reproduce (this is a W=1 build):
        # https://github.com/zen-kernel/zen-kernel/commit/cc3f8dd3033c79abd9f37a94efed74a535a703c9
        git remote add zen https://github.com/zen-kernel/zen-kernel
        git fetch --no-tags zen 6.12/invlpgb-v7
        git checkout cc3f8dd3033c79abd9f37a94efed74a535a703c9
        # 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 prepare