[kbuild-all] [intel-tdx:tdx/guest-rebased 104/133] arch/x86/kernel/tdx.c:508:14: warning: no previous prototype for 'tdx_write_msr'

tree: https://github.com/intel/tdx.git tdx/guest-rebased head: e3995864d37c56f431c93fc3dc454d9c65f5e9ea commit: 95bf288c8d7a4e30ca710931bfb0deb2a6f020e7 [104/133] x86/tdx: Use direct paravirt call for wrmsrl config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220114/202201140330.80EFnRRg-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/intel/tdx/commit/95bf288c8d7a4e30ca710931bfb0deb2a6f020e7 git remote add intel-tdx https://github.com/intel/tdx.git git fetch --no-tags intel-tdx tdx/guest-rebased git checkout 95bf288c8d7a4e30ca710931bfb0deb2a6f020e7 # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kernel/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): arch/x86/kernel/tdx.c:267:5: warning: no previous prototype for 'tdx_hcall_set_notify_intr' [-Wmissing-prototypes] 267 | int tdx_hcall_set_notify_intr(u8 vector) | ^~~~~~~~~~~~~~~~~~~~~~~~~ 508 | void notrace tdx_write_msr(unsigned int msr, u32 low, u32 high) | ^~~~~~~~~~~~~ vim +/tdx_write_msr +508 arch/x86/kernel/tdx.c 507 509 { 510 if (tdx_fast_tdcall_path_msr(msr)) 511 __tdx_write_msr(msr, low, high); 512 else 513 native_write_msr(msr, low, high); 514 } 515 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org