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Subject[intel-tdx:guest 104/144] arch/x86/kernel/tdx.c:491:14: warning: no previous prototype for 'tdx_write_msr'
tree:   https://github.com/intel/tdx.git guest
head: 41fe88a1b3c28543f49fa6ed9e0e9b6650ed7614
commit: 112748701181f3a7ab49d21bcf7920b983b05af2 [104/144] x86/tdx: Use direct paravirt call for wrmsrl
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20211208/202112080508.FqEbBAvi-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/112748701181f3a7ab49d21bcf7920b983b05af2
git remote add intel-tdx https://github.com/intel/tdx.git
git fetch --no-tags intel-tdx guest
git checkout 112748701181f3a7ab49d21bcf7920b983b05af2
# 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:268:5: warning: no previous prototype for 'tdx_hcall_set_notify_intr' [-Wmissing-prototypes]
268 | int tdx_hcall_set_notify_intr(u8 vector)
| ^~~~~~~~~~~~~~~~~~~~~~~~~
>> arch/x86/kernel/tdx.c:491:14: warning: no previous prototype for 'tdx_write_msr' [-Wmissing-prototypes]
491 | void notrace tdx_write_msr(unsigned int msr, u32 low, u32 high)
| ^~~~~~~~~~~~~


vim +/tdx_write_msr +491 arch/x86/kernel/tdx.c

490
> 491 void notrace tdx_write_msr(unsigned int msr, u32 low, u32 high)
492 {
493 if (tdx_fast_tdcall_path_msr(msr))
494 tdx_write_msr_safe(msr, low, high);
495 else
496 native_write_msr(msr, low, high);
497 }
498

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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