Re: [PATCH] udmabuf: vastly increase the size limit per dmabuf

Xaver Hugl <[email protected]> Tue, 4 Aug 2026 14:27:54 +0200
Newsgroups gmane.comp.freedesktop.wayland.devel,gmane.comp.video.dri.devel,gmane.linux.kernel.stable
Message-ID <CAFZQkGztAGqKUuYarQGOcKnoGq-1CAxqXTTjLWZ0SqJZtkpOXQ@mail.gmail.com>
Am Di., 4. Aug. 2026 um 09:04 Uhr schrieb Robert Mader
<robert.mader-ZGY8ohtN/[email protected]>:
> 1. affected distros could backport the patch or set a higher limit via
> kernel command line
Yeah, I'll put it in our packaging recommendations for KWin.

> Arguably having a working fallback path were possible would be good
> style either way - would it be a big effort to do so in kwin?
For multi-gpu copies, it's not too bad, and I already implemented that
part. For software rendering it would be rather annoying, but it's
arguably a very unlikely edge case that would be terribly slow at
these resolutions either way.
So it'll probably be fine.

Thanks,
- Xaver