From: Kanchan Joshi <joshi.k@samsung.com>
To: Pavel Begunkov <asml.silence@gmail.com>, linux-block@vger.kernel.org
Cc: io-uring <io-uring@vger.kernel.org>,
"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>,
"Christian König" <christian.koenig@amd.com>,
"Christoph Hellwig" <hch@lst.de>,
"Anuj Gupta" <anuj20.g@samsung.com>,
"Nitesh Shetty" <nj.shetty@samsung.com>,
"lsf-pc@lists.linux-foundation.org"
<lsf-pc@lists.linux-foundation.org>
Subject: Re: [LSF/MM/BPF TOPIC] dmabuf backed read/write
Date: Mon, 9 Feb 2026 15:34:43 +0530 [thread overview]
Message-ID: <0ddc5a14-26c3-4912-96a0-d619ca0fb36c@samsung.com> (raw)
In-Reply-To: <4796d2f7-5300-4884-bd2e-3fcc7fdd7cea@gmail.com>
On 2/3/2026 7:59 PM, Pavel Begunkov wrote:
> Good day everyone,
>
> dma-buf is a powerful abstraction for managing buffers and DMA mappings,
> and there is growing interest in extending it to the read/write path to
> enable device-to-device transfers without bouncing data through system
> memory. I was encouraged to submit it to LSF/MM/BPF as that might be
> useful to mull over details and what capabilities and features people
> may need.
Guilty as charged, I'm interested in the topic. Thanks for posting.
We've had several attempts to move the DMA mapping cost out of the fast
path; hopefully, this will be the final one.
prev parent reply other threads:[~2026-02-09 10:04 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20260204153051epcas5p1c2efd01ef32883680fed2541f9fca6c2@epcas5p1.samsung.com>
2026-02-03 14:29 ` [LSF/MM/BPF TOPIC] dmabuf backed read/write Pavel Begunkov
2026-02-03 18:07 ` Keith Busch
2026-02-04 6:07 ` Anuj Gupta/Anuj Gupta
2026-02-04 11:38 ` Pavel Begunkov
2026-02-04 15:26 ` Nitesh Shetty
2026-02-09 11:15 ` Pavel Begunkov
2026-02-05 3:12 ` Ming Lei
2026-02-05 18:13 ` Pavel Begunkov
2026-02-05 17:41 ` Jason Gunthorpe
2026-02-05 19:06 ` Pavel Begunkov
2026-02-05 23:56 ` Jason Gunthorpe
2026-02-06 15:08 ` Pavel Begunkov
2026-02-06 15:20 ` Jason Gunthorpe
2026-02-06 17:57 ` Pavel Begunkov
2026-02-06 18:37 ` Jason Gunthorpe
2026-02-09 10:59 ` Pavel Begunkov
2026-02-09 13:06 ` Jason Gunthorpe
2026-02-09 13:09 ` Christian König
2026-02-09 13:24 ` Jason Gunthorpe
2026-02-09 13:55 ` Christian König
2026-02-09 14:01 ` Jason Gunthorpe
2026-02-09 9:54 ` Kanchan Joshi
2026-02-09 10:13 ` Christian König
2026-02-09 12:54 ` Jason Gunthorpe
2026-02-09 10:04 ` Kanchan Joshi [this message]
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