On Sun, 01 Feb 2026 16:34:03 +0200, Edward Srouji wrote:
This patch series introduces dma-buf export support for RDMA/InfiniBand devices, enabling userspace applications to export RDMA PCI-backed memory regions (such as device memory or mlx5 UAR pages) as dma-buf file descriptors.
This allows PCI device memory to be shared with other kernel subsystems (e.g., graphics or media) or between userspace processes, via the standard dma-buf interface, avoiding unnecessary copies and enabling efficient peer-to-peer (P2P) DMA transfers. See [1] for background on dma-buf.
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Applied, thanks!
[1/3] RDMA/uverbs: Support external FD uobjects https://git.kernel.org/rdma/rdma/c/6b848074a32078 [2/3] RDMA/uverbs: Add DMABUF object type and operations https://git.kernel.org/rdma/rdma/c/e6738fe6cad448 [3/3] RDMA/mlx5: Implement DMABUF export ops https://git.kernel.org/rdma/rdma/c/992a14bb2150a1
Best regards,