Hi Peter, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: e74aedc9df70f84e50a280478b93d98b3a622bc3 commit: 822da186955cbcd69b4715b8a307053e6c756f30 [2451/2451] x86/ibt,paravirt: Use text_gen_insn() for paravirt_patch() config: x86_64-buildonly-randconfig-005-20241119 (https://download.01.org/0day-ci/archive/20241120/202411201154.x6DQX3dV-lkp@i...) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241120/202411201154.x6DQX3dV-lkp@i...) 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@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202411201154.x6DQX3dV-lkp@intel.com/ All errors (new ones prefixed by >>): arch/x86/kernel/paravirt.c: In function 'paravirt_patch_call':

...

arch/x86/kernel/paravirt.c:65:9: error: implicit declaration of function '__text_gen_insn' [-Werror=implicit-function-declaration] 65 | __text_gen_insn(insn_buff, CALL_INSN_OPCODE, | ^~~~~~~~~~~~~~~ arch/x86/kernel/paravirt.c:65:36: error: 'CALL_INSN_OPCODE' undeclared (first use in this function) 65 | __text_gen_insn(insn_buff, CALL_INSN_OPCODE, | ^~~~~~~~~~~~~~~~ arch/x86/kernel/paravirt.c:65:36: note: each undeclared identifier is reported only once for each function it appears in arch/x86/kernel/paravirt.c:66:47: error: 'CALL_INSN_SIZE' undeclared (first use in this function) 66 | (void *)addr, target, CALL_INSN_SIZE); | ^~~~~~~~~~~~~~ arch/x86/kernel/paravirt.c:68:1: warning: control reaches end of non-void function [-Wreturn-type] 68 | } | ^ cc1: some warnings being treated as errors

vim +/__text_gen_insn +65 arch/x86/kernel/paravirt.c 61 62 static unsigned paravirt_patch_call(void *insn_buff, const void *target, 63 unsigned long addr, unsigned len) 64 {

65 __text_gen_insn(insn_buff, CALL_INSN_OPCODE, 66 (void *)addr, target, CALL_INSN_SIZE); 67 return CALL_INSN_SIZE; 68 } 69

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