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| author | Christoph Hellwig <hch@lst.de> | 2020-08-17 16:41:50 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2020-09-11 09:10:17 +0200 |
| commit | abdaf11ac18925ce8cc229e62e35b342d548ece2 (patch) | |
| tree | c32d6fd1625f6835947ca94130ca0942ef47ad01 /include/linux/dma-direct.h | |
| parent | ef1a85b6ca093abb00fbc38ea55fd9ae08ab05ef (diff) | |
dma-mapping: add (back) arch_dma_mark_clean for ia64
Add back a hook to optimize dcache flushing after reading executable
code using DMA. This gets ia64 out of the business of pretending to
be dma incoherent just for this optimization.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'include/linux/dma-direct.h')
| -rw-r--r-- | include/linux/dma-direct.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/dma-direct.h b/include/linux/dma-direct.h index 6e87225600ae..95e3e28bd93f 100644 --- a/include/linux/dma-direct.h +++ b/include/linux/dma-direct.h @@ -150,6 +150,9 @@ static inline void dma_direct_sync_single_for_cpu(struct device *dev, if (unlikely(is_swiotlb_buffer(paddr))) swiotlb_tbl_sync_single(dev, paddr, size, dir, SYNC_FOR_CPU); + + if (dir == DMA_FROM_DEVICE) + arch_dma_mark_clean(paddr, size); } static inline dma_addr_t dma_direct_map_page(struct device *dev, |