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(parent: 6f45b16) | patch
dma-mapping: Clarify valid conditions for CPU cache line overlap
authorLeon Romanovsky <leonro@nvidia.com>
Mon, 16 Mar 2026 19:06:47 +0000 (21:06 +0200)
committerMarek Szyprowski <m.szyprowski@samsung.com>
Fri, 20 Mar 2026 10:33:24 +0000 (11:33 +0100)
commit9bb0a4d6a4433b75274204b083dac8e515d2007d
treec25f33d517752a25113bcea0d1dc3ca8f8c0a238tree | snapshot
parent6f45b1604cf43945ef472ae4ef30354025307c19commit | diff
dma-mapping: Clarify valid conditions for CPU cache line overlap

Rename the DMA_ATTR_CPU_CACHE_CLEAN attribute to better reflect that it
is debugging aid to inform DMA core code that CPU cache line overlaps are
allowed, and refine the documentation describing its use.

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20260316-dma-debug-overlap-v3-3-1dde90a7f08b@nvidia.com
Documentation/core-api/dma-attributes.rst diff | blob | blame | history
drivers/virtio/virtio_ring.c diff | blob | blame | history
include/linux/dma-mapping.h diff | blob | blame | history
include/trace/events/dma.h diff | blob | blame | history
kernel/dma/debug.c diff | blob | blame | history
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