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New Stable (Linux) Kernels and Upcoming Features

Submitted by Roy Schestowitz on Sunday 31st of January 2021 12:37:09 AM Filed under
Linux
  • Linux 5.10.12
  • Linux 5.4.94
  • Linux 4.19.172
  • Linux 4.14.218
  • Linux 4.9.254
  • Linux 4.4.254
  • Linux Patches Look To Restrict Modules From Poking Certain Registers, Using Select Instructions - Phoronix

    Last year the Linux kernel began tightening up the ability to write to select CPU MSRs from user-space. That restricting of user-space access to select registers was done in the name of security as well as not wanting user-space to accidentally or maliciously poke some MSRs that could cause problems with kernel behavior. Now in kernel space there are some yet-to-be-merged patches that would place some new restrictions on kernel modules around poking certain registers or using select CPU instructions.

  • AMD FreeSync HDMI Patch Appearing For Their Open-Source Linux Driver - Phoronix

    While the AMD Linux graphics driver for some time has been supporting FreeSync over DisplayPort connections, FreeSync displays connected via HDMI have not been supported. But now we are finally seeing the start of patches at least as far as HDMI pre-v2.1 support is concerned.

    HDMI 2.1 has Variable Refresh Rate (VRR) as part of the standard for reducing lag, stuttering, and frame tearing particularly while gaming. While HDMI 2.1 has the standardized VRR and many other features, HDMI Forum limiting specification access and what can be supported by open-source drivers has for now led to the lack of support there among the open-source Linux graphics drivers. The X.Org Foundation is trying to get the HDMI Forum to change course to allow for better open-source support, but anyhow what we are seeing with patch work that came out on Friday is for AMD's vendor-specific FreeSync with pre-v2.1 HDMI.

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