Re: [PATCH vfio-next 0/3] mlx5 VFIO PCI DMA conversion

[Alex Williamson <alex.williamson@redhat.com>]

On Tue, 20 May 2025 16:46:29 +0300
Leon Romanovsky <leon@kernel.org> wrote:

> Hi Alex,
> 
> This series presents subset of new DMA-API patchset [1] specific
> for VFIO subsystem, with some small changes:
> 1. Change commit message in first patch.
> 2. Removed WARN_ON_ONCE DMA_NONE checks from third patch.
> 
> ------------------------------------------------------------------
> It is based on Marek's dma-mapping-for-6.16-two-step-api branch, so merging
> now will allow us to reduce possible rebase errors in mlx5 vfio code and give
> enough time to start to work on second driver conversion. Such conversion will
> allow us to generalize the API for VFIO kernel drivers, in similar way that
> was done for RDMA, HMM and block layers.
> 
> Thanks
> 
> [1] [PATCH v10 00/24] Provide a new two step DMA mapping API
> https://lore.kernel.org/all/cover.1745831017.git.leon@kernel.org/
> 
> Leon Romanovsky (3):
>   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
> 
>  drivers/vfio/pci/mlx5/cmd.c  | 371 +++++++++++++++++------------------
>  drivers/vfio/pci/mlx5/cmd.h  |  35 ++--
>  drivers/vfio/pci/mlx5/main.c |  87 ++++----
>  3 files changed, 235 insertions(+), 258 deletions(-)

Applied to vfio next branch for v6.16.  Thanks,

Alex