RDMA/mlx5: use kmalloc() for UMR translation buffers

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mlx5r_umr_alloc_xlt() allocates physically contiguous scratch buffers
that are DMA mapped only in the DMA_TO_DEVICE direction. kmalloc()
provides the required contiguity and alignment for these sizes while
preserving the existing GFP allocation policy.

The emergency translation buffer has the same requirements. Convert all
of these UMR buffers to kmalloc() and release them with kfree(), which no
longer requires the caller to supply the allocation order.

Link: https://patch.msgid.link/20260715-get_pages-to-kmalloc-v1-4-b0b7fce288be@nvidia.com
Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>

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Leon Romanovsky 2026-07-16 05:03:32 -04:00 • committed by Leon Romanovsky

parent ed3760b376

commit b2022068de

2 changed files with 9 additions and 10 deletions

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8

drivers/infiniband/hw/mlx5/main.c

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11

drivers/infiniband/hw/mlx5/umr.c

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