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Linux Kernel 5.19 Officially Released, This Is What’s New

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After being in development for more than two months, Linux kernel 5.19 is finally here and introduces support for ZSTD-compressed firmware files, support for AMD’s Secure Nested Paging feature, a new user-space API for managing MultiPath TCP (MPTCP) flows, initial support for Loongson’s “LoongArch” RISC ISA CPU architecture, as well as support for the ARM Scalable Matrix Extension (SME).

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Beat me to it

  • Linux 5.19
    So here we are, one week late, and 5.19 is tagged and pushed out.
    The full shortlog (just from rc8, obviously not all of 5.19) is below,
    but I can happily report that there is nothing really interesting in
    there. A lot of random small stuff.
    In the diffstat, the loongarch updates stand out, as does another
    batch of the networking sysctl READ_ONCE() annotations to make some of
    the data race checker code happy.
    Other than that it's really just a mixed bag of various odds and ends.
    On a personal note, the most interesting part here is that I did the
    release (and am writing this) on an arm64 laptop. It's something I've
    been waiting for for a _loong_ time, and it's finally reality, thanks
    to the Asahi team. We've had arm64 hardware around running Linux for a
    long time, but none of it has really been usable as a development
    platform until now.
    It's the third time I'm using Apple hardware for Linux development - I
    did it many years ago for powerpc development on a ppc970 machine.
    And then a decade+ ago when the Macbook Air was the only real
    thin-and-lite around. And now as an arm64 platform.
    Not that I've used it for any real work, I literally have only been
    doing test builds and boots and now the actual release tagging. But
    I'm trying to make sure that the next time I travel, I can travel with
    this as a laptop and finally dogfooding the arm64 side too.
    Anyway, regardless of all that, this obviously means that the merge
    window (*) will open tomorrow. But please give this a good test run
    before you get all excited about a new development kernel.

3 more posts

  • Linux Kernel 5.19 Released with Major Network Improvements + More - OMG! Ubuntu!

    A brand new version of the Linux kernel is available to download, to round off July or signal the start of August, depending on your locale.

    Linux 5.19 is a pretty sizeable update all told, and it features a litany of low-level optimisations, several notable improvements to networking support, all-important security fixes, and lots more.

    In announcing the release on the Linux Kernel Mailing List, Linus Torvalds remarks “…the most interesting part here is that I did the release (and am writing this) on an arm64 laptop. It’s something I’ve been waiting for for a _loong_ (sic) time, and it’s finally reality, thanks to the Asahi team.”

    Asahi is the project to get Linux working on laptops using Apple Silicon.

    He also says that the next release of the Linux Kernel is “likely” to be badged as v6.0 rather than 5.20 — we’ll hear more on that approach in the coming weeks.

  • Linus Torvalds Releases Linux 5.19 - From an Apple Silicon MacBook - Slashdot

    "Linus Torvalds just released Linux 5.19 as stable for the newest version of the Linux kernel..." reports Phoronix.

    But they also note that on the Linux kernel mailing list, "Torvalds went on to write about his Arm-based MacBook [running an AArch64 Apple M1 SoC]... now under Linux thanks to the work of the Asahi Linux project."

  • The 5.19 kernel is out []

    He also notes that the next kernel is likely to be 6.0.

    Significant features in 5.19 include Arm Scalable Matrix Extension support, a number of io_uring improvements, BIG TCP support, numerous random-number generator improvements, support for AMD's Secure Nested Paging and Intel's Trusted Domain Extensions mechanisms, support for the Loongson "LoongArch" CPU architecture, a new proactive reclaim mechanism, and more. See the LWN merge-window summaries (part 1, part 2) and the KernelNewbies 5.19 page for more information.

Bootlin: Linux 5.19 released, Bootlin contributions inside

  • Linux 5.19 Release - Main changes, Arm, RISC-V and MIPS architectures - CNX Software

    Those look to be minor changes indeed. This was followed later with an update to build fix for Loongson-3 (fix compile mips cpu_hwmon as module build error).

    The full Linux 5.19 changelog with commit messages only is available, and I generated it with the command git log v5.18..v5.19-rc8 --stat. Alternatively, you could check out a detailed summary on KernelNewbies website.

  • Linux 5.19 released, Bootlin contributions inside - Bootlin's blog

    Linux 5.19 has been released yesterday. We recommend the usual resources of LWN (part 1 and part 2) as well as KernelNewbies to get some high-level overview of the major additions. CNX-Software also has an article focused on the ARM/RISC-V/MIPS improvements.

The replicant

  • Linux Kernel 5.19 Officially Released

    inux Kernel 5.19 Officially Released

    Linux Kernel 5.19 is now officially available. As usual, Linus made an announcement regarding the availability of Linux Kernel 5.19.

Kernel 5.19: Probably the final release of the 5.x series

  • Kernel 5.19: Probably the final release of the 5.x series

    As usual, there are quite a few changes merged into the mainline; among the most interesting are:

    - Arm Scalable Matrix Extension
    - Intel "in-field scan" mechanism for CPU diagnosis
    - initial support for the LoongArch CPU architecture
    - support for running 32-bit binaries on 64-bit RISC-V systems
    - several io_uring subsystem enhancements
    - BIT TCP support for handling huge IPv6/TCP packets
    - Zstd compression support for firmware files
    - AMD's Secure Nested Paging and Intel's Trusted Domain Extensions for enhanced virtualization/containers security

    More details about the merge window are available on part 1.

    Looking at the version history, one may notice the 3.x kernel series ended with version 3.19, while the 4.x series ended at 4.20. As there is no clear naming convention for future kernel versions, it remains to be seen if Linus will decide to end this series with version 5.19 or to extend it to 5.20 or beyond.


  • LINUX 5.19

    Linux 5.19 is released, largely with more hardware support and new architectures (including an unusual super-modern virtual Motorola 68000 platform to emulate Google Goldfish devices — my real Q800, clockchipped running A/UX, is flabbergasted). Here's a full list of changes.

J Wallen and Brodie Robertson

  • Linux kernel 5.19 includes major networking improvements | TechRepublic

    Linus Torvalds is a busy man who continues to toil away at the Linux kernel to bring it new features, better performance and enhanced security. While the latest release of the Linux kernel might not be viewed as the biggest milestone in the history of the open-source operating system, it does have very interesting new additions to help the OS soar to new heights.

    The showstopper bit of trivia about Linux 5.19 is that Torvalds managed the release on an M2-powered Apple laptop. The Linux kernel has come so far that it can work with the latest and greatest hardware — from Apple.

    Let’s dive in and see what the latest Linux kernel has to offer.

  • Linus Torvalds Is Testing Linux On M1/M2 Macs - Invidious

    The Asahi Linux team has been doing incredible work getting Linux running on the M1/M2 Macs and Linus Torvalds has been looking for powerful ARM based systems running linux so he decided to try it out.

Linux Kernel 6.0 is Likely the Next Version Upgrade With Initial

Late one

  • Linux Kernel 5.19 Released With 7 New Features

    A new version of the Linux kernel has arrived. Like most updates, version 5.19 doesn't contain one headline-grabbing feature. Instead, it's filled with various odds-and-ends improvements that make Linux more performant across hardware both new and old.

    Maybe 5.19 will be a release that surprises you. But if you don't want to be surprised, here's some of what to expect.

Some 5.19 development statistics

  • Some 5.19 development statistics []

    The 5.19 kernel was released, after a one-week delay to deal with the fallout from the Retbleed mitigations, on July 31. By that time, 16,399 commits (15,134 non-merge and 1,265 merges) had found their way into the mainline repository, making this development cycle the busiest since 5.13 (16,030 non-merge changesets and 1,157 merges). Tradition dictates that now is the time for a look at where the changes in 5.19 came from, and we've learned not to go against tradition.

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