reproduce (this is a W=1 build):
        # https://github.com/weiny2/linux-kernel/commit/3394ce85e912b328886077c5a439c65284767bb8
        git remote add weiny2 https://github.com/weiny2/linux-kernel.git
        git fetch --no-tags weiny2 cxl-cper-2023-12-13
        git checkout 3394ce85e912b328886077c5a439c65284767bb8
        # 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