Hírolvasó

[$] Better hugetlb page-table walking

5 hónap 2 hét óta
The kernel must often step through the page tables of one or more processes to carry out various operations. This "page-table walking" tends to be performed by ad-hoc (duplicated) code all over the kernel. Oscar Salvador used a memory-management-track session at the 2025 Linux Storage, Filesystem, Memory-Management, and BPF Summit to talk about strategies to unify the kernel's page-table walking code just a little bit by making hugetlb pages look more like ordinary pages.
corbet

Rust 1.86.0 released

5 hónap 2 hét óta
Version 1.86.0 of the Rust language has been released. Changes include support for trait upcasting, the ability to index multiple elements of HashMaps and slices mutably, and a number of stabilized APIs.
corbet

Security updates for Thursday

5 hónap 2 hét óta
Security updates have been issued by AlmaLinux (expat), Debian (chromium, commons-vfs, firefox-esr, php-horde-editor, php-horde-imp, and thunderbird), Fedora (corosync, firefox, nextcloud, and suricata), Mageia (curl and upx), Oracle (emacs, fence-agents, freetype, kernel, libreoffice, libxml2, nginx:1.24, podman, python-jinja2, and tigervnc), Red Hat (firefox and python-jinja2), SUSE (assimp, ffmpeg-4, firefox, ghostscript, GraphicsMagick, libxslt, and tomcat), and Ubuntu (linux, linux-aws, linux-aws-5.15, linux-gcp, linux-gke, linux-gkeop, linux-ibm, linux-intel-iotg, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-meta-raspi, linux-nvidia-tegra, linux-oracle, linux-oracle-5.15, linux-raspi, linux, linux-azure, linux-azure-5.4, linux-bluefield, linux-gcp, linux-ibm, linux-kvm, linux-oracle, linux-oracle-5.4, linux-xilinx-zynqmp, linux-fips, linux-fips, linux-aws-fips, linux-gcp-fips, linux-hwe-5.15, and linux-realtime, linux-intel-iot-realtime).
jake

[$] LWN.net Weekly Edition for April 3, 2025

5 hónap 2 hét óta
Inside this week's LWN.net Weekly Edition:

  • Front: Calibre 8.0; Fedora reproducibility; OpenWrt One; 6.15 Merge Window; LSFMM+BPF coverage including BPF in GCC, Rust merging process, and more.
  • Briefs: Ubuntu namespaces; New FPL; PorteuX 2.0; Firefox 137.0; GCC Rust; Rockbox 4.0; Rust specification; Thundermail; Dave Täht RIP; Quotes; ...
  • Announcements: Newsletters, conferences, security updates, patches, and more.
jake

[$] Catching up with calibre

5 hónap 2 hét óta

Saying that calibre is ebook-management software undersells the application by a fair margin. Calibre is an open-source Swiss Army knife for ebooks that can be used for everything from creating ebooks, converting ebooks from obscure formats to modern formats like EPUB, to serving up an ebook library over the web. The most recent major release, calibre 8.0, brings a better text-to-speech engine, a tool for creating audio overlays when authoring ebooks, support for profiles in the ebook viewer, and more.

jzb

[$] An update on GCC BPF support

5 hónap 2 hét óta

José Marchesi and David Faust kicked off the BPF track at the 2025 Linux Storage, Filesystem, Memory-Management, and BPF Summit with an extra-long session on what they have been doing to support compiling to BPF in GCC. Overall, the project is slowly working toward full support for BPF, with most of the self-tests now passing using Faust's in-progress patches. However, the progress toward that goal has turned up a number of problems with how Clang supports BPF that needed to be discussed at length to find a path forward for both projects.

daroc

Thunderbird plans "Thundermail" email and other services

5 hónap 2 hét óta

Ryan Sipes has announced efforts to expand Thunderbird's offerings with web services to "enhance the experience of using Thunderbird".

The Why for offering these services is simple. Thunderbird loses users each day to rich ecosystems that are both clients and services, such as Gmail and Office365. These ecosystems have both hard vendor lock-ins (through interoperability issues with 3rd-pary clients) and soft lock-ins (through convenience and integration between their clients and services). It is our goal to eventually have a similar offering so that a 100% open source, freedom-respecting alternative ecosystem is available for those who want it.

The planned services include hosted email, appointment scheduling, a revival of Firefox Send, and (of course) an AI assistant based on a partnership with Flower AI. The AI features will "always be optional for use by people who want them". Sipes is managing director of product for Thunderbird's parent organization, MZLA Technologies Corporation. LWN covered his GUADEC 2024 keynote last July.

jzb

Introducing Fedora Project Leader Jef Spaleta

5 hónap 2 hét óta

Outgoing Fedora Project Leader (FPL) Matthew Miller has announced his successor, Jef Spaleta.

Some of you may remember Jef's passionate voice in the early Fedora community. He got involved all the way back in the days of fedora.us, before Red Hat got involved. Jef served on the Fedora Board from July 2007 through the end of 2008. This was the critical time after Fedora Extras and Fedora Core merged into one Fedora Linux where, with the launch of the "Features" process, Fedora became a truly community-led project.

Spaleta will be joining Red Hat full time in May and Miller will be formally handing off FPL duties at the Flock conference in June.

jzb

PorteuX 2.0 released

5 hónap 2 hét óta

Version 2.0 of PorteuX, a distribution based on Slackware Linux, has been released. This release adds the ability to test experimental Wayland sessions for the Cinnamon, LXQt, and Xfce desktops. PorteuX 2.0 updates the Linux kernel to 6.14 and includes many package updates and bug fixes. Users have the choice of PorteuX stable or its rolling release called current. See the install.txt for instructions on installing PorteuX to disk.

jzb

[$] Approaches to reducing TLB pressure

5 hónap 2 hét óta
The CPU's translation lookaside buffer (TLB) caches the results of virtual-address translations, significantly speeding memory accesses. TLB misses are expensive, so a lot of thought goes into using the TLB as efficiently as possible. Reducing pressure on the TLB was the topic of Rik van Riel's memory-management-track session at the 2025 Linux Storage, Filesystem, Memory-Management, and BPF Summit. Some approaches were considered, but the session was short on firm conclusions.
corbet

Rockbox 4.0 released

5 hónap 2 hét óta
For those of you who still have dedicated audio players: version 4.0 of Rockbox, a replacement firmware for many players, has been released. This release brings support for a number of new devices, updated codecs, a number of user-interface improvements, some new games, and more. (LWN last reviewed Rockbox in 2010 — and looked at the ill-fated Android port that year as well).
corbet