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

[Leon Romanovsky <leon@kernel.org>]

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
> 
>