reproduce (this is a W=1 build):
        git remote add opencloudos https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
        git fetch --no-tags opencloudos lts/5.4.119-20.0009
        git checkout b80247552b030b427e8483f5f566b86d3b8d3ec1
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 olddefconfig
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kernel/ block/ drivers/base/ drivers/iommu/ drivers/md/ kernel/ mm/ net/core/