Well known AMD OpenGL Mesa developer Marek Olšák landed a set of nine patches into Mesa 24.3-devel for GPU hang fixes (mostly for GFX12) . GFX12 as a reminder is the graphics IP to find with upcoming RDNA4 GPUs.
Among these fixes are adding preparations for Compute Wave Save Restore (CWSR) support for GFX11/RDNA3, optimally programming the "OREO_MODE" on both RDNA3 and RDNA4, fixes to the register programming to address GPU hangs, and other fixes.
Well, a different kind of OREO...
I couldn't find much information on the OREO_MODE that is now being programmed optimally. Previously the AMD driver stopped programming the OREO_MODE last year to avoid rare corruption issues. In turn by now optimally programming the OREO_MODE, it fixes a rare performance regression.
These fixes at the moment are in the Mesa 24.3-devel Git branch but should be back-ported to the Mesa 24.1/24.2 stable code given they amount to fixes for addressing all important hang issues. It's good to see the RDNA4/GFX12 open-source driver support getting fit and hopefully all stabilized before its product debut in the coming months.