Hi Nicholas, I love your patch! Yet something to improve: [auto build test ERROR on powerpc/next] [also build test ERROR on arm64/for-next/core linus/master v5.10-rc5] [cannot apply to hnaz-linux-mm/master next-20201127] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Nicholas-Piggin/huge-vmalloc-mappings/20201128-232946 base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next config: microblaze-randconfig-r035-20201128 (attached as .config) compiler: microblaze-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 # https://github.com/0day-ci/linux/commit/95e5da88c21d305af971ed4f00112f0576c2b94f git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Nicholas-Piggin/huge-vmalloc-mappings/20201128-232946 git checkout 95e5da88c21d305af971ed4f00112f0576c2b94f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=microblaze If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): microblaze-linux-ld: mm/page_alloc.o: in function `alloc_large_system_hash': >> (.init.text+0x4144): undefined reference to `find_vm_area' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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