reproduce (this is a W=1 build):
        git checkout afb100a5ea7a13d7e6937dcd3b36b19dc6cc9328
        b4 shazam https://lore.kernel.org/r/20251001-av1_irisdecoder-v1-3-9fb08f3b96a0@oss.qualcomm.com
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.3.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=s390 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-14.3.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash drivers/media/platform/qcom/iris/