dma-mapping: add an arch_dma_supported hook

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To implement the x86 forbid_dac and iommu_sac_force we want an arch hook
so that it can apply the global options across all dma_map_ops
implementations.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

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This commit is contained in:

Christoph Hellwig 2017-12-23 11:01:41 +01:00

parent 57bf5a8963

commit cea9d03c82

3 changed files with 26 additions and 7 deletions

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3

arch/x86/include/asm/dma-mapping.h

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19

arch/x86/kernel/pci-dma.c

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11

include/linux/dma-mapping.h

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