reproduce (this is a W=1 build):
        git checkout 86731a2a651e58953fc949573895f2fa6d456841
        b4 shazam https://lore.kernel.org/r/20250623-ddrperfm-upstream-v1-6-7dffff168090@foss.st.com
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash