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| author | Leon Romanovsky <leonro@nvidia.com> | 2025-09-09 16:27:41 +0300 |
|---|---|---|
| committer | Marek Szyprowski <m.szyprowski@samsung.com> | 2025-09-12 00:18:21 +0200 |
| commit | ec818caebc0809722f47004db9f74b7ab355c583 (patch) | |
| tree | 5f78426de95c8db2cf4bb99c8d916ba40a6c9a56 /rust/helpers/bitmap.c | |
| parent | e1d69da24fb8ee02e13dcbc281f510f01332a7f8 (diff) | |
mm/hmm: properly take MMIO path
In case peer-to-peer transaction traverses through host bridge,
the IOMMU needs to have IOMMU_MMIO flag, together with skip of
CPU sync.
The latter was handled by provided DMA_ATTR_SKIP_CPU_SYNC flag,
but IOMMU flag was missed, due to assumption that such memory
can be treated as regular one.
Reuse newly introduced DMA attribute to properly take MMIO path.
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/998251caf3f9d1a3f6f8205f1f494c707fb4d8fa.1757423202.git.leonro@nvidia.com
Diffstat (limited to 'rust/helpers/bitmap.c')
0 files changed, 0 insertions, 0 deletions