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Thursday, March 26th, 2020

    Time Event
    1:09a
    [$] LWN.net Weekly Edition for March 26, 2020
    The LWN.net Weekly Edition for March 26, 2020 is available.
    12:37p
    Security updates for Thursday
    Security updates have been issued by CentOS (firefox, icu, kernel-rt, libvncserver, python-imaging, python-pip, python-virtualenv, thunderbird, tomcat, tomcat6, and zsh), Debian (icu and okular), Fedora (libxslt and php), Gentoo (bluez, chromium, pure-ftpd, samba, tor, weechat, xen, and zsh), Oracle (libvncserver), Red Hat (ipmitool and zsh), and SUSE (python-cffi, python-cryptography and python-cffi, python-cryptography, python-xattr).
    3:02p
    Plasma on TV: Presenting Plasma Bigscreen (KDE.News)
    The KDE.News site is carrying an
    announcement
    for the Plasma
    Bigscreen
    environment, which is meant for
    large-screen televisions. "Talking of interacting from the couch,
    voice control provides users with the ultimate comfort when it comes to TV
    viewing. But most big brands not only do not safeguard the privacy of their
    customers, but actively harvest their conversations even when they are not
    sending instructions to their TV sets. We use Mycroft's Open Source voice
    assistant to solve this problem.
    "
    6:28p
    [$] Avoiding retpolines with static calls
    January 2018 was a sad time in the kernel community. The Meltdown and
    Spectre vulnerabilities had finally been disclosed, and the required
    workarounds hurt kernel performance in a number of ways. One of those
    workarounds — retpolines
    continues to cause pain, with developers going
    out of their way to avoid indirect calls, since they must now be implemented
    with retpolines. In some cases, though, there may be a way to
    avoid retpolines and regain much of the lost performance;
    after a long gestation period, the "static calls" mechanism may finally be
    nearing the point where it can be merged upstream.
    8:56p
    Malcolm: Static analysis in GCC 10
    David Malcolm writes
    about the static-analysis features
    that he is working on adding to the
    GCC compiler. "This issue is, of course, a huge problem to
    tackle. For this release, I’ve focused on the kinds of problems seen in C
    code—and, in particular double-free bugs—but with a view toward creating a
    framework that we can expand on in subsequent releases (when we can add
    more checks and support languages other than C).
    "

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