwig <hch@lst.de>
上级 3ee06a6d
......@@ -73,18 +73,18 @@ config SWIOTLB
config DMA_NONCOHERENT_MMAP
bool
config DMA_COHERENT_POOL
bool
config DMA_REMAP
bool
depends on MMU
select GENERIC_ALLOCATOR
select DMA_NONCOHERENT_MMAP
bool
config DMA_COHERENT_POOL
bool
select DMA_REMAP
config DMA_DIRECT_REMAP
bool
select DMA_REMAP
select DMA_COHERENT_POOL
config DMA_CMA
......
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