reproduce (this is a W=1 build):
        git checkout eb68ba4af6da720caaf752b5618220efd5cf31dc
        b4 shazam https://lore.kernel.org/r/e6aa4f46c471bb0178ba9b8bdf285a38f2684d56.1747739323.git.zhoubinbin@loongson.cn
        # 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 drivers/mmc/host/