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Kernel: Qualcomm/Freedreno, Intel, and Oracle

Submitted by Roy Schestowitz on Monday 12th of April 2021 07:20:14 PM Filed under
Linux

  • MSM DRM Driver Picks Up Initial Support For The Snapdragon SC7280 - Phoronix

    The MSM DRM driver changes have been sent to DRM-Next for this Freedreno aligned project providing open-source graphics/display driver support for Qualcomm SoCs.

    Most notable to the MSM driver changes slated for Linux 5.13 is the initial support for the SC7280, a forthcoming Snapdragon SoC that has seen rumors and various information in recent weeks. The SC7280 SoC so far has surfaced within reports about future Google Chromebooks. Details on the SC7280 remain light.

  • Intel DG1 Graphics Card Nears Working State On Linux - Phoronix

    While these kernel patches aren't expected to land until the Linux 5.14 kernel cycle later in the summer, a set of 19 patches published on Monday morning begin allowing a test system to boot with the DG1 graphics card.

    Intel's open-source driver engineers continue pushing a lot of Linux patches around DG1 specifically and other underlying driver changes for being able to support discrete graphics processors with their i915 kernel driver.

  • Minimizing struct page overhead

    There is a struct page associated with every base page (4K) of system memory, regardless of use. This rather contentious data structure is 64bytes long. While it looks small, it exists for every base page (4K) of system memory regardless of how process page tables (huge pages) may look. Thus, on x86, its overhead is about 1.5% of total physical memory... or for quick math, it is 16 GB per 1 TB. In systems where the Trusted Computing Base (TCB) is small and memory availability is a concern, 1.5% can quickly translate to tens of GB of wasted memory that could be dedicated to guests.

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