RDMA/mlx5: Support dma-buf based userspace memory region

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Implement the new driver method 'reg_user_mr_dmabuf'.  Utilize the core
functions to import dma-buf based memory region and update the mappings.

Add code to handle dma-buf related page fault.

Link: https://lore.kernel.org/r/1608067636-98073-5-git-send-email-jianxin.xiong@intel.com
Signed-off-by: Jianxin Xiong <jianxin.xiong@intel.com>
Reviewed-by: Sean Hefty <sean.hefty@intel.com>
Acked-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Acked-by: Christian Koenig <christian.koenig@amd.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

...

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Jianxin Xiong 2020-12-15 13:27:16 -08:00 • committed by Jason Gunthorpe

parent bfe0cc6eb2

commit 90da7dc820

4 changed files with 216 additions and 12 deletions

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2

drivers/infiniband/hw/mlx5/main.c

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18

drivers/infiniband/hw/mlx5/mlx5_ib.h

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119

drivers/infiniband/hw/mlx5/mr.c

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89

drivers/infiniband/hw/mlx5/odp.c

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