tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: bf2df406d75690971b837e37418494e09d8eec02 commit: 518c81d56c055affc71650b1ad1ba7f86e5ee867 [2445/2445] arch/x86/kvm: Support tkm virtualization config: x86_64-buildonly-randconfig-2002-20250702 (https://download.01.org/0day-ci/archive/20250702/202507021332.zHwpOcwr-lkp@i...) compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250702/202507021332.zHwpOcwr-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/202507021332.zHwpOcwr-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from arch/x86/kvm/psp.c:15:

...

include/linux/psp-hygon.h:219:5: warning: no previous prototype for 'psp_register_cmd_notifier' [-Wmissing-prototypes] 219 | int psp_register_cmd_notifier(uint32_t cmd_id, p2c_notifier_t notifier) { return -ENODEV; } | ^~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/psp-hygon.h:220:5: warning: no previous prototype for 'psp_unregister_cmd_notifier' [-Wmissing-prototypes] 220 | int psp_unregister_cmd_notifier(uint32_t cmd_id, p2c_notifier_t notifier) { return -ENODEV; } | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/kvm/psp.c:105:21: warning: no previous prototype for 'map_tbl_dump' [-Wmissing-prototypes] 105 | void __maybe_unused map_tbl_dump(const char *title, struct addr_map_tbls *tbls) | ^~~~~~~~~~~~ arch/x86/kvm/psp.c:118:21: warning: no previous prototype for 'g2h_tbl_dump' [-Wmissing-prototypes] 118 | void __maybe_unused g2h_tbl_dump(const char *title, struct gpa2hva_tbls *tbls) | ^~~~~~~~~~~~

vim +/psp_register_cmd_notifier +219 include/linux/psp-hygon.h d0b3a770d8e20d chench00 2024-08-01 218 d0b3a770d8e20d chench00 2024-08-01 @219 int psp_register_cmd_notifier(uint32_t cmd_id, p2c_notifier_t notifier) { return -ENODEV; } d0b3a770d8e20d chench00 2024-08-01 @220 int psp_unregister_cmd_notifier(uint32_t cmd_id, p2c_notifier_t notifier) { return -ENODEV; } d0b3a770d8e20d chench00 2024-08-01 221 :::::: The code at line 219 was first introduced by commit :::::: d0b3a770d8e20d953fe2a74ea8c4b5f4767c4add crypto: command co-processor: Add another mailbox interrupt support for PSP sending command to X86 :::::: TO: chench00 <chench@hygon.cn> :::::: CC: chench00 <chench@hygon.cn> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki