Hi Nicholas, It's probably a bug fix that unveils the link errors.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 435faf5c218a47fd6258187f62d9bb1009717896 commit: 993cfecc59e57de237ae27fadc84ed24efa87a4d powerpc/64s/radix: Fix CONFIG_SMP=n build date: 3 months ago config: powerpc-randconfig-r006-20200605 (attached as .config) compiler: powerpc64le-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 993cfecc59e57de237ae27fadc84ed24efa87a4d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> All errors (new ones prefixed by >>, old ones prefixed by <<): >> powerpc64le-linux-ld: mm/page_alloc.o:(.toc+0x0): undefined reference to >> `node_reclaim_distance' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
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