[neon/neon/hardware-integration/Neon/stable] udev/rules.d: add udmabuf uaccess rule

[Carlos De Maine]

Git commit dcc5c63f4da2bd8e2c9312970977347f1f63b12e by Carlos De Maine.
Committed on 17/09/2026 at 07:07.
Pushed by carlosdem into branch 'Neon/stable'.

add udmabuf uaccess rule

KWin needs acces to udmabuf for better performance of software-rendered apps


(cherry picked from commit f7bab19140d6311560c8983b04ed5fe014900399)

Co-authored-by: Kai Uwe Broulik <kde at privat.broulik.de>

A  +3    -0    udev/rules.d/70-neon-udmabuf.rules

https://invent.kde.org/neon/neon/hardware-integration/-/commit/dcc5c63f4da2bd8e2c9312970977347f1f63b12e

diff --git a/udev/rules.d/70-neon-udmabuf.rules b/udev/rules.d/70-neon-udmabuf.rules
new file mode 100644
index 0000000..ad6aa8c
--- /dev/null
+++ b/udev/rules.d/70-neon-udmabuf.rules
@@ -0,0 +1,3 @@
+# Backported from https://github.com/systemd/systemd/commit/fd820e76e4999b4eee13be87fee25f5ffe357a57
+# KWin needs access to udmabuf, see https://planet.kde.org/xavers-blog-2026-05-06-making-wl_shm-fast/
+KERNEL=="udmabuf", TAG+="uaccess"