dma mapping helpers · Supported

Maintainers

• M Marek Szyprowski <m.szyprowski@samsung.com>
• R Robin Murphy <robin.murphy@arm.com>

Paths

• F include/asm-generic/dma-mapping.h
• F include/linux/dma-direct.h
• F include/linux/dma-map-ops.h
• F include/linux/dma-mapping.h
• F include/linux/swiotlb.h
• F kernel/dma/

Last 30 days

Recent patches

Most-recent 30 patches in this subsystem on linux-alpha (capped at 30), ordered by date desc.

• STALE140d LANDED: 6 (6M) [PATCH v5 14/14] dma-mapping: remove unused map_page callback
  2025-10-15 · Leon Romanovsky <leon@kernel.org>
• STALE140d LANDED: 6 (6M) [PATCH v5 06/14] dma-mapping: remove unused mapping resource callbacks
  2025-10-15 · Leon Romanovsky <leon@kernel.org>
• STALE140d LANDED: 6 (6M) [PATCH v5 01/14] dma-mapping: prepare dma_map_ops to conversion to physical address
  2025-10-15 · Leon Romanovsky <leon@kernel.org>
• STALE140d LANDED: 6 (6M) [PATCH v5 02/14] dma-mapping: convert dummy ops to physical address mapping
  2025-10-15 · Leon Romanovsky <leon@kernel.org>
• STALE274d [PATCH v1 9/9] dma-mapping: remove unused map_page callback
  2025-09-28 · Leon Romanovsky <leon@kernel.org>
• STALE282d [PATCH 9/9] dma-mapping: remove unused map_page callback
  2025-09-18 · Leon Romanovsky <leon@kernel.org>
• STALE672d REVIEWED: 7 (6M) [PATCH 2/2] dma-mapping: clearly mark DMA ops as an architecture feature
  2024-08-28 · Christoph Hellwig <hch@lst.de>
• STALE679d [PATCH] dma-mapping: clear mark DMA ops as an architecture feature
  2024-08-24 · Christoph Hellwig <hch@lst.de>
• STALE1239d LANDED [PATCH] dma-mapping: no need to pass a bus_type into get_arch_dma_ops()
  2023-02-14 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE1741d [PATCH v2 6/6] memblock: use memblock_free for freeing virtual pointers
  2021-09-30 · Mike Rapoport <rppt@kernel.org>
• STALE1741d [PATCH v2 5/6] memblock: rename memblock_free to memblock_phys_free
  2021-09-30 · Mike Rapoport <rppt@kernel.org>
• STALE1741d [PATCH v2 3/6] memblock: drop memblock_free_early_nid() and memblock_free_early()
  2021-09-30 · Mike Rapoport <rppt@kernel.org>
• STALE1747d [PATCH 3/3] memblock: cleanup memblock_free interface
  2021-09-23 · Mike Rapoport <rppt@kernel.org>
• STALE1793d [PATCH v3 01/21] dma-mapping: Allow map_sg() ops to return negative error codes
  2021-07-29 · Logan Gunthorpe <logang@deltatee.com>
• STALE1793d [PATCH v3 20/21] dma-mapping: return error code from dma_dummy_map_sg()
  2021-07-29 · Logan Gunthorpe <logang@deltatee.com>
• STALE1793d [PATCH v3 21/21] dma-mapping: Disallow .map_sg operations from returning zero on error
  2021-07-29 · Logan Gunthorpe <logang@deltatee.com>
• STALE1793d [PATCH v3 02/21] dma-direct: Return appropriate error code from dma_direct_map_sg()
  2021-07-29 · Logan Gunthorpe <logang@deltatee.com>
• STALE1800d [PATCH v2 01/21] dma-mapping: Allow map_sg() ops to return negative error codes
  2021-07-23 · Logan Gunthorpe <logang@deltatee.com>
• STALE1800d [PATCH v2 21/21] dma-mapping: Disallow .map_sg operations from returning zero on error
  2021-07-23 · Logan Gunthorpe <logang@deltatee.com>
• STALE1800d [PATCH v2 20/21] dma-mapping: return error code from dma_dummy_map_sg()
  2021-07-23 · Logan Gunthorpe <logang@deltatee.com>
• STALE1800d [PATCH v2 02/21] dma-direct: Return appropriate error code from dma_direct_map_sg()
  2021-07-23 · Logan Gunthorpe <logang@deltatee.com>
• STALE1814d [PATCH v1 15/16] dma-mapping: return error code from dma_dummy_map_sg()
  2021-07-15 · Logan Gunthorpe <logang@deltatee.com>
• STALE1814d [PATCH v1 16/16] dma-mapping: Disallow .map_sg operations from returning zero on error
  2021-07-15 · Logan Gunthorpe <logang@deltatee.com>
• STALE1814d [PATCH v1 01/16] dma-mapping: Allow map_sg() ops to return negative error codes
  2021-07-15 · Logan Gunthorpe <logang@deltatee.com>
• STALE1814d [PATCH v1 02/16] dma-direct: Return appropriate error code from dma_direct_map_sg()
  2021-07-15 · Logan Gunthorpe <logang@deltatee.com>
• STALE2133d [PATCH 1/2] dma-mapping: introduce dma_get_seg_boundary_nr_pages()
  2020-09-01 · Nicolin Chen <nicoleotsuka@gmail.com>
• STALE2133d [PATCH 2/2] dma-mapping: set default segment_boundary_mask to ULONG_MAX
  2020-09-01 · Nicolin Chen <nicoleotsuka@gmail.com>
• STALE2135d Re: [RESEND][PATCH 0/7] Avoid overflow at boundary_size
  2020-09-01 · Christoph Hellwig <hch@lst.de>
• STALE2468d REVIEWED: 18 (18M) [PATCH v2 21/21] memblock: drop memblock_alloc_*_nopanic() variants
  2019-01-21 · Mike Rapoport <hidden>
• STALE2468d [PATCH v2 18/21] swiotlb: add checks for the return value of memblock_alloc*()
  2019-01-21 · Mike Rapoport <hidden>