reproduce (this is a W=1 build):
        # https://github.com/projectacrn/acrn-kernel/commit/1f44f78a75b6651770fcfbaca9b3e8f3f8b781bc
        git remote add acrn https://github.com/projectacrn/acrn-kernel
        git fetch --no-tags acrn 6.17/linux
        git checkout 1f44f78a75b6651770fcfbaca9b3e8f3f8b781bc

        # 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 arch/x86/kernel/ drivers/media/i2c/max9x/