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

Most active threads (last 7 days)

COOLING5d [PATCH v2] swiotlb: introduce Kconfig option for compile-time default pool size
2026-07-02 14:09 · 0 replies in 7d · <hidden>

Recent patches

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

COOLING5d [PATCH v2] swiotlb: introduce Kconfig option for compile-time default pool size
2026-07-02 · <hidden>
STALE109d LANDED [PATCH v3 5/8] dma-direct: prevent SWIOTLB path when DMA_ATTR_REQUIRE_COHERENT is set
2026-03-16 · Leon Romanovsky <leon@kernel.org>
STALE109d LANDED [PATCH v3 3/8] dma-mapping: Clarify valid conditions for CPU cache line overlap
2026-03-16 · Leon Romanovsky <leon@kernel.org>
STALE109d LANDED [PATCH v3 4/8] dma-mapping: Introduce DMA require coherency attribute
2026-03-16 · Leon Romanovsky <leon@kernel.org>
STALE109d LANDED [PATCH v3 1/8] dma-debug: Allow multiple invocations of overlapping entries
2026-03-16 · Leon Romanovsky <leon@kernel.org>
STALE117d [PATCH v2 5/8] dma-direct: prevent SWIOTLB path when DMA_ATTR_REQUIRE_COHERENT is set
2026-03-11 · Leon Romanovsky <leon@kernel.org>
STALE117d [PATCH v2 4/8] dma-mapping: Introduce DMA require coherency attribute
2026-03-11 · Leon Romanovsky <leon@kernel.org>
STALE117d [PATCH v2 3/8] dma-mapping: Clarify valid conditions for CPU cache line overlap
2026-03-11 · Leon Romanovsky <leon@kernel.org>
STALE117d [PATCH v2 1/8] dma-debug: Allow multiple invocations of overlapping entries
2026-03-11 · Leon Romanovsky <leon@kernel.org>
STALE119d [PATCH 2/3] dma-mapping: Clarify valid conditions for CPU cache line overlap
2026-03-07 · Leon Romanovsky <leon@kernel.org>
STALE119d [PATCH 1/3] dma-debug: Allow multiple invocations of overlapping entries
2026-03-07 · Leon Romanovsky <leon@kernel.org>
STALE159d [PATCH v2 05/15] dma-debug: track cache clean flag in entries
2026-01-05 · "Michael S. Tsirkin" <mst@redhat.com>
STALE159d [PATCH v2 03/15] dma-mapping: add DMA_ATTR_CPU_CACHE_CLEAN
2026-01-05 · "Michael S. Tsirkin" <mst@redhat.com>
STALE159d [PATCH v2 01/15] dma-mapping: add __dma_from_device_group_begin()/end()
2026-01-05 · "Michael S. Tsirkin" <mst@redhat.com>
STALE183d [PATCH RFC 05/13] dma-debug: track cache clean flag in entries
2025-12-30 · "Michael S. Tsirkin" <mst@redhat.com>
STALE183d [PATCH RFC 03/13] dma-mapping: add DMA_ATTR_CPU_CACHE_CLEAN
2025-12-30 · "Michael S. Tsirkin" <mst@redhat.com>
STALE183d [PATCH RFC 01/13] dma-mapping: add __dma_from_device_align_begin/end
2025-12-30 · "Michael S. Tsirkin" <mst@redhat.com>
STALE186d LANDED: 2 (0M) [PATCH v9 02/11] PCI/P2PDMA: Simplify bus address mapping API
2025-11-20 · Leon Romanovsky <leon@kernel.org>
STALE229d REVIEWED: 2 (0M) [PATCH v8 02/11] PCI/P2PDMA: Simplify bus address mapping API
2025-11-11 · Leon Romanovsky <leon@kernel.org>
STALE231d REVIEWED: 2 (0M) [PATCH v7 02/11] PCI/P2PDMA: Simplify bus address mapping API
2025-11-06 · Leon Romanovsky <leon@kernel.org>
STALE202d [PATCH v6 02/11] PCI/P2PDMA: Simplify bus address mapping API
2025-11-02 · Leon Romanovsky <leon@kernel.org>
STALE250d [PATCH v2 8/8] mm: integrate GCMA with CMA using dt-bindings
2025-10-26 · Suren Baghdasaryan <surenb@google.com>
STALE262d LANDED: 1 (1M) [PATCH v8 4/5] dma: contiguous: Reserve default CMA heap
2025-10-13 · Maxime Ripard <mripard@kernel.org>
STALE262d LANDED: 1 (1M) [PATCH v8 3/5] dma: contiguous: Register reusable CMA regions at boot
2025-10-13 · Maxime Ripard <mripard@kernel.org>
STALE267d [PATCH 8/8] mm: integrate GCMA with CMA using dt-bindings
2025-10-10 · Suren Baghdasaryan <surenb@google.com>
STALE287d LANDED: 6 (6M) [PATCH v6 09/16] dma-mapping: implement DMA_ATTR_MMIO for dma_(un)map_page_attrs()
2025-09-09 · Leon Romanovsky <leon@kernel.org>
STALE287d LANDED: 7 (7M) [PATCH v6 11/16] dma-mapping: export new dma_*map_phys() interface
2025-09-09 · Leon Romanovsky <leon@kernel.org>
STALE287d LANDED: 6 (6M) [PATCH v6 05/16] iommu/dma: rename iommu_dma_*map_page to iommu_dma_*map_phys
2025-09-09 · Leon Romanovsky <leon@kernel.org>
STALE287d LANDED: 6 (6M) [PATCH v6 08/16] kmsan: convert kmsan_handle_dma to use physical addresses
2025-09-09 · Leon Romanovsky <leon@kernel.org>
STALE287d LANDED: 6 (6M) [PATCH v6 07/16] dma-mapping: convert dma_direct_*map_page to be phys_addr_t based
2025-09-09 · Leon Romanovsky <leon@kernel.org>

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

STALE183d [PATCH RFC 03/13] dma-mapping: add DMA_ATTR_CPU_CACHE_CLEAN
2025-12-30 · "Michael S. Tsirkin" <mst@redhat.com>
STALE119d [PATCH 1/3] dma-debug: Allow multiple invocations of overlapping entries
2026-03-07 · Leon Romanovsky <leon@kernel.org>
STALE117d [PATCH v2 1/8] dma-debug: Allow multiple invocations of overlapping entries
2026-03-11 · Leon Romanovsky <leon@kernel.org>
STALE117d [PATCH v2 3/8] dma-mapping: Clarify valid conditions for CPU cache line overlap
2026-03-11 · Leon Romanovsky <leon@kernel.org>
STALE109d LANDED [PATCH v3 1/8] dma-debug: Allow multiple invocations of overlapping entries
2026-03-16 · Leon Romanovsky <leon@kernel.org>
STALE109d LANDED [PATCH v3 3/8] dma-mapping: Clarify valid conditions for CPU cache line overlap
2026-03-16 · Leon Romanovsky <leon@kernel.org>
STALE109d LANDED [PATCH v3 5/8] dma-direct: prevent SWIOTLB path when DMA_ATTR_REQUIRE_COHERENT is set
2026-03-16 · Leon Romanovsky <leon@kernel.org>

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