[$] LWN.net Weekly Edition for December 25, 2025

Inside this week’s LWN.net Weekly Edition:

  • Front: 2025 retrospective; Dirk and Linus talk; successful open-source documentation projects; verifier-state pruning in BPF; Linux 32-bit timeline; BPF state visualizer; systemd v259.
  • Briefs: linux-next maintainer; 2025 TAB; Git in Debian; Elementary OS 8.1; Qubes OS 4.3.0; GDB 17.1; Incus 6.20; systemd v259; Quotes; …
  • Announcements: Newsletters, conferences, security updates, patches, and more.

[$] What’s new in systemd v259

The systemd v259
release was announced on December 17, just three months after
v258. It is a more modest release but still includes a number of
important changes such as a new option for the run0 command
(an alternative to sudo), ability to mount user home directories from the host in virtual
machines, as well as under-the-hood changes with dlopen()
for library linking, the ability to compile systemd with musl libc,
and more.

Linux 6.20~7.0 To Bring Prep Changes For CXL Soft Reserve Recovery & Accelerator Memory

The next kernel cycle that will be known as either Linux 6.20 or Linux 7.0 depending upon how Linus Torvalds handles the versioning for this next x.20 milestone. More than likely it will be Linux 7.0 given his historical versioning scheme, but whatever the case, ahead of this next kernel cycle some initialization changes for the CXL subsystem are building up…

How to Install Java 25 on Ubuntu 24.04

Java is one of the most widely used programming languages worldwide. When considering installing Java 25 on Ubuntu 24.04, developers will find an object-oriented, platform-independent language used to build a range of applications, including web and mobile applications, big data solutions, and even software for cars and planes.