iommu/io-pgtable: Support non-coherent page tables

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Describe the memory related to page table walks as non-cacheable for
iommu instances that are not DMA coherent.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
[will: Use cfg->coherent_walk, fix arm-v7s, ensure outer-shareable for NC]
Signed-off-by: Will Deacon <will@kernel.org>

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Bjorn Andersson 2019-05-15 16:32:34 -07:00 • committed by Will Deacon

parent 4f41845b34

commit 9e6ea59f3f

2 changed files with 14 additions and 5 deletions

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7

drivers/iommu/io-pgtable-arm-v7s.c

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12

drivers/iommu/io-pgtable-arm.c

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