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From: Shunsuke Mie <mie@igel.co.jp>
To: Zhu Yanjun <zyjzyj2000@gmail.com>
Cc: "Shunsuke Mie" <mie@igel.co.jp>,
	"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>,
	linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org,
	dhobsong@igel.co.jp, taki@igel.co.jp, etom@igel.co.jp
Subject: [RFC PATCH 1/3] RDMA/umem: Change for rdma devices has not dma device
Date: Wed,  8 Sep 2021 15:16:09 +0900	[thread overview]
Message-ID: <20210908061611.69823-2-mie@igel.co.jp> (raw)
In-Reply-To: <20210908061611.69823-1-mie@igel.co.jp>

To share memory space using dma-buf, a API of the dma-buf requires dma
device, but devices such as rxe do not have a dma device. For those case,
change to specify a device of struct ib instead of the dma device.

Signed-off-by: Shunsuke Mie <mie@igel.co.jp>
---
 drivers/infiniband/core/umem_dmabuf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/core/umem_dmabuf.c b/drivers/infiniband/core/umem_dmabuf.c
index c6e875619fac..58d6ac9cb51a 100644
--- a/drivers/infiniband/core/umem_dmabuf.c
+++ b/drivers/infiniband/core/umem_dmabuf.c
@@ -146,7 +146,7 @@ struct ib_umem_dmabuf *ib_umem_dmabuf_get(struct ib_device *device,
 
 	umem_dmabuf->attach = dma_buf_dynamic_attach(
 					dmabuf,
-					device->dma_device,
+					device->dma_device ? device->dma_device : &device->dev,
 					ops,
 					umem_dmabuf);
 	if (IS_ERR(umem_dmabuf->attach)) {
-- 
2.17.1


  reply	other threads:[~2021-09-08  6:16 UTC|newest]

Thread overview: 23+ 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 ` Shunsuke Mie [this message]
2021-09-08  6:26   ` [RFC PATCH 1/3] RDMA/umem: Change for rdma devices has not dma device 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
2021-09-08  9:29   ` kernel test robot
2021-09-09  3:23   ` kernel test robot
2021-09-09  3:23     ` kernel test robot
2021-09-09  5:45 ` [RFC PATCH 0/3] RDMA/rxe: Add dma-buf support Zhu Yanjun
2021-09-10  2:00   ` Shunsuke Mie

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