tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   3ca706c189db861b2ca2019a0901b94050ca49d8
commit: d8a719059b9dc963aa190598778ac804ff3e6a87 Revert "mm/pgtable: add stubs for {pmd/pub}_{set/clear}_huge"
date:   8 weeks ago
config: powerpc-randconfig-r003-20210915 (attached as .config)
compiler: powerpc-linux-gcc (GCC) 11.2.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d8a719059b9dc963aa190598778ac804ff3e6a87
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout d8a719059b9dc963aa190598778ac804ff3e6a87
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   powerpc-linux-ld: mm/debug_vm_pgtable.o: in function `pmd_huge_tests':
>> debug_vm_pgtable.c:(.init.text+0x198): undefined reference to `pmd_set_huge'
   powerpc-linux-ld: mm/debug_vm_pgtable.o: in function `pud_huge_tests':
>> debug_vm_pgtable.c:(.init.text+0x2a4): undefined reference to `pud_set_huge'

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org