reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # install riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-misc.git/commit/?id=298f529d0c46850b0d6d48f29d085aab13509929
        git remote add sre-misc https://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-misc.git
        git fetch --no-tags sre-misc thinkpad-t14s-x1e
        git checkout 298f529d0c46850b0d6d48f29d085aab13509929
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-16 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-16 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash