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

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

[kernel test robot]

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-lkp@intel.com/config)
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@intel.com>

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)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~
>> arch/x86/kernel/tdx.c:508:14: warning: no previous prototype for 'tdx_write_msr' [-Wmissing-prototypes]
     508 | void notrace tdx_write_msr(unsigned int msr, u32 low, u32 high)
         |              ^~~~~~~~~~~~~


vim +/tdx_write_msr +508 arch/x86/kernel/tdx.c

   507	
 > 508	void notrace tdx_write_msr(unsigned int msr, u32 low, u32 high)
   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