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[$] Using steal time to moderate CPU demands

[Kernel] Posted Aug 27, 2026 14:11 UTC (Thu) by corbet

Virtualization can increase CPU utilization by allowing a large number of virtual CPUs to share a smaller number of physical CPUs. The amount of CPU time that is actually available does not change, though, so heavy activity on too many virtual CPUs can lead to contention and significant performance loss. The steal governor patch series from Shrikanth Hegde is an attempt to address that problem with a mechanism that allows virtual machines to voluntarily reduce the number of virtual CPUs they use when contention is high.

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[$] LWN.net Weekly Edition for August 27, 2026

Posted Aug 27, 2026 0:54 UTC (Thu)

The LWN.net Weekly Edition for August 27, 2026 is available.

Inside this week's LWN.net Weekly Edition

  • Front: AGPL violations; OpenMDW license; quantum computing and encryption; 7.3 merge window; Remind; Quickshell.
  • Briefs: arrayref; RIP Steve French; Armbian 26.8; Vanilla OS 3; Emacs 31.1; KDE Gear 26.08; LibreOffice 26.8; RPM 6.1.0; Quotes; ...
  • Announcements: Newsletters, conferences, security updates, patches, and more.

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[$] An ongoing 3D-printer AGPL violation

[Front] Posted Aug 26, 2026 15:29 UTC (Wed) by jake

At FOSSY 2026, several people from the Software Freedom Conservancy (SFC), which organizes the conference, gave a presentation about an ongoing violation of the Affero General Public License version 3 (AGPLv3). Bradley Kühn, Karen Sandler, and Denver Gingerich spoke about different aspects of the violation, which is in regard to 3D-printer software from Bambu Lab, and what is being done to try to provide users with alternatives. One aspect that is particularly interesting is that the circumvention that the company is employing is precisely what the AGPL was written to prevent.

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[$] Old-school calendaring at the command line with Remind

[Development] Posted Aug 25, 2026 14:03 UTC (Tue) by jzb

Remind is a command-line calendar and alarm program, with an optional Tk-based graphical interface, for Linux and Unix-like operating systems. It has its own scripting language that allows users to create reminders that are difficult (if not impossible) to specify in other calendaring programs. It is wholly unsuitable for use in corporate environments that require calendar sharing and exchanging meeting invitations; however, it may be precisely the calendaring tool for users who prefer the command line and fast, flexible tools that can help keep track of messy schedules.

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[$] How to be safe from quantum computing

[Security] Posted Aug 24, 2026 14:57 UTC (Mon) by daroc

Practical quantum computers have been ten years away for the last several decades. Now, however, it's beginning to look as though they will be possible in just a few years. Recent research with obfuscated results demonstrated much lower memory requirements to factor ECDSA keys on a quantum computer, with work by other researchers in the open more than halving memory use compared to the state of the art in 2023. At the same time, computer manufacturers are boasting quantum processors that retain viable superpositions over longer periods. Given how slowly software updates filter out to stable systems, it's worth looking at what configuration changes and protocol updates are needed to be safe from quantum computers now.

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[$] Considering the OpenMDW license

[Front] Posted Aug 21, 2026 13:42 UTC (Fri) by corbet

The open-source world has been struggling for a few years now to understand how to approach large language models (LLMs) and the licensing applied to them. What constitutes "freedom" with respect to a black box filled with numerical weights? The process taken by the Open Source Initiative (OSI) in the development of its Open Source AI Definition was controversial at best, as was its output. Now, the Linux Foundation's Mike Dolan has brought a new license to the OSI for approval. It is called the OpenMDW ("Open Model, Data, and Weights"), and it aims to clarify licensing for the distribution of LLMs and related materials, but consensus is proving hard to find for this license as well.

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[$] A look at the Quickshell desktop-component toolkit

[Development] Posted Aug 20, 2026 19:39 UTC (Thu) by tjl

Quickshell is a toolkit for building desktop components, such as toolbars or menus. It uses QML, which is a declarative language for designing GUI applications. Quickshell helps developers create graphical tools for common desktop use cases with a focus on ease of development. It offers a convenient method for writing user interfaces and has been adopted by a number of projects, such as caelestia-shell and DankMaterialShell, that provide desktop environments for minimal window managers like Sway and niri.

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[$] The beginning of the 7.3 merge window

[Kernel] Posted Aug 20, 2026 13:11 UTC (Thu) by corbet

As of this writing, 2,346 non-merge changesets have been pulled into the mainline repository for the 7.3 kernel release. That, clearly, is a mere down payment on the flood that is to come. Even so, those early pulls brought in some noteworthy changes, including (but not limited to) a significant reworking of how group scheduling works on multiprocessor systems.

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LWN.net Weekly Edition for August 20, 2026

Posted Aug 20, 2026 0:05 UTC (Thu)

The LWN.net Weekly Edition for August 20, 2026 is available.

Inside this week's LWN.net Weekly Edition

  • Front: Debian AI GR; Python pathlib; bootstrappable builds; Fedora and AF_ALG; Arm 128-bit PTEs; BPF CI; 7.2 statistics.
  • Briefs: Brief news items from throughout the community.
  • Announcements: Newsletters, conferences, security updates, patches, and more.

Read the full article

Debian weighs eight options in vote on LLM usage

[Distributions] Posted Aug 19, 2026 17:36 UTC (Wed) by jzb

The Debian Project is voting on the usage of large language models (LLMs) to make contributions to the project. The first proposal, sent in late July by Matthias Geiger, would expressly forbid any contributions to Debian that are created by or with the assistance of LLMs. That kicked off a firestorm of discussion and a flood of alternate proposals. Debian developers are now voting on eight proposals in total that range from banning LLM-assisted contributions to explicitly approving them, as well as the standard "none of the above" option that would leave Debian with no agreed policy.

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Eight stable kernels for Thursday

Security updates for Thursday

[Security] Posted Aug 27, 2026 13:00 UTC (Thu) by jzb

Security updates have been issued by AlmaLinux (assertj-core, attr, firefox, go-toolset:rhel8, golang, grafana, gstreamer1-plugins-good, httpd, kernel, mingw-openssl, mod_http2, nginx, nginx:1.24, pam, polkit, and sqlite), Debian (bubblewrap, cockpit, emacs, gimp, libdbi-perl, openjdk-11, openjdk-17, wireshark, and xrdp), Fedora (bluez, curl, emacs, golang, knot, libopenmpt, libsoup3, openbao, openssh, rsync, rust-anstyle-hyperlink, rust-anstyle-progress, rust-cargo, rust-cargo-c, rust-cargo-credential-libsecret, rust-cargo-util, rust-cargo-util-schemas, rust-cargo-util-terminal, rust-crates-io, and rust-rustfix), Gentoo (Chromium, Google Chrome, Microsoft Edge, Opera, Chromium, Google Chrome, Microsoft Edge, Opera, Vivaldi, Chromium, Google Chrome, Microsoft Edge. Opera, and OpenRGB), Oracle (abrt, assertj-core, attr, gstreamer1-plugins-base, gstreamer1-plugins-good, httpd, nginx:1.24, nginx:1.26, nodejs24, and polkit), SUSE (apache2-mod_auth_openidc, buildah, curl, docker, dracut, evince, go1.25-openssl, go1.26-openssl, go1.27, gstreamer-plugins-bad, kernel, kubernetes, kubernetes-old, libarchive, LibVNCServer, libwireshark19, pcp, python310-pip, qemu, rootlesskit, rsync, snpguest, and util-linux), and Ubuntu (bind9, libheif, and openssl, openssl1.0).

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Armbian 26.8 released

[Distributions] Posted Aug 26, 2026 13:54 UTC (Wed) by jzb

Version 26.8 of the Armbian distribution for Arm hardware has been released.

Most releases are a long list of small improvements. This one had three larger pieces landing at roughly the same time, and all three touch parts of Armbian that people use directly rather than parts they only read about in changelogs.

The installer was rewritten. Armbian Imager reached 2.0. And our CI moved out of the repository it had outgrown into one built for the job. None of these were planned to coincide; they simply reached the point where postponing them again would have cost more than doing them.

The installer rewrite is the one I expect people to notice first. It now ships as an armbian-config module, which means it is unit-tested, the same way the rest of armbian-config is tested, rather than living as a script that everyone was slightly afraid to touch. It can target SPI and MTD, treats eMMC and NVMe as separate flows instead of pretending they are the same thing, can flash a bootloader on its own, and — this one is overdue — reports when a bootloader write fails instead of printing "Done." and leaving you to find out at the next boot.

See the release notes for a full list of changes.

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Security updates for Wednesday

[Security] Posted Aug 26, 2026 13:16 UTC (Wed) by jzb

Security updates have been issued by AlmaLinux (firefox, gstreamer1-plugins-base, kernel, kernel-rt, and sqlite), Debian (freecad, kernel, libvncserver, and openssl), Fedora (apr-util, chromium, nnn, perl-DBI, python-tablib, python3.10, python3.11, python3.12, and sympa), Gentoo (DTrace, GNU screen, UnrealIRCd, and Vinyl Cache), Oracle (389-ds-base, attr, firefox, gegl04, grafana, gstreamer1-plugins-base, gstreamer1-plugins-good, httpd, mod_http2, nginx, pam, python-pyasn1, python-urwid, python3.12, python3.14, sqlite, and xorg-x11-server), SUSE (amazon-ecs-init, containerd, curl, distribution, dracut, ffmpeg-7, fuse-overlayfs, gd, git-lfs, go1.25-openssl, go1.26-openssl, govulncheck-vulndb, hauler, himmelblau, kernel, librest, libssh2_org, open-iscsi, openssh, patch, perl-Date-Manip, podman, postgresql14, postgresql16, python-cryptography, python-Pillow, python311, rmt-server, rootlesskit, rpm, rsync, runc, snpguest, sssd, suseconnect-ng, unbound, and util-linux), and Ubuntu (curl, ffmpeg, linux-aws-6.8, linux-azure-fde, linux-azure-fde-6.8, linux-azure-fips, linux-nvidia-tegra, linux-azure, linux-azure-fde, linux-azure, linux-azure-fde, linux-nvidia-tegra-igx, linux-azure-5.4, linux-azure-fips, linux-oracle, linux-raspi, linux-raspi-realtime, openjdk-17, openjdk-21, openjdk-25, openjdk-8, openjdk-lts, openssl, perl, and vim).

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LibreOffice 26.8 released

[Development] Posted Aug 26, 2026 12:50 UTC (Wed) by jzb

Version 26.8 of the LibreOffice suite has been released.

LibreOffice 26.8 concentrates on three areas: the typographic quality of what the suite produces, the range of writing systems it handles correctly, and the fidelity with which documents survive exchange with other office suites.

The largest single body of work in this release addresses bidirectional and complex text. Writer now detects paragraph direction automatically when documents or plain text are opened or pasted. Line wrapping places end-of-line spaces according to the direction of the paragraph rather than that of the adjacent characters. Object resize handles behave correctly in right-to-left and vertical CJK documents. Bidirectional control characters are now visible alongside other formatting marks. In Calc, typing right-to-left text into an empty cell sets the direction of that cell automatically.

See the release notes for a full list of changes.

Comments (3 posted)

mklinux-v7.0-mk2 released

[Kernel] Posted Aug 25, 2026 20:34 UTC (Tue) by corbet

For people who would like to experiment with the multi-kernel Linux concept, Cong Wang has announced the release of mklinux v7.0-mk2.

mklinux lets one machine run several independent Linux kernels at the same time on bare metal, without a hypervisor. A host kernel owns a pool of CPUs, memory and PCI devices, carves that pool into instances, and boots a spawn kernel into each instance through kexec_file_load(). Every spawn kernel runs natively on its own CPUs, its own physical memory and its own devices. Nothing is emulated and nothing is trapped; the only thing shared is what you choose to share.

Note that this is not the old MkLinux, which was a port to PowerPC Macintosh systems.

Comments (2 posted)

Vanilla OS 3 released

Security updates for Tuesday

[Security] Posted Aug 25, 2026 13:12 UTC (Tue) by jzb

Security updates have been issued by AlmaLinux (cups-filters, gstreamer1-plugins-base, gstreamer1-plugins-good, kernel, mrtg, NetworkManager, nginx, nginx:1.24, nodejs24, perl-Date-Manip, python-pyasn1, python-urwid, python3.12, python3.14, and qemu-kvm), Debian (erlang, thunderbird, webkit2gtk, and zfs-linux), Fedora (calibre, chromium, freeipa, java-21-openjdk, java-21-openjdk-portable, java-25-openjdk, java-latest-openjdk, jfrog-cli, kernel, libxls, nextcloud, perl-URI, and samba), Gentoo (Incus), Mageia (kernel and kernel-linus), Oracle (ansible-core, cups-filters, curl, firefox, kernel, libcupsfilters, libreoffice, mrtg, NetworkManager, perl-Date-Manip, php:8.2, php:8.3, python-urwid, python3.14, qemu-kvm, and sqlite), Red Hat (assertj-core, httpd, and osbuild-composer), SUSE (buildah, comfyui, dracut, erlang, erlang27, grafana, kernel, libssh2_org, openvswitch, perl-Dancer2-Plugin-Auth-Extensible, postgresql17, python-cryptography, python-sqlparse, python311, python313-hpack, rpm, suseconnect-ng, thunderbird, and vim), and Ubuntu (async-http-client, curl, and ffmpeg).

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Emacs 31.1 released

[Development] Posted Aug 24, 2026 13:36 UTC (Mon) by jzb

Version 31.1 of the Emacs editor has been released. There is a long list of changes including the removal of the Emacs dumper, a new user Lisp directory feature, a "Send to..." menu item in context-menu-mode , and many other changes; see the NEWS file for more information. Mickey Petersen, author of Mastering Emacs, also has a rundown of some of the quality-of-life features appearing in this release.

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Security updates for Monday

[Security] Posted Aug 24, 2026 13:02 UTC (Mon) by jzb

Security updates have been issued by AlmaLinux (ansible-core, cups-filters, curl, java-1.8.0-openjdk, java-17-openjdk, java-21-openjdk, java-25-openjdk, kbd, kernel, perl-Date-Manip, php:8.2, and php:8.3), Debian (designate, firefox-esr, gst-plugins-bad1.0, libnet-dns-perl, nvidia-graphics-drivers, openjdk-21, openjdk-25, spip, and thunderbird), Fedora (AusweisApp2, bluez, calibre, ceph, chromium, GitPython, kernel, pack, perl-URI, rsync, and tcpreplay), Gentoo (GNU Emacs and needrestart), Oracle (ansible-core, java-1.8.0-openjdk, java-17-openjdk, java-21-openjdk, java-25-openjdk, kbd, kernel, mysql:8.4, perl-Date-Manip, perl:5.32, and sssd), Red Hat (curl, dnsmasq, kbd, kernel, libcap, libreswan, openssh, rsync, samba, unbound, and vim), SUSE (389-ds, apptainer, avahi, bugwarden, chromium, ffmpeg-9-libavcodec-devel, firefox, firefox-esr, gimp, go1.27, helm, ignition, libarchive, libjxl-devel, libssh, multipath-tools, openssl-3, pcp, perl-Net-CIDR-Set, perl-Net-OAuth, postgresql14, postgresql15, python-msgpack, python-pyasn1, python-urllib3, python313, python313-pytest-html, redis, runc, sccache, sssd, util-linux, vim, weechat, and wget), and Ubuntu (linux-fips, linux-gcp-5.15, linux-hwe-7.0, linux-ibm, linux-kvm, linux-lowlatency, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, and linux-nvidia-6.17).

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