Hi Roman, kernel test robot noticed the following build warnings: [auto build test WARNING on 2e03358be78b65d28b66e17aca9e0c8700b0df78] url: https://github.com/intel-lab-lkp/linux/commits/Roman-Kisel/x86-hyperv-VTL-mode-emergency-restart-callback/20250118-050923 base: 2e03358be78b65d28b66e17aca9e0c8700b0df78 patch link: https://lore.kernel.org/r/20250117210702.1529580-3-romank%40linux.microsoft.com patch subject: [PATCH hyperv-next 2/2] x86/hyperv: VTL mode callback for restarting the system config: x86_64-buildonly-randconfig-003-20250118 (https://download.01.org/0day-ci/archive/20250118/202501182304.lZJpR7pL-lkp@xxxxxxxxx/config) compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250118/202501182304.lZJpR7pL-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/202501182304.lZJpR7pL-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> arch/x86/hyperv/hv_vtl.c:48:46: warning: omitting the parameter name in a function definition is a C23 extension [-Wc23-extensions] 48 | static void __noreturn hv_vtl_restart(char *) | ^ 1 warning generated. vim +48 arch/x86/hyperv/hv_vtl.c 46 47 /* The only way to restart is triple fault */ > 48 static void __noreturn hv_vtl_restart(char *) 49 { 50 hv_vtl_emergency_restart(); 51 } 52 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki