Message ID | 20240228133930.15400-1-will@kernel.org |
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Series |
Fix double allocation in swiotlb_alloc()
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Message
Will Deacon
Feb. 28, 2024, 1:39 p.m. UTC
Hi all, This is version five of the patches which I previously posted at: v1: https://lore.kernel.org/r/20240126151956.10014-1-will@kernel.org v2: https://lore.kernel.org/r/20240131122543.14791-1-will@kernel.org v3: https://lore.kernel.org/r/20240205190127.20685-1-will@kernel.org v4: https://lore.kernel.org/r/20240221113504.7161-1-will@kernel.org Cheers again to everybody who helped to review and test the last version. Changes since v4 include: - Remove unnecessary 'is_swiotlb_active()' from patch 5. Nicolin: I didn't add your Tested-by because of this, so if you can take it for another spin, that would be fantastic. - New patch removing redundant stride adjustment for allocations of PAGE_SIZE or more. - Commit message tweaks and addition of tags from reviewers and testers. The final patch is a cleanup, so I'm happy to post it again after the merge window if it doesn't make it this time around. The rest are fixes and, even though patch five doesn't solve the general problem, it's sufficient to fix NVME for Nicolin and is definitely an improvement over what we currently have. Thanks, Will Cc: iommu@lists.linux.dev Cc: Christoph Hellwig <hch@lst.de> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Petr Tesarik <petr.tesarik1@huawei-partners.com> Cc: Dexuan Cui <decui@microsoft.com> Cc: Nicolin Chen <nicolinc@nvidia.com> Cc: Michael Kelley <mhklinux@outlook.com> --->8 Nicolin Chen (1): iommu/dma: Force swiotlb_max_mapping_size on an untrusted device Will Deacon (5): swiotlb: Fix double-allocation of slots due to broken alignment handling swiotlb: Enforce page alignment in swiotlb_alloc() swiotlb: Honour dma_alloc_coherent() alignment in swiotlb_alloc() swiotlb: Fix alignment checks when both allocation and DMA masks are present swiotlb: Remove pointless stride adjustment for allocations >= PAGE_SIZE drivers/iommu/dma-iommu.c | 9 +++++++++ kernel/dma/swiotlb.c | 36 +++++++++++++++++++++++------------- 2 files changed, 32 insertions(+), 13 deletions(-)