reproduce (this is a W=1 build):
        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
        # https://github.com/rgushchin/linux/commit/a8f2d92c5560e579201e8043df06af4b22e28e9b
        git remote add rgushchin https://github.com/rgushchin/linux.git
        git fetch --no-tags rgushchin page_counters.2
        git checkout a8f2d92c5560e579201e8043df06af4b22e28e9b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
        ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash mm/