tree: https://gitee.com/openeuler/kernel.git OLK-5.10 head: 0d616a77cb5f7198cca524a24f717f59ad51b41b commit: 822da186955cbcd69b4715b8a307053e6c756f30 [2821/2821] x86/ibt,paravirt: Use text_gen_insn() for paravirt_patch() config: x86_64-buildonly-randconfig-003-20250325 (https://download.01.org/0day-ci/archive/20250325/202503252017.UYNRpRjt-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/20250325/202503252017.UYNRpRjt-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/202503252017.UYNRpRjt-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: error: control reaches end of non-void function [-Werror=return-type] 68 | } | ^ cc1: some warnings being treated as errors

vim +68 arch/x86/kernel/paravirt.c 19d36ccdc34f5e arch/i386/kernel/paravirt.c Andi Kleen 2007-07-22 61 1fc654cf6e04b4 arch/x86/kernel/paravirt.c Ingo Molnar 2019-04-25 62 static unsigned paravirt_patch_call(void *insn_buff, const void *target, abc745f85c1193 arch/x86/kernel/paravirt.c Juergen Gross 2018-08-28 63 unsigned long addr, unsigned len) 63f70270ccd981 arch/i386/kernel/paravirt.c Jeremy Fitzhardinge 2007-05-02 64 { 822da186955cbc arch/x86/kernel/paravirt.c Peter Zijlstra 2022-03-08 65 __text_gen_insn(insn_buff, CALL_INSN_OPCODE, 822da186955cbc arch/x86/kernel/paravirt.c Peter Zijlstra 2022-03-08 66 (void *)addr, target, CALL_INSN_SIZE); 822da186955cbc arch/x86/kernel/paravirt.c Peter Zijlstra 2022-03-08 67 return CALL_INSN_SIZE; 63f70270ccd981 arch/i386/kernel/paravirt.c Jeremy Fitzhardinge 2007-05-02 @68 } 63f70270ccd981 arch/i386/kernel/paravirt.c Jeremy Fitzhardinge 2007-05-02 69 :::::: The code at line 68 was first introduced by commit :::::: 63f70270ccd981ce40a8ff58c03a8c2e97e368be [PATCH] i386: PARAVIRT: add common patching machinery :::::: TO: Jeremy Fitzhardinge <jeremy@goop.org> :::::: CC: Andi Kleen <andi@basil.nowhere.org> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki