Compute Accelerator Subsystem Being Introduced For Linux 6.2

Written by Michael Larabel in Linux Kernel on 30 November 2022 at 05:42 AM EST. 2 Comments
It's happening: the new "accel" compute accelerator subsystem is now queued for introduction with the Linux 6.2 kernel once that merge window opens in December.

In recent months there has been a lot of work on this proposed subsystem intended for AI accelerators ever since a consensus was reached among upstream developers to build it off the existing Direct Rendering Manager (DRM) subsystem. As these AI accelerators have a lot in common with GPUs, it makes sense to re-use as much of that existing infrastructure as possible.

Oded Gabbay of Intel / Habana Labs has been getting the subsystem laid out and initial framework in place. The "habanalabs" AI driver currently within char/misc is in turn expected to be adapted to this accelerator subsystem. There are also several other work-in-progress AI-related hardware drivers now expected to be adapted for this subsystem rather than targeting char/misc or DRM itself. Those accel drivers aren't expected to come until post-6.2 while at least this subsystem and framework are being mainlined now to ease the introduction of those hardware drivers.

Overnight the accelerator subsystem code was merged to DRM-Next ahead of the Linux 6.2 merge window opening up in a week and a half. With it now coming in by way of DRM-Next, it will be there for Linux 6.2 barring any last minute complaints by Linus Torvalds.

This is yet another feature making Linux 6.2 all the more exciting and what will be a fun way to kick off 2023.
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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via

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