reproduce (this is a W=1 build):
        # https://github.com/jimc/linux/commit/81f6e1fbd4105eefd6bff844642707c3e3e1db88
        git remote add jimc https://github.com/jimc/linux.git
        git fetch --no-tags jimc dd-classmap-drm-fancy
        git checkout 81f6e1fbd4105eefd6bff844642707c3e3e1db88

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.4.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=xtensa olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.4.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=xtensa SHELL=/bin/bash