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Kernel: Tablets, Seucurity, PFRUT, and Group Balancer

Submitted by Roy Schestowitz on Tuesday 4th of January 2022 04:28:55 PM Filed under
Linux
  • More Troublesome x86 Android Tablets Being Fixed Up By New Linux Driver - Phoronix

    Last week I called attention to the new "x86-android-tablets" driver being prepared for introduction in Linux 5.17. That driver aims to fix up the mess of various x86 Android-focused tablets failing to run off the mainline Linux kernel or having various device issues in doing so. Since that prior article, more patches have been posted to address additional tablet issues.

    The forthcoming x86-android-tablets driver is focused on the issue of many x86 tablets having invalid entries within their ACPI DSDT tables. Due to these Android tablets relying on custom, device-specific kernel builds there is often hard-coded data within their kernel image rather than jiving properly with ACPI specifications and having valid tables, etc. This driver aims to carry as many of the device-specific quirks/workarounds as possible in order to allow more of these aging tablets to work fine on a mainline Linux kernel build.

  • Linux 5.17 Patch Can Help With Systemd-Less System Security, May Break Some Old Drivers - Phoronix

    A decade old patch is set to be mainlined in the upcoming Linux 5.17 that has been carried by Google's Chrome OS kernel build for years and can help with security on Linux systems not relying upon systemd's udev.

    The change is introducing the new "DEVTMPFS_SAFE" kernel option that will mount DEVTMPFS with the noexec and nosuid mount options by default. The intent of this "safe" devtmpfs is to prevent code execution from happening from /dev or more broadly to prevent some kinds of code execution attacks from happening primarily on embedded systems.

  • Intel is Gearing Up to Give a ‘Superpower’ to Linux that Windows Users Don’t Have

    Last year, several security vulnerabilities were discovered, making it difficult for system administrators to patch the systems without downtime quickly.

    What if some improvements can be made to update some critical components for security/performance improvements without rebooting a system?

    Intel aims to achieve that with its new PFRUT (Platform Firmware Runtime Update and Telemetry) driver.

  • Alibaba Proposes A Group Balancer For The Linux Kernel Scheduler - Phoronix

    With more organizations such as Alibaba configuring their servers to share CPU cores/resources among applications these days rather than exclusively assigning CPU cores to individual applications/tasks, the Chinese company is proposing a new "group balancer" for the Linux kernel scheduler.

    The proposed Linux Group Balancer is focused on reducing resource conflicts when sharing resources among tasks. This balancer is focused on balancing groups of tasks across groups of CPU cores.

»

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