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: i386-randconfig-011-20260115 (https://download.01.org/0day-ci/archive/20260115/[email protected]/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) 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 >>): >> drivers/cpufreq/longhaul.c:145:2: error: call to undeclared function >> 'arch_safe_halt'; ISO C99 and later do not support implicit function >> declarations [-Wimplicit-function-declaration] 145 | safe_halt(); | ^ include/linux/irqflags.h:231:3: note: expanded from macro 'safe_halt' 231 | raw_safe_halt(); \ | ^ include/linux/irqflags.h:192:27: note: expanded from macro 'raw_safe_halt' 192 | #define raw_safe_halt() arch_safe_halt() | ^ >> drivers/cpufreq/longhaul.c:150:2: error: call to undeclared function 'halt'; >> ISO C99 and later do not support implicit function declarations >> [-Wimplicit-function-declaration] 150 | halt(); | ^ drivers/cpufreq/longhaul.c:179:2: error: call to undeclared function 'arch_safe_halt'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 179 | safe_halt(); | ^ include/linux/irqflags.h:231:3: note: expanded from macro 'safe_halt' 231 | raw_safe_halt(); \ | ^ include/linux/irqflags.h:192:27: note: expanded from macro 'raw_safe_halt' 192 | #define raw_safe_halt() arch_safe_halt() | ^ drivers/cpufreq/longhaul.c:187:4: error: call to undeclared function 'halt'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 187 | halt(); | ^ drivers/cpufreq/longhaul.c:205:3: error: call to undeclared function 'halt'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 205 | halt(); | ^ drivers/cpufreq/longhaul.c:224:4: error: call to undeclared function 'halt'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 224 | halt(); | ^ drivers/cpufreq/longhaul.c:165:6: warning: variable 't' set but not used [-Wunused-but-set-variable] 165 | u32 t; | ^ 1 warning and 6 errors generated. vim +/arch_safe_halt +145 drivers/cpufreq/longhaul.c ^1da177e4c3f41 arch/i386/kernel/cpu/cpufreq/longhaul.c Linus Torvalds 2005-04-16 134 ac617bd0f7b959 arch/x86/kernel/cpu/cpufreq/longhaul.c Dave Jones 2009-01-17 135 static void do_longhaul1(unsigned int mults_index) ^1da177e4c3f41 arch/i386/kernel/cpu/cpufreq/longhaul.c Linus Torvalds 2005-04-16 136 { dadb49d8746bc4 arch/i386/kernel/cpu/cpufreq/longhaul.c Rafa� Bilski 2006-07-03 137 union msr_bcr2 bcr2; ^1da177e4c3f41 arch/i386/kernel/cpu/cpufreq/longhaul.c Linus Torvalds 2005-04-16 138 c435e608cf59ff drivers/cpufreq/longhaul.c Ingo Molnar 2025-04-09 139 rdmsrq(MSR_VIA_BCR2, bcr2.val); dadb49d8746bc4 arch/i386/kernel/cpu/cpufreq/longhaul.c Rafa� Bilski 2006-07-03 140 /* Enable software clock multiplier */ dadb49d8746bc4 arch/i386/kernel/cpu/cpufreq/longhaul.c Rafa� Bilski 2006-07-03 141 bcr2.bits.ESOFTBF = 1; ac617bd0f7b959 arch/x86/kernel/cpu/cpufreq/longhaul.c Dave Jones 2009-01-17 142 bcr2.bits.CLOCKMUL = mults_index & 0xff; dadb49d8746bc4 arch/i386/kernel/cpu/cpufreq/longhaul.c Rafa� Bilski 2006-07-03 143 dadb49d8746bc4 arch/i386/kernel/cpu/cpufreq/longhaul.c Rafa� Bilski 2006-07-03 144 /* Sync to timer tick */ dadb49d8746bc4 arch/i386/kernel/cpu/cpufreq/longhaul.c Rafa� Bilski 2006-07-03 @145 safe_halt(); dadb49d8746bc4 arch/i386/kernel/cpu/cpufreq/longhaul.c Rafa� Bilski 2006-07-03 146 /* Change frequency on next halt or sleep */ 78255eb2397332 drivers/cpufreq/longhaul.c Ingo Molnar 2025-04-09 147 wrmsrq(MSR_VIA_BCR2, bcr2.val); 179da8e6e8903a arch/i386/kernel/cpu/cpufreq/longhaul.c Rafa� Bilski 2006-08-08 148 /* Invoke transition */ 179da8e6e8903a arch/i386/kernel/cpu/cpufreq/longhaul.c Rafa� Bilski 2006-08-08 149 ACPI_FLUSH_CPU_CACHE(); 179da8e6e8903a arch/i386/kernel/cpu/cpufreq/longhaul.c Rafa� Bilski 2006-08-08 @150 halt(); dadb49d8746bc4 arch/i386/kernel/cpu/cpufreq/longhaul.c Rafa� Bilski 2006-07-03 151 dadb49d8746bc4 arch/i386/kernel/cpu/cpufreq/longhaul.c Rafa� Bilski 2006-07-03 152 /* Disable software clock multiplier */ dadb49d8746bc4 arch/i386/kernel/cpu/cpufreq/longhaul.c Rafa� Bilski 2006-07-03 153 local_irq_disable(); c435e608cf59ff drivers/cpufreq/longhaul.c Ingo Molnar 2025-04-09 154 rdmsrq(MSR_VIA_BCR2, bcr2.val); dadb49d8746bc4 arch/i386/kernel/cpu/cpufreq/longhaul.c Rafa� Bilski 2006-07-03 155 bcr2.bits.ESOFTBF = 0; 78255eb2397332 drivers/cpufreq/longhaul.c Ingo Molnar 2025-04-09 156 wrmsrq(MSR_VIA_BCR2, bcr2.val); ^1da177e4c3f41 arch/i386/kernel/cpu/cpufreq/longhaul.c Linus Torvalds 2005-04-16 157 } ^1da177e4c3f41 arch/i386/kernel/cpu/cpufreq/longhaul.c Linus Torvalds 2005-04-16 158 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
