reproduce (this is a W=1 build):
        git remote add opencloudos https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
        git fetch --no-tags opencloudos linux-5.4/lts/5.4.119-20.0009.spr
        git checkout 6c95419e5c4fa83ef61c2c0cbf752d39df4b9f3f
        # 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/kvm/ drivers/gpu/drm/ drivers/input/serio/ drivers/net/ethernet/stmicro/stmmac/ drivers/tty/serial/ drivers/usb/ drivers/vfio/mdev/ drivers/vfio/pci/ drivers/vfio/platform/ sound/soc/