reproduce (this is a W=1 build):
        git checkout ac9914fa72a5a917bb61c5e87bee6b8f9b751f33
        b4 shazam https://lore.kernel.org/r/20251103-vram-carveout-tuning-for-upstream-v1-3-17e2a72639c5@amd.com

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash