Hi, The previous version of this patch [1] didn't make it into 4.17 because of the (compile-time) conflicts with the generic dma-direct.h changes. I'm reposting it for 4.18 with some minor changes:
- phys_to_dma()/dma_to_phys() now gained underscores to match the generic dma-direct.h implementation - the patch is split in three to make the changes clearer to the reviewers If at some point in the future the generic swiotlb code gain non-choerent DMA awareness, the last patch in the series could be refactored. In the meantime, the simplest, non-intrusive approach is to select ARCH_HAS_PHYS_TO_DMA on arm64 and force bounce buffering through an arch-specific dma_capable() implementation. Thanks, Catalin [1] http://lkml.kernel.org/r/20180228184720.25467-1-catalin.mari...@arm.com Catalin Marinas (3): Revert "arm64: Increase the max granular size" arm64: Increase ARCH_DMA_MINALIGN to 128 arm64: Force swiotlb bounce buffering for non-coherent DMA with large CWG arch/arm64/Kconfig | 1 + arch/arm64/include/asm/cache.h | 6 +++--- arch/arm64/include/asm/dma-direct.h | 43 +++++++++++++++++++++++++++++++++++++ arch/arm64/kernel/cpufeature.c | 9 ++------ arch/arm64/mm/dma-mapping.c | 17 +++++++++++++++ arch/arm64/mm/init.c | 3 ++- 6 files changed, 68 insertions(+), 11 deletions(-) create mode 100644 arch/arm64/include/asm/dma-direct.h _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
