From: "Alexandre Courbot" <acourbot@nvidia.com>
To: "Matteo Kloiber" <kernel@matt3o12.de>
Cc: <dakr@kernel.org>, <aliceryhl@google.com>, <ojeda@kernel.org>,
<airlied@gmail.com>, <simona@ffwll.ch>,
<abdiel.janulgue@gmail.com>, <daniel.almeida@collabora.com>,
<robin.murphy@arm.com>, <a.hindborg@kernel.org>,
<nova-gpu@lists.linux.dev>, <dri-devel@lists.freedesktop.org>,
<driver-core@lists.linux.dev>, <rust-for-linux@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/2] rust: scatterlist: honor the device's maximum segment size
Date: Tue, 10 Nov 2026 19:35:15 +0900 [thread overview]
Message-ID: <DMRGPTJ9CH1A.2M8LD751KZRIB@nvidia.com> (raw)
In-Reply-To: <20260831233215.287881-3-kernel@matt3o12.de>
On Tue Sep 1, 2026 at 8:32 AM JST, Matteo Kloiber wrote:
> SGTable::new() caps segment length at dma_max_mapping_size() only, which
> limits the DMA mapping path (e.g. swiotlb), not the device itself. The
> per-device limit from dma_set_max_seg_size() is ignored, so contiguous
> page segments can be longer than the declared max segment size,
> potentially causing problems for future drivers that use this
> abstraction.
>
> nova-core declares an unlimited segment size, so this does not change
> its behavior.
Hi Matteo,
Do you have plans to keep working on this and follow up on the feedback
received on this revision?
prev parent reply other threads:[~2026-11-10 10:35 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-31 23:32 [PATCH 0/2] rust: honor the maximum DMA " Matteo Kloiber
2026-08-31 23:32 ` [PATCH 1/2] gpu: nova-core: declare unlimited DMA max " Matteo Kloiber
2026-09-07 2:10 ` Alexandre Courbot
2026-09-13 21:07 ` Matteo Kloiber
2026-08-31 23:32 ` [PATCH 2/2] rust: scatterlist: honor the device's maximum " Matteo Kloiber
2026-09-07 2:43 ` Alexandre Courbot
2026-09-13 21:08 ` Matteo Kloiber
2026-09-14 0:45 ` Alexandre Courbot
2026-09-14 9:58 ` Danilo Krummrich
2026-09-14 10:22 ` Gary Guo
2026-09-14 12:17 ` Robin Murphy
2026-09-14 13:17 ` Gary Guo
2026-09-14 13:57 ` Danilo Krummrich
2026-09-17 9:06 ` Alexandre Courbot
2026-09-27 22:44 ` Matteo Kloiber
2026-09-28 15:05 ` Alexandre Courbot
2026-09-28 17:39 ` Gary Guo
2026-09-28 18:22 ` Danilo Krummrich
2026-10-03 1:51 ` Alexandre Courbot
2026-09-15 4:44 ` Alexandre Courbot
2026-09-15 4:52 ` Alexandre Courbot
2026-11-10 10:35 ` Alexandre Courbot [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=DMRGPTJ9CH1A.2M8LD751KZRIB@nvidia.com \
--to=acourbot@nvidia.com \
--cc=a.hindborg@kernel.org \
--cc=abdiel.janulgue@gmail.com \
--cc=airlied@gmail.com \
--cc=aliceryhl@google.com \
--cc=dakr@kernel.org \
--cc=daniel.almeida@collabora.com \
--cc=dri-devel@lists.freedesktop.org \
--cc=driver-core@lists.linux.dev \
--cc=kernel@matt3o12.de \
--cc=linux-kernel@vger.kernel.org \
--cc=nova-gpu@lists.linux.dev \
--cc=ojeda@kernel.org \
--cc=robin.murphy@arm.com \
--cc=rust-for-linux@vger.kernel.org \
--cc=simona@ffwll.ch \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®