reproduce (this is a W=1 build):
        git checkout ea5514e300568cbe8f19431c3e424d4791db8291
        b4 shazam https://lore.kernel.org/r/20251209180659.208842-13-rrichter@amd.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 drivers/cxl/core/