From: Zhu Yanjun <yanjun.zhu@linux.dev>
To: jgg@ziepe.ca, leon@kernel.org, zyjzyj2000@gmail.com,
linux-rdma@vger.kernel.org, yanjun.zhu@linux.dev, mie@igel.co.jp
Subject: [PATCH 0/2] RDMA/rxe: Add dma-buf support for Soft-RoCE
Date: Wed, 25 Mar 2026 22:27:37 -0700 [thread overview]
Message-ID: <20260326052739.3778-1-yanjun.zhu@linux.dev> (raw)
This patchset introduces dma-buf support for the Soft-RoCE (RXE) driver.
By enabling dma-buf, RXE can now participate in zero-copy data transfers
with other providers (such as GPUs) that export memory via dma-buf fds.
Traditionally, RXE only supported user-space memory regions (UMEM) based
on system RAM. This change extends RXE’s capability to handle peer-to-peer
(P2P) like workflows in a software-defined RDMA environment.
This patchset pass the rdma-core tests with the following link for the
rdma-core:
https://github.com/linux-rdma/rdma-core/pull/1055
Zhu Yanjun (2):
RDMA/umem: Change for rdma devices has not dma device
RDMA/rxe: Add dma-buf support
drivers/infiniband/core/umem_dmabuf.c | 35 ++++++++++-
drivers/infiniband/sw/rxe/rxe.c | 2 +
drivers/infiniband/sw/rxe/rxe_loc.h | 2 +
drivers/infiniband/sw/rxe/rxe_mr.c | 89 ++++++++++++++++++++++++---
drivers/infiniband/sw/rxe/rxe_odp.c | 2 +-
drivers/infiniband/sw/rxe/rxe_verbs.c | 40 ++++++++++++
drivers/infiniband/sw/rxe/rxe_verbs.h | 2 +-
include/rdma/ib_umem.h | 1 +
8 files changed, 161 insertions(+), 12 deletions(-)
--
2.53.0
next reply other threads:[~2026-03-26 5:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-26 5:27 Zhu Yanjun [this message]
2026-03-26 5:27 ` [PATCH 1/2] RDMA/umem: Change for rdma devices has not dma device Zhu Yanjun
2026-03-26 5:27 ` [PATCH 2/2] RDMA/rxe: Add dma-buf support Zhu Yanjun
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