Hi Jiaxun, kernel test robot noticed the following build errors: [auto build test ERROR on linus/master] [also build test ERROR on v6.7-rc4 next-20231205] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Jiaxun-Yang/MIPS-Implement-microMIPS-MT-ASE-helpers/20231201-201823 base: linus/master patch link: https://lore.kernel.org/r/20231201121101.90714-1-jiaxun.yang%40flygoat.com patch subject: [PATCH] MIPS: Implement microMIPS MT ASE helpers config: mips-xway_defconfig (https://download.01.org/0day-ci/archive/20231205/202312052344.xESwjhJU-lkp@xxxxxxxxx/config) compiler: mips-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231205/202312052344.xESwjhJU-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202312052344.xESwjhJU-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): arch/mips/kernel/vpe-mt.c:177:7: warning: no previous prototype for 'vpe_alloc' [-Wmissing-prototypes] 177 | void *vpe_alloc(void) | ^~~~~~~~~ arch/mips/kernel/vpe-mt.c:195:5: warning: no previous prototype for 'vpe_start' [-Wmissing-prototypes] 195 | int vpe_start(void *vpe, unsigned long start) | ^~~~~~~~~ arch/mips/kernel/vpe-mt.c:205:5: warning: no previous prototype for 'vpe_stop' [-Wmissing-prototypes] 205 | int vpe_stop(void *vpe) | ^~~~~~~~ arch/mips/kernel/vpe-mt.c:226:5: warning: no previous prototype for 'vpe_free' [-Wmissing-prototypes] 226 | int vpe_free(void *vpe) | ^~~~~~~~ vpe-mt.c: Assembler messages: >> vpe-mt.c:4963: Error: Unable to parse register name 7 vpe-mt.c:4967: Info: macro invoked from here {standard input}:4972: Info: macro invoked from here vpe-mt.c:5083: Error: Unable to parse register name 6 vpe-mt.c:5087: Info: macro invoked from here {standard input}:5092: Info: macro invoked from here -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki