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| author | Will Deacon <will@kernel.org> | 2024-03-08 18:28:29 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2024-03-13 21:39:34 +0300 |
| commit | 14cebf689a78e8a1c041138af221ef6eac6bc7da (patch) | |
| tree | a556053871a62a03b875d023c52449470416b361 /drivers/iommu/dma-iommu.c | |
| parent | afc5aa46ed560f01ceda897c053c6a40c77ce5c4 (diff) | |
| download | linux-14cebf689a78e8a1c041138af221ef6eac6bc7da.tar.xz | |
swiotlb: Reinstate page-alignment for mappings >= PAGE_SIZE
For swiotlb allocations >= PAGE_SIZE, the slab search historically
adjusted the stride to avoid checking unaligned slots. This had the
side-effect of aligning large mapping requests to PAGE_SIZE, but that
was broken by 0eee5ae10256 ("swiotlb: fix slot alignment checks").
Since this alignment could be relied upon drivers, reinstate PAGE_SIZE
alignment for swiotlb mappings >= PAGE_SIZE.
Reported-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Petr Tesarik <petr.tesarik1@huawei-partners.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/iommu/dma-iommu.c')
0 files changed, 0 insertions, 0 deletions