Hi Matthew, Thank you for the patch! Yet something to improve: [auto build test ERROR on next-20200429] [also build test ERROR on v5.7-rc3] [cannot apply to xfs-linux/for-next linux-nvdimm/libnvdimm-for-next ext4/dev f2fs/dev-test linus/master shaggy/jfs-next v5.7-rc3 v5.7-rc2 v5.7-rc1] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Matthew-Wilcox/Large-pages-in-th... base: 861978d1331b7e988e0295a2275c669c767fa3f1 config: arm64-allyesconfig (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/nvdimm/pmem.c: In function 'pmem_rw_page': 238 | rc = pmem_do_write(pmem, page, 0, sector, tmp_size(page)); | ^~~~~~~~ | thp_size cc1: some warnings being treated as errors vim +238 drivers/nvdimm/pmem.c 230 231 static int pmem_rw_page(struct block_device *bdev, sector_t sector, 232 struct page *page, unsigned int op) 233 { 234 struct pmem_device *pmem = bdev->bd_queue->queuedata; 235 blk_status_t rc; 236 237 if (op_is_write(op)) 239 else 240 rc = pmem_do_read(pmem, page, 0, sector, thp_size(page)); 241 /* 242 * The ->rw_page interface is subtle and tricky. The core 243 * retries on any error, so we can only invoke page_endio() in 244 * the successful completion case. Otherwise, we'll see crashes 245 * caused by double completion. 246 */ 247 if (rc == 0) 248 page_endio(page, op_is_write(op), 0); 249 250 return blk_status_to_errno(rc); 251 } 252 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org