From: Zhu Yanjun <zyjzyj2000@gmail.com>
To: Shunsuke Mie <mie@igel.co.jp>
Cc: "Christian König" <christian.koenig@amd.com>,
"Alex Deucher" <alexander.deucher@amd.com>,
"Daniel Vetter" <daniel.vetter@ffwll.ch>,
"Doug Ledford" <dledford@redhat.com>,
"Jason Gunthorpe" <jgg@ziepe.ca>,
"Jianxin Xiong" <jianxin.xiong@intel.com>,
"Leon Romanovsky" <leon@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
"RDMA mailing list" <linux-rdma@vger.kernel.org>,
dhobsong@igel.co.jp, taki@igel.co.jp, etom@igel.co.jp
Subject: Re: [RFC PATCH 0/3] RDMA/rxe: Add dma-buf support
Date: Thu, 9 Sep 2021 13:45:41 +0800 [thread overview]
Message-ID: <CAD=hENcYPRQXB4NVfpm+_R2qn3czW3oSOS6rS=CEKWwhHEfkZA@mail.gmail.com> (raw)
In-Reply-To: <20210908061611.69823-1-mie@igel.co.jp>
On Wed, Sep 8, 2021 at 2:16 PM Shunsuke Mie <mie@igel.co.jp> wrote:
>
> This patch series add a support for rxe driver.
After applying the patches, please run rdma-core tests with the patched kernel.
Then fix all the problems in rdma-core.
Thanks
Zhu Yanjun
>
> A dma-buf based memory registering has beed introduced to use the memory
> region that lack of associated page structures (e.g. device memory and CMA
> managed memory) [1]. However, to use the dma-buf based memory, each rdma
> device drivers require add some implementation. The rxe driver has not
> support yet.
>
> [1] https://www.spinics.net/lists/linux-rdma/msg98592.html
>
> To enable to use the memories in rxe rdma device, add some changes and
> implementation in this patch series.
>
> This series consists of three patches. The first patch changes the IB core
> to support for rdma drivers that have not real dma device. The second
> patch extracts a memory mapping process of rxe as a common function to use
> a dma-buf support. The third patch adds the dma-buf support to rxe driver.
>
> Related user space RDMA library changes are provided as a separate
> patch.
>
> Shunsuke Mie (3):
> RDMA/umem: Change for rdma devices has not dma device
> RDMA/rxe: Extract a mapping process into a function
> RDMA/rxe: Support dma-buf as memory region
>
> drivers/infiniband/core/umem_dmabuf.c | 2 +-
> drivers/infiniband/sw/rxe/rxe_loc.h | 3 +
> drivers/infiniband/sw/rxe/rxe_mr.c | 186 +++++++++++++++++++++-----
> drivers/infiniband/sw/rxe/rxe_verbs.c | 36 +++++
> 4 files changed, 193 insertions(+), 34 deletions(-)
>
> --
> 2.17.1
>
next prev parent reply other threads:[~2021-09-09 5:45 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-08 6:16 [RFC PATCH 0/3] RDMA/rxe: Add dma-buf support Shunsuke Mie
2021-09-08 6:16 ` [RFC PATCH 1/3] RDMA/umem: Change for rdma devices has not dma device Shunsuke Mie
2021-09-08 6:26 ` Christoph Hellwig
2021-09-08 7:01 ` Shunsuke Mie
2021-09-08 7:19 ` Christoph Hellwig
2021-09-08 8:41 ` Shunsuke Mie
2021-09-08 11:18 ` Jason Gunthorpe
2021-09-08 13:33 ` Christian König
2021-09-08 19:22 ` Daniel Vetter
2021-09-08 23:33 ` Jason Gunthorpe
2021-09-09 9:26 ` Daniel Vetter
2021-09-10 1:46 ` Shunsuke Mie
2021-09-13 19:22 ` Daniel Vetter
2021-09-14 7:11 ` Shunsuke Mie
2021-09-14 9:38 ` Daniel Vetter
2021-09-14 10:13 ` Shunsuke Mie
2021-09-08 6:16 ` [RFC PATCH 2/3] RDMA/rxe: Extract a mapping process into a function Shunsuke Mie
2021-09-08 6:16 ` [RFC PATCH 3/3] RDMA/rxe: Support dma-buf as memory region Shunsuke Mie
2021-09-09 5:45 ` Zhu Yanjun [this message]
2021-09-10 2:00 ` [RFC PATCH 0/3] RDMA/rxe: Add dma-buf support Shunsuke Mie
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