The following changes since commit 0af2f6be1b4281385b618cb86ad946eded089ac8: Linux 6.15-rc1 (2025-04-06 13:11:33 -0700) are available in the Git repository at: https://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux.git tags/dma-mapping-6.16-2025-05-26 for you to fetch changes up to 3ee7d9496342246f4353716f6bbf64c945ff6e2d: docs: core-api: document the IOVA-based API (2025-05-06 08:36:54 +0200) ---------------------------------------------------------------- dma-mapping updates for Linux 6.16: - new two step DMA mapping API, which is is a first step to a long path to provide alternatives to scatterlist and to remove hacks, abuses and design mistakes related to scatterlists; this new approach optimizes some calls to DMA-IOMMU layer and cache maintenance by batching them, reduces memory usage as it is no need to store mapped DMA addresses to unmap them, and reduces some function call overhead; it is a combination effort of many people, lead and developed by Christoph Hellwig and Leon Romanovsky ---------------------------------------------------------------- Christoph Hellwig (6): PCI/P2PDMA: Refactor the p2pdma mapping helpers dma-mapping: move the PCI P2PDMA mapping helpers to pci-p2pdma.h iommu: generalize the batched sync after map interface iommu/dma: Factor out a iommu_dma_map_swiotlb helper dma-mapping: add a dma_need_unmap helper docs: core-api: document the IOVA-based API Leon Romanovsky (3): iommu: add kernel-doc for iommu_unmap_fast dma-mapping: Provide an interface to allow allocate IOVA dma-mapping: Implement link/unlink ranges API Documentation/core-api/dma-api.rst | 71 ++++++ drivers/iommu/dma-iommu.c | 482 ++++++++++++++++++++++++++++++++----- drivers/iommu/iommu.c | 84 ++++--- drivers/pci/p2pdma.c | 38 +-- include/linux/dma-map-ops.h | 54 ----- include/linux/dma-mapping.h | 85 +++++++ include/linux/iommu.h | 4 + include/linux/pci-p2pdma.h | 85 +++++++ kernel/dma/direct.c | 44 ++-- kernel/dma/mapping.c | 18 ++ 10 files changed, 764 insertions(+), 201 deletions(-) ---------------------------------------------------------------- Thanks! Best regards Marek Szyprowski, PhD Samsung R&D Institute Poland
