[intel-tdx:guest 21/72] arch/x86/include/asm/realmode.h:96:6: error: implicit declaration of function 'is_tdx_guest'

[kernel test robot <lkp@intel.com>]

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tree:   https://github.com/intel/tdx.git guest
head:   01e6ec62425f8bb220d0644285e8858cc1e48992
commit: 89d81098346381a5e0b590804e137ccdce29c0b8 [21/72] x86/boot: Add a trampoline for APs booting in 64-bit mode
config: x86_64-kexec (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/89d81098346381a5e0b590804e137ccdce29c0b8
        git remote add intel-tdx https://github.com/intel/tdx.git
        git fetch --no-tags intel-tdx guest
        git checkout 89d81098346381a5e0b590804e137ccdce29c0b8
        # 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 errors (new ones prefixed by >>):

   In file included from arch/x86/realmode/init.c:9:
   arch/x86/include/asm/realmode.h: In function 'get_trampoline_start_ip':
>> arch/x86/include/asm/realmode.h:96:6: error: implicit declaration of function 'is_tdx_guest' [-Werror=implicit-function-declaration]
      96 |  if (is_tdx_guest())
         |      ^~~~~~~~~~~~
   cc1: some warnings being treated as errors
--
   In file included from arch/x86/kernel/head64.c:39:
   arch/x86/include/asm/realmode.h: In function 'get_trampoline_start_ip':
>> arch/x86/include/asm/realmode.h:96:6: error: implicit declaration of function 'is_tdx_guest' [-Werror=implicit-function-declaration]
      96 |  if (is_tdx_guest())
         |      ^~~~~~~~~~~~
   In file included from arch/x86/kernel/head64.c:43:
   arch/x86/include/asm/tdx.h: At top level:
>> arch/x86/include/asm/tdx.h:123:20: error: conflicting types for 'is_tdx_guest'
     123 | static inline bool is_tdx_guest(void)
         |                    ^~~~~~~~~~~~
   In file included from arch/x86/kernel/head64.c:39:
   arch/x86/include/asm/realmode.h:96:6: note: previous implicit declaration of 'is_tdx_guest' was here
      96 |  if (is_tdx_guest())
         |      ^~~~~~~~~~~~
   cc1: some warnings being treated as errors
--
   In file included from arch/x86/kernel/traps.c:46:
   arch/x86/include/asm/realmode.h: In function 'get_trampoline_start_ip':
>> arch/x86/include/asm/realmode.h:96:6: error: implicit declaration of function 'is_tdx_guest' [-Werror=implicit-function-declaration]
      96 |  if (is_tdx_guest())
         |      ^~~~~~~~~~~~
   In file included from arch/x86/kernel/traps.c:64:
   arch/x86/include/asm/tdx.h: At top level:
>> arch/x86/include/asm/tdx.h:123:20: error: conflicting types for 'is_tdx_guest'
     123 | static inline bool is_tdx_guest(void)
         |                    ^~~~~~~~~~~~
   In file included from arch/x86/kernel/traps.c:46:
   arch/x86/include/asm/realmode.h:96:6: note: previous implicit declaration of 'is_tdx_guest' was here
      96 |  if (is_tdx_guest())
         |      ^~~~~~~~~~~~
   arch/x86/kernel/traps.c:1144:13: warning: 've_raise_fault' defined but not used [-Wunused-function]
    1144 | static void ve_raise_fault(struct pt_regs *regs, long error_code)
         |             ^~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/is_tdx_guest +96 arch/x86/include/asm/realmode.h

    91	
    92	/* Common helper function to get start IP address */
    93	static inline unsigned long get_trampoline_start_ip(struct real_mode_header *rmh)
    94	{
    95	#ifdef CONFIG_X86_64
  > 96		if (is_tdx_guest())
    97			return rmh->trampoline_start64;
    98	#endif
    99		return rmh->trampoline_start;
   100	}
   101	

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

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