AI Bug Fixes, Crescent Island Power Brake & Nouveau Fixes For Linux 7.3-rc5 DRM

The Direct Rendering Manager (DRM) subsystem fixes for the week are heavier on the side with many fixes to these kernel graphics/display drivers ahead of Sunday's Linux 7.3-rc5 release. DRM co-maintainer David Airlie noted that this week's pull is mostly made up of "AI inspired fixes for error handling paths, leaks and use after frees" but some more notable fixes do stand out. For the Intel Xe driver with its ability to report reasons why the graphics card is throttling for the likes of memory or VR thermals, SoC average temperature, etc, there is now power brake as a new throttle reason with the upcoming Crescent Island AI accelerators. Crescent Island has a power break "PWRBRK" hardware bit as a new throttle reason that can be relayed by the Xe driver. The Nouveau open-source NVIDIA driver has seen the most fixes with this week's DRM material for Linux 7.3. After Nouveau transitioned from using the NVIDIA R535 driver firmware binaries to the NVIDIA R570 firmware binaries, suspend/resume ended up regressing and other problems. This week's pull for Linux 7.3 has fixed suspend/resume when using the newer NVIDIA firmware, fixed vRAM pinning, and fixed various other driver issues -- some of which were discovered via AI/LLMs. The full list of the DRM fixes now merged for Linux 7.3 can be found via this pull request.