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Subject[intel-tdx:guest 100/127] arch/x86/kernel/tdx.c:427:14: warning: no previous prototype for 'tdx_write_msr'
tree:   https://github.com/intel/tdx.git guest
head: c748712bd17bbd7f8a75553911a5557f3d7d32b2
commit: 2ea8a5cdb921187dea2d10db2aa5ad47d6e6ac03 [100/127] x86/tdx: Use direct paravirt call for wrmsrl
config: x86_64-allyesconfig (attached as .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/2ea8a5cdb921187dea2d10db2aa5ad47d6e6ac03
git remote add intel-tdx https://github.com/intel/tdx.git
git fetch --no-tags intel-tdx guest
git checkout 2ea8a5cdb921187dea2d10db2aa5ad47d6e6ac03
# save the attached .config to linux build tree
make W=1 ARCH=x86_64

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:256:5: warning: no previous prototype for 'tdx_hcall_set_notify_intr' [-Wmissing-prototypes]
256 | int tdx_hcall_set_notify_intr(u8 vector)
| ^~~~~~~~~~~~~~~~~~~~~~~~~
>> arch/x86/kernel/tdx.c:427:14: warning: no previous prototype for 'tdx_write_msr' [-Wmissing-prototypes]
427 | void notrace tdx_write_msr(unsigned int msr, u32 low, u32 high)
| ^~~~~~~~~~~~~


vim +/tdx_write_msr +427 arch/x86/kernel/tdx.c

426
> 427 void notrace tdx_write_msr(unsigned int msr, u32 low, u32 high)
428 {
429 if (tdx_is_context_switched_msr(msr))
430 native_write_msr(msr, low, high);
431 else
432 tdx_write_msr_safe(msr, low, high);
433 }
434

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