Hi Matthew, Thank you for the patch! Yet something to improve: [auto build test ERROR on drm-intel/for-linux-next] [also build test ERROR on v5.15-rc6 next-20211021] [cannot apply to drm-tip/drm-tip] [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/Matthew-Auld/drm-i915-mark-dmabu... base: git://anongit.freedesktop.org/drm-intel for-linux-next config: x86_64-randconfig-a015-20211019 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/108491e634ed9e2e220cf01b127399bfa... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Matthew-Auld/drm-i915-mark-dmabuf-objects-as-ALLOC_USER/20211019-020842 git checkout 108491e634ed9e2e220cf01b127399bfa4598764 # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c: In function 'i915_gem_object_get_pages_dmabuf': 248 | wbinvd_on_all_cpus(); | ^~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/wbinvd_on_all_cpus +248 drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c 232 233 static int i915_gem_object_get_pages_dmabuf(struct drm_i915_gem_object *obj) 234 { 235 struct drm_i915_private *i915 = to_i915(obj->base.dev); 236 struct sg_table *pages; 237 unsigned int sg_page_sizes; 238 239 assert_object_held(obj); 240 241 pages = dma_buf_map_attachment(obj->base.import_attach, 242 DMA_BIDIRECTIONAL); 243 if (IS_ERR(pages)) 244 return PTR_ERR(pages); 245 246 /* XXX: consider doing a vmap flush or something */ 247 if (!HAS_LLC(i915) || i915_gem_object_can_bypass_llc(obj)) 249 250 sg_page_sizes = i915_sg_dma_sizes(pages->sgl); 251 __i915_gem_object_set_pages(obj, pages, sg_page_sizes); 252 253 return 0; 254 } 255 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org