reproduce (this is a W=1 build):
        # https://github.com/jimc/linux/commit/a90642ac412013292f8acac1501e4ace018e5238
        git remote add jimc https://github.com/jimc/linux.git
        git fetch --no-tags jimc submit/dyndbg-classmap-foundation
        git checkout a90642ac412013292f8acac1501e4ace018e5238

        # 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 drivers/gpu/drm/hisilicon/hibmc/