reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/joel.granados/linux.git/commit/?id=fd98457173e626d2501830b48b9bfe973fe663b4
        git remote add joel-granados https://git.kernel.org/pub/scm/linux/kernel/git/joel.granados/linux.git
        git fetch --no-tags joel-granados jag/sysctl_jiffies
        git checkout fd98457173e626d2501830b48b9bfe973fe663b4
        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=$HOME/0day COMPILER=gcc-14.3.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=s390 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.3.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=s390 prepare