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De Francesco" , linux-cxl@vger.kernel.org Cc: oe-kbuild-all@lists.linux.dev, Davidlohr Bueso , Jonathan Cameron , Dave Jiang , Alison Schofield , Vishal Verma , Ira Weiny , Dan Williams , Jonathan Corbet , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Gregory Price , Robert Richter , Cheatham Benjamin , "Fabio M. De Francesco" Subject: Re: [PATCH 2/4 v5] cxl/core: Add helpers to detect Low Memory Holes on x86 Message-ID: <202510101555.zofjGvZF-lkp@intel.com> References: <20251006155836.791418-3-fabio.m.de.francesco@linux.intel.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251006155836.791418-3-fabio.m.de.francesco@linux.intel.com> Hi Fabio, kernel test robot noticed the following build errors: [auto build test ERROR on 46037455cbb748c5e85071c95f2244e81986eb58] url: https://github.com/intel-lab-lkp/linux/commits/Fabio-M-De-Francesco/cxl-core-Change-match_-_by_range-signatures/20251010-111627 base: 46037455cbb748c5e85071c95f2244e81986eb58 patch link: https://lore.kernel.org/r/20251006155836.791418-3-fabio.m.de.francesco%40linux.intel.com patch subject: [PATCH 2/4 v5] cxl/core: Add helpers to detect Low Memory Holes on x86 config: i386-buildonly-randconfig-005-20251010 (https://download.01.org/0day-ci/archive/20251010/202510101555.zofjGvZF-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251010/202510101555.zofjGvZF-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202510101555.zofjGvZF-lkp@intel.com/ All errors (new ones prefixed by >>): ld: drivers/cxl/core/platform_quirks.o: in function `platform_res_adjust': >> drivers/cxl/core/platform_quirks.c:95:(.text+0x1f1): undefined reference to `__udivdi3' vim +95 drivers/cxl/core/platform_quirks.c 76 77 void platform_res_adjust(struct resource *res, 78 struct cxl_endpoint_decoder *cxled, 79 const struct cxl_root_decoder *cxlrd) 80 { 81 if (!platform_cxlrd_matches_cxled(cxlrd, cxled)) 82 return; 83 84 guard(rwsem_write)(&cxl_rwsem.dpa); 85 dev_dbg(cxled_to_memdev(cxled)->dev.parent, 86 "Low Memory Hole detected. Resources were (%s: %pr, %pr)\n", 87 dev_name(&cxled->cxld.dev), res, cxled->dpa_res); 88 if (res) { 89 /* Trim region resource overlap with LMH */ 90 res->end = cxlrd->res->end; 91 } 92 /* Match endpoint decoder's DPA resource to root decoder's */ 93 cxled->dpa_res->end = 94 cxled->dpa_res->start + > 95 resource_size(cxlrd->res) / cxled->cxld.interleave_ways - 1; -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki