Six kernel patches and two utilities later, the VRAM situation for AMD GPUs is better now.

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Developer Natalie Vock has published a fix for AMD GPU VRAM mismanagement on Linux, targeting systems with 8GB VRAM or less. The solution combines six kernel patches with two userspace utilities: dmemcg-booster and a fork of KDE Plasma's Foreground Booster. Together they use the dmem cgroup controller to prioritize foreground apps (like games) when allocating VRAM, preventing background processes from stealing GPU memory. The patches are not yet in mainline Linux, but CachyOS users on Linux 7.0rc7-2+ are already covered, and Arch-based users can install via AUR. A patch for the nouveau NVIDIA driver has also been submitted.

An Open Source Dev Has Put Together a Fix for AMD GPU's VRAM Mismanagement on Linux