[kbuild-all] powerpc64le-linux-ld: arch/powerpc/platforms/pseries/lpar.o:undefined reference to `mmu_pid_bits'

Hi Stephen, 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: 64677779e8962c20b580b471790fe42367750599 commit: 18217da36103c25d87870624dfa569e6b9906a90 powerpc/64s/radix: Fix build failure with RADIX_MMU=n date: 9 months ago config: powerpc-randconfig-c004-20200621 (attached as .config) compiler: powerpc64le-linux-gcc (GCC) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): powerpc64le-linux-ld: warning: orphan section `.gnu.hash' from `linker stubs' being placed in section `.gnu.hash' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org