reproduce (this is a W=1 build):
        # https://github.com/intel-lab-lkp/linux/commit/890c77f260c915d7b8862a3c71961ab2afe4e673
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Xizhe-Tang/drm-i915-dp-Only-send-AS-SDP-when-VRR-CMRR-is-enabled-or-PR-async/20260924-035159
        git checkout 890c77f260c915d7b8862a3c71961ab2afe4e673
        # apt-get install sparse
        # sparse: v0.6.5-rc1

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__ -fmax-errors=unlimited -fmax-warnings=unlimited' O=build_dir ARCH=x86_64 olddefconfig
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__ -fmax-errors=unlimited -fmax-warnings=unlimited' O=build_dir ARCH=x86_64 SHELL=/bin/bash