From: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
To: Chen-Yu Tsai <wenst@chromium.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
Chun-Kuang Hu <chunkuang.hu@kernel.org>,
Philipp Zabel <p.zabel@pengutronix.de>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
Chen-Yu Tsai <wens@kernel.org>,
Jernej Skrabec <jernej@kernel.org>,
Samuel Holland <samuel@sholland.org>,
David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>
Cc: linux-sunxi@lists.linux.dev,
Paul Kocialkowski <paulk@sys-base.io>,
linux-mediatek@lists.infradead.org,
dri-devel@lists.freedesktop.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 1/4] drm/prime: Limit scatter list size with dedicated DMA device
Date: Wed, 11 Mar 2026 15:40:32 +0100 [thread overview]
Message-ID: <6d8d846b-f140-4294-aa2f-8fda230e0e18@collabora.com> (raw)
In-Reply-To: <20260311094929.3393338-2-wenst@chromium.org>
Il 11/03/26 10:49, Chen-Yu Tsai ha scritto:
> If a dedicated DMA device is specified for the DRM device, then the
> scatter list size limit should pertain to the DMA device.
>
> Use the dedicated DMA device, if given, to limit the scatter list size.
> This only applies to drivers that have called drm_dev_set_dma_dev() and
> are using drm_prime_pages_to_sg() either directly or through the SHMEM
> helpers. At the time of this writing, the former case only includes the
> Rockchip DRM driver, while the latter case includes the gud, udl, and
> the tiny appletbdrm and gm12u320 drivers.
>
> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
> Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
next prev parent reply other threads:[~2026-03-11 14:40 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-11 9:49 [PATCH v2 0/4] drm/gem-dma: Support dedicated DMA device for allocation Chen-Yu Tsai
2026-03-11 9:49 ` [PATCH v2 1/4] drm/prime: Limit scatter list size with dedicated DMA device Chen-Yu Tsai
2026-03-11 14:40 ` AngeloGioacchino Del Regno [this message]
2026-03-11 21:08 ` Claude review: " Claude Code Review Bot
2026-03-11 9:49 ` [PATCH v2 2/4] drm/gem-dma: Support dedicated DMA device for allocation and mapping Chen-Yu Tsai
2026-03-11 14:40 ` AngeloGioacchino Del Regno
2026-03-11 21:08 ` Claude review: " Claude Code Review Bot
2026-03-11 9:49 ` [PATCH v2 3/4] drm/mediatek: Set dedicated DMA device and drop custom GEM callbacks Chen-Yu Tsai
2026-03-11 14:40 ` AngeloGioacchino Del Regno
2026-03-11 21:08 ` Claude review: " Claude Code Review Bot
2026-03-11 9:49 ` [PATCH v2 4/4] drm/sun4i: Use backend/mixer as dedicated DMA device Chen-Yu Tsai
2026-03-11 21:08 ` Claude review: " Claude Code Review Bot
2026-03-11 21:08 ` Claude review: drm/gem-dma: Support dedicated DMA device for allocation Claude Code Review Bot
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