reproduce (this is a W=1 build):
        # https://github.com/intel/linux-intel-lts/commit/98f388dc83f17d579f5684c021040f02269a7ebe
        git remote add intel-lts https://github.com/intel/linux-intel-lts.git
        git fetch --no-tags intel-lts 6.6/preempt-rt
        git checkout 98f388dc83f17d579f5684c021040f02269a7ebe
        # save the config file
        make W=1 ARCH=i386 olddefconfig
        make W=1 ARCH=i386