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Leftovers: Kernel

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Linux
  • Stop whatever you're doing and pay attention: Linux kernel 4.5rc1 is here

    ANY MINUTE now we should see the first release candidate for Linux kernel 4.5, and there's a lot to look forward to.

    It seems like only a fortnight ago that we talked about the final release of Linux 4.4 (it was) but a lot has happened.

    Most notable is that the kernel is now ready for Kaby Lake, the next generation of Intel processors due later this year. This was expected to start in 4.4 but the method of the Linux release schedule meant it was dropped.

  • No SJWs allowed
  • An anonymous response to dangerous FOSS Codes of Conduct
  • Intel Is Still Maintaining A Proprietary OpenCL Driver For Linux
  • Understanding Intel's GEN Assembly For OpenCL Kernels
  • libinput and semi-mt touchpads

    libinput 1.1.5 has a change in how we deal with semi-mt touchpads, in particular: interpretation of touch points will cease and we will rely on the single touch position and the BTN_TOOL_* flags instead to detect multi-finger interaction. For most of you this will have little effect, even if you have a semi-mt touchpad. As a reminder: semi-mt touchpads are those that can detect the bounding box of two-finger interactions but cannot identify which finger is which. This provides some ambiguity, a pair of touch points at x1/y1 and x2/y2 could be a physical pair of touches at x1/y2 and x2/y1. More importantly, we found issues with semi-mt touchpads that go beyond the ambiguity and reduce the usability of the touchpoints.

  • PV vs PVHVM on next XenServer

    That's not really surprising: new hardware tends to include more and more instructions to assist virtualization. So in fact, the "cost" of virtualization (in terms of performances) is reduced.

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today's leftovers

Linux/FOSS Events

  • The Linux Foundation Announces Session Lineup for ApacheCon(TM) Europe
  • OpenShift Commons Gathering event preview
    We're just two months out from the OpenShift Commons Gathering coming up on November 7, 2016 in Seattle, Washington, co-located with KubeCon and CloudNativeCon. OpenShift Origin is a distribution of Kubernetes optimized for continuous application development and multi-tenant deployment. Origin adds developer and operations-centric tools on top of Kubernetes to enable rapid application development, easy deployment and scaling, and long-term lifecycle maintenance for small and large teams. And we're excited to say, the 1.3 GA release of OpenShift Origin, which includes Kubernetes 1.3, is out the door! Hear more about the release from Lead Architect for OpenShift Origin, Clayton Coleman.

Security News

  • Report: Linux security must be upgraded to protect future tech
    The summit was used to expose a number of flaws in Linux's design that make it increasingly unsuitable to power modern devices. Linux is the operating system that runs most of the modern world. It is behind everything from web servers and supercomputers to mobile phones. Increasingly, it's also being used to run connected Internet of Things (IoT) devices, including products like cars and intelligent robots.
  • security things in Linux v4.6
    Hector Marco-Gisbert removed a long-standing limitation to mmap ASLR on 32-bit x86, where setting an unlimited stack (e.g. “ulimit -s unlimited“) would turn off mmap ASLR (which provided a way to bypass ASLR when executing setuid processes). Given that ASLR entropy can now be controlled directly (see the v4.5 post), and that the cases where this created an actual problem are very rare, means that if a system sees collisions between unlimited stack and mmap ASLR, they can just adjust the 32-bit ASLR entropy instead.

Raspberry Pi PIXEL and More Improvements