Intel Prepares More Graphics Driver Code For Linux 6.4

Written by Michael Larabel in Intel on 17 March 2023 at 06:43 AM EDT. Add A Comment
Last week following the Linux 6.3-rc1 release Intel engineers already began sending new Intel i915 driver feature code to DRM-Next for queuing until the Linux 6.4 merge window in early May. This week another batch of "drm-intel-gt-next" material was submitted.

This week's Intel GT changes include a number of fixes, avoiding use of stolen memory or BAR for ring buffers on LLC platforms, continued enablement around Intel Meteor Lake (MTL) graphics, various DG2/Alchemist tweaks, and other routine work. Nothing too incredibly exciting for end-users this week, but there still is a few more weeks for more DRM feature code to be readied for DRM-Next to make it for Linux 6.4.

Intel Meteor Lake slide
Much of Intel's open-source Linux graphics focus recently has been on readying their Meteor Lake graphics support as well as preparing for their new "Xe" kernel driver that has yet to be mainlined.

Intel Linux engineer Joonas Lahtinen summed up this week's drm-intel-gt-next pull as:
"There is an important performance monitoring fix (#6333), more resiliency to pcode load delay and avoiding caching problems on LLC systems for ring buffers. Stolen memory probing fix and a missing register whitelisting for Gen12. Fix for potential OOB access on SSEU max_subslices array.

Improvements to error capture on GuC, corrections to workarounds power domains across Gen11/Gen12 with subject to runtime PM.

Then the regular bunch of smaller tweaks, restructuring and cleanups not to forget documentation, sparse and selftest improvements."

See this pull for the full list of this week's Intel GT patches.
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