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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 /kernel/dma/Kconfig | |
| parent | ef1a85b6ca093abb00fbc38ea55fd9ae08ab05ef (diff) | |
| download | linux-stable-abdaf11ac18925ce8cc229e62e35b342d548ece2.tar.gz linux-stable-abdaf11ac18925ce8cc229e62e35b342d548ece2.tar.bz2 linux-stable-abdaf11ac18925ce8cc229e62e35b342d548ece2.zip | |
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 'kernel/dma/Kconfig')
| -rw-r--r-- | kernel/dma/Kconfig | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig index e7b801649f65..281785feb874 100644 --- a/kernel/dma/Kconfig +++ b/kernel/dma/Kconfig @@ -44,6 +44,12 @@ config ARCH_HAS_DMA_SET_MASK config ARCH_HAS_DMA_WRITE_COMBINE bool +# +# Select if the architectures provides the arch_dma_mark_clean hook +# +config ARCH_HAS_DMA_MARK_CLEAN + bool + config DMA_DECLARE_COHERENT bool |