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Kernel Work by Intel

Submitted by Roy Schestowitz on Wednesday 11th of August 2021 02:11:48 PM Filed under
Linux
Hardware
  • Intel Graphics Driver Queues More DG2 Code For Linux While Removing Cannon Lake - Phoronix

    Intel has another big batch of open-source kernel graphics driver updates it sent out to DRM-Next for queuing ahead of the upcoming Linux 5.15 cycle. The DG2 graphics card is getting wired up while this pull request does also finally remove the Cannon Lake "Gen 10" graphics that never materialized in commercial products.

    In early July Intel began posting DG2 graphics driver support as well as XeHP SDV support. This second Intel graphics card is getting brought up on Linux now with DG1 getting squared away finally with all the changes around device local memory, transitioning to TTM memory management, GuC handling, making use of the DRM scheduler, and much more that has been ongoing for months while various patch series are still working their way to mainline.

  • Intel Preparing Linux Kernel Support For "Unaccepted Memory" - Phoronix

    The latest patch series from Intel engineers worth noting for the Linux kernel is around implementing support for on-demand "unaccepted memory". Unaccepted memory is supported by the latest-generation AMD EPYC processors but not yet supported under Linux for on-demand/as-needed handling while Intel is preparing the kernel support for their next-gen Xeon CPUs having this capability.

    What's unaccepted memory? With the UEFI v2.9 specification update from earlier this year, it introduces the notion of unaccepted memory / memory acceptance. Principally it's focused on virtual machines and that the memory must first be "accepted" by the guest before it can be allocated and used within the guest's confines. The actual accepting handling process is dependent upon the specific VM hypervisor.

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Submitted by Roy Schestowitz on Wednesday 11th of August 2021 11:00:07 PM.
  • Intel Ironically Removes Cannon Lake Graphics Driver That Wasn't Needed Anyway

    And according to the list of changes to the Linux kernel, Intel is ironically removing support for its Cannon Lake graphics driver in the upcoming Linux kernel version 5.15. These chips were famously shipped without the integrated graphics engine active, meaning the graphics drivers weren't even needed. Interestingly, the chips did have an integrated Gen 10 graphics engine, but Intel disabled the graphics in a sure sign that there were yield problems with its 10nm process that it wasn't being entirely forthcoming about. In fact, Intel also limited these chips to the China region to keep them away from Western audiences. What followed was a long string of further 10nm delays that gave its competitor AMD a massive advantage, and Intel still hasn't fully recovered from the impact.

    Perhaps the biggest news, besides the enablement code for DG2, is the removal of support for Intel Cannon Lake graphics. The i915 GFX driver will no longer support Cannon Lake graphics in the upcoming Linux kernel version 5.15. This means that Intel considers Cannon Lake's graphics driver as a bloated addition to the i915 GFX driver, and hence, it is removing it. The driver didn't matter anyway — the graphics engine never worked.

Intel closes security gaps in laptops, Linux drivers & Co.

Submitted by Roy Schestowitz on Thursday 12th of August 2021 04:00:41 PM.
  • Intel closes security gaps in laptops, Linux drivers & Co.

    Several vulnerabilities in hardware and drivers from Intel could open the door for attackers to nestle on computers. To prevent this, those affected should install the security patches available for download.

    Most dangerous is a security vulnerability (CVE-2021-0084, “high“) in the Linux RMDA driver for the Ethernet controller X722 and 800. Due to a lack of verification of inputs, attackers could obtain higher user rights in an unspecified way. They could also leak information (CVE-2021-0002, “medium“, CVE2021-0003, “low“). The Driver 1.3.19 and 1.4.11 are secured against it.

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