Hi Robert, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on drm-tip/drm-tip] [cannot apply to drm-intel/for-linux-next drm-exynos/exynos-drm-next drm/drm-next tegra-drm/drm/tegra/for-next airlied/drm-next v5.16 next-20220121] [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/Robert-Beckett/discrete-card-64K... base: git://anongit.freedesktop.org/drm/drm-tip drm-tip config: i386-randconfig-s002 (https://download.01.org/0day-ci/archive/20220122/202201221653.skxdQmaG-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://github.com/0day-ci/linux/commit/e7a6d547c26b78357dbad93dc9d8df90b... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Robert-Beckett/discrete-card-64K-page-support/20220121-044244 git checkout e7a6d547c26b78357dbad93dc9d8df90bc51d025 # save the config file to linux build tree mkdir build_dir make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/gpu/drm/i915/i915_gem_gtt.c: note: in included file: vim +1146 drivers/gpu/drm/i915/selftests/i915_gem_gtt.c 1131 1132 static int misaligned_pin(struct i915_address_space *vm, 1133 u64 hole_start, u64 hole_end, 1134 unsigned long end_time) 1135 { 1136 struct intel_memory_region *mr; 1137 enum intel_region_id id; 1138 unsigned long flags = PIN_OFFSET_FIXED | PIN_USER; 1139 int err = 0; 1140 u64 hole_size = hole_end - hole_start; 1141 1142 if (i915_is_ggtt(vm)) 1143 flags |= PIN_GLOBAL; 1144 1145 for_each_memory_region(mr, vm->i915, id) { 1147 u64 size = min_alignment; 1148 u64 addr = round_up(hole_start + (hole_size / 2), min_alignment); 1149 1150 /* we can't test < 4k alignment due to flags being encoded in lower bits */ 1151 if (min_alignment != I915_GTT_PAGE_SIZE_4K) { 1152 err = misaligned_case(vm, mr, addr + (min_alignment / 2), size, flags); 1153 /* misaligned should error with -EINVAL*/ 1154 if (!err) 1155 err = -EBADSLT; 1156 if (err != -EINVAL) 1157 return err; 1158 } 1159 1160 /* test for vma->size expansion to min page size */ 1161 err = misaligned_case(vm, mr, addr, PAGE_SIZE, flags); 1162 if (min_alignment > hole_size) { 1163 if (!err) 1164 err = -EBADSLT; 1165 else if (err == -ENOSPC) 1166 err = 0; 1167 } 1168 if (err) 1169 return err; 1170 1171 /* test for intermediate size not expanding vma->size for large alignments */ 1172 err = misaligned_case(vm, mr, addr, size / 2, flags); 1173 if (min_alignment > hole_size) { 1174 if (!err) 1175 err = -EBADSLT; 1176 else if (err == -ENOSPC) 1177 err = 0; 1178 } 1179 if (err) 1180 return err; 1181 } 1182 1183 return 0; 1184 } 1185 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org