Re: [PATCH v7 00/17] Provide a new two step DMA mapping API

Leon Romanovsky
2025-02-20T13:04:23Z

On Wed, Feb 05, 2025 at 04:40:20PM +0200, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro@nvidia.com>
>
> Changelog:
> v7:
> * Rebased to v6.14-rc1

<...>

> 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 (11):
> iommu: add kernel-doc for iommu_unmap and iommu_unmap_fast
> dma-mapping: Provide an interface to allow allocate IOVA
> dma-mapping: Implement link/unlink ranges API
> mm/hmm: let users to tag specific PFN with DMA mapped bit
> mm/hmm: provide generic DMA managing logic
> RDMA/umem: Store ODP access mask information in PFN
> RDMA/core: Convert UMEM ODP DMA mapping to caching IOVA and page
> linkage
> RDMA/umem: Separate implicit ODP initialization from explicit ODP
> vfio/mlx5: Explicitly use number of pages instead of allocated length
> vfio/mlx5: Rewrite create mkey flow to allow better code reuse
> vfio/mlx5: Enable the DMA link API
>
> Documentation/core-api/dma-api.rst | 70 ++++
> drivers/infiniband/core/umem_odp.c | 250 +++++---------
> drivers/infiniband/hw/mlx5/mlx5_ib.h | 12 +-
> drivers/infiniband/hw/mlx5/odp.c | 65 ++--
> drivers/infiniband/hw/mlx5/umr.c | 12 +-
> drivers/iommu/dma-iommu.c | 468 +++++++++++++++++++++++----
> drivers/iommu/iommu.c | 84 ++---
> drivers/pci/p2pdma.c | 38 +--
> drivers/vfio/pci/mlx5/cmd.c | 375 +++++++++++----------
> drivers/vfio/pci/mlx5/cmd.h | 35 +-
> drivers/vfio/pci/mlx5/main.c | 87 +++--
> include/linux/dma-map-ops.h | 54 ----
> include/linux/dma-mapping.h | 85 +++++
> include/linux/hmm-dma.h | 33 ++
> include/linux/hmm.h | 21 ++
> include/linux/iommu.h | 4 +
> include/linux/pci-p2pdma.h | 84 +++++
> include/rdma/ib_umem_odp.h | 25 +-
> kernel/dma/direct.c | 44 +--
> kernel/dma/mapping.c | 18 ++
> mm/hmm.c | 264 +++++++++++++--
> 21 files changed, 1435 insertions(+), 693 deletions(-)
> create mode 100644 include/linux/hmm-dma.h

Kind reminder.

Thanks

>
> --
> 2.48.1
>
>