Hi "Christian, I love your patch! Yet something to improve: [auto build test ERROR on drm-tip/drm-tip] [cannot apply to drm-intel/for-linux-next drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next linus/master drm/drm-next v5.10 next-20201215] [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/Christian-K-nig/drm-ttm-rework-ttm_tt-page-limit-v2/20201216-221614 base: git://anongit.freedesktop.org/drm/drm-tip drm-tip config: i386-randconfig-c001-20201216 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/b613e371433208f88816be875b9d46b6d24cf830 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Christian-K-nig/drm-ttm-rework-ttm_tt-page-limit-v2/20201216-221614 git checkout b613e371433208f88816be875b9d46b6d24cf830 # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): ld: drivers/gpu/drm/ttm/ttm_bo.o: in function `ttm_bo_global_init': >> drivers/gpu/drm/ttm/ttm_bo.c:1242: undefined reference to `__udivdi3' vim +1242 drivers/gpu/drm/ttm/ttm_bo.c 1223 1224 static int ttm_bo_global_init(void) 1225 { 1226 struct ttm_bo_global *glob = &ttm_bo_glob; 1227 uint64_t num_pages; 1228 struct sysinfo si; 1229 int ret = 0; 1230 unsigned i; 1231 1232 mutex_lock(&ttm_global_mutex); 1233 if (++ttm_bo_glob_use_count > 1) 1234 goto out; 1235 1236 si_meminfo(&si); 1237 1238 /* Limit the number of pages in the pool to about 50% of the total 1239 * system memory. 1240 */ 1241 num_pages = (u64)si.totalram * si.mem_unit; > 1242 num_pages = (num_pages * 50 / 100) >> PAGE_SHIFT; 1243 1244 ttm_pool_mgr_init(num_pages); 1245 ttm_tt_mgr_init(); 1246 1247 spin_lock_init(&glob->lru_lock); 1248 glob->dummy_read_page = alloc_page(__GFP_ZERO | GFP_DMA32); 1249 1250 if (unlikely(glob->dummy_read_page == NULL)) { 1251 ret = -ENOMEM; 1252 goto out; 1253 } 1254 1255 for (i = 0; i < TTM_MAX_BO_PRIORITY; ++i) 1256 INIT_LIST_HEAD(&glob->swap_lru[i]); 1257 INIT_LIST_HEAD(&glob->device_list); 1258 atomic_set(&glob->bo_count, 0); 1259 1260 ret = kobject_init_and_add( 1261 &glob->kobj, &ttm_bo_glob_kobj_type, ttm_get_kobj(), "buffer_objects"); 1262 if (unlikely(ret != 0)) 1263 kobject_put(&glob->kobj); 1264 out: 1265 mutex_unlock(&ttm_global_mutex); 1266 return ret; 1267 } 1268 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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