Hi Juergen, kernel test robot noticed the following build errors:
[auto build test ERROR on tip/master] [also build test ERROR on next-20260115] [cannot apply to kvm/queue kvm/next tip/x86/core kvm/linux-next tip/auto-latest linus/master v6.19-rc5] [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/Juergen-Gross/x86-paravirt-Replace-io_delay-hook-with-a-bool/20260115-165320 base: tip/master patch link: https://lore.kernel.org/r/20260115084849.31502-2-jgross%40suse.com patch subject: [PATCH v3 1/5] x86/paravirt: Replace io_delay() hook with a bool config: x86_64-randconfig-006-20260115 (https://download.01.org/0day-ci/archive/20260115/[email protected]/config) compiler: gcc-12 (Debian 12.4.0-5) 12.4.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260115/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All errors (new ones prefixed by >>): arch/x86/kernel/tboot.c: In function 'tboot_shutdown': >> arch/x86/kernel/tboot.c:255:17: error: implicit declaration of function >> 'halt' [-Werror=implicit-function-declaration] 255 | halt(); | ^~~~ cc1: some warnings being treated as errors vim +/halt +255 arch/x86/kernel/tboot.c 58c41d28259c24 H. Peter Anvin 2009-08-14 225 3162534069597e Joseph Cihula 2009-06-30 226 void tboot_shutdown(u32 shutdown_type) 3162534069597e Joseph Cihula 2009-06-30 227 { 3162534069597e Joseph Cihula 2009-06-30 228 void (*shutdown)(void); 3162534069597e Joseph Cihula 2009-06-30 229 3162534069597e Joseph Cihula 2009-06-30 230 if (!tboot_enabled()) 3162534069597e Joseph Cihula 2009-06-30 231 return; 3162534069597e Joseph Cihula 2009-06-30 232 11520e5e7c1855 Linus Torvalds 2012-12-15 233 /* 11520e5e7c1855 Linus Torvalds 2012-12-15 234 * if we're being called before the 1:1 mapping is set up then just 11520e5e7c1855 Linus Torvalds 2012-12-15 235 * return and let the normal shutdown happen; this should only be 11520e5e7c1855 Linus Torvalds 2012-12-15 236 * due to very early panic() 11520e5e7c1855 Linus Torvalds 2012-12-15 237 */ 11520e5e7c1855 Linus Torvalds 2012-12-15 238 if (!tboot_pg_dir) 11520e5e7c1855 Linus Torvalds 2012-12-15 239 return; 11520e5e7c1855 Linus Torvalds 2012-12-15 240 3162534069597e Joseph Cihula 2009-06-30 241 /* if this is S3 then set regions to MAC */ 3162534069597e Joseph Cihula 2009-06-30 242 if (shutdown_type == TB_SHUTDOWN_S3) 58c41d28259c24 H. Peter Anvin 2009-08-14 243 if (tboot_setup_sleep()) 58c41d28259c24 H. Peter Anvin 2009-08-14 244 return; 3162534069597e Joseph Cihula 2009-06-30 245 3162534069597e Joseph Cihula 2009-06-30 246 tboot->shutdown_type = shutdown_type; 3162534069597e Joseph Cihula 2009-06-30 247 3162534069597e Joseph Cihula 2009-06-30 248 switch_to_tboot_pt(); 3162534069597e Joseph Cihula 2009-06-30 249 3162534069597e Joseph Cihula 2009-06-30 250 shutdown = (void(*)(void))(unsigned long)tboot->shutdown_entry; 3162534069597e Joseph Cihula 2009-06-30 251 shutdown(); 3162534069597e Joseph Cihula 2009-06-30 252 3162534069597e Joseph Cihula 2009-06-30 253 /* should not reach here */ 3162534069597e Joseph Cihula 2009-06-30 254 while (1) 3162534069597e Joseph Cihula 2009-06-30 @255 halt(); 3162534069597e Joseph Cihula 2009-06-30 256 } 3162534069597e Joseph Cihula 2009-06-30 257 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
