[hch-misc:hyperv-vmap 33/49] include/asm-generic/mshyperv.h:257:15: warning: 'hv_is_isolation_supported' used but never defined

[hch-misc:hyperv-vmap 33/49] include/asm-generic/mshyperv.h:257:15: warning: 'hv_is_isolation_supported' used but never defined

[kernel test robot]

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tree:   git://git.infradead.org/users/hch/misc.git hyperv-vmap
head:   8248f295928aded3364a1e54a4e0022e93d3610c
commit: d651b648d8897d388a1ad469ad36f627d3b09ef7 [33/49] x86/HV: Add new hvcall guest address host visibility support
config: x86_64-randconfig-a014-20210830 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        git remote add hch-misc git://git.infradead.org/users/hch/misc.git
        git fetch --no-tags hch-misc hyperv-vmap
        git checkout d651b648d8897d388a1ad469ad36f627d3b09ef7
        # save the attached .config to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kernel/cpu/ arch/x86/mm/pat/

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 >>):

   In file included from arch/x86/include/asm/mshyperv.h:217,
                    from arch/x86/mm/pat/set_memory.c:33:
   include/asm-generic/mshyperv.h:257:15: error: type defaults to 'int' in declaration of 'hv_is_isolation_supported' [-Werror=implicit-int]
     257 | static inline hv_is_isolation_supported(void);
         |               ^~~~~~~~~~~~~~~~~~~~~~~~~
   arch/x86/mm/pat/set_memory.c: In function '__set_memory_enc_dec':
   arch/x86/mm/pat/set_memory.c:2027:10: error: implicit declaration of function 'hv_set_mem_host_visibility' [-Werror=implicit-function-declaration]
    2027 |   return hv_set_mem_host_visibility(addr, numpages, !enc);
         |          ^~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from arch/x86/include/asm/mshyperv.h:217,
                    from arch/x86/mm/pat/set_memory.c:33:
   arch/x86/mm/pat/set_memory.c: At top level:
>> include/asm-generic/mshyperv.h:257:15: warning: 'hv_is_isolation_supported' used but never defined
     257 | static inline hv_is_isolation_supported(void);
         |               ^~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/hv_is_isolation_supported +257 include/asm-generic/mshyperv.h

   244	
   245	void hyperv_report_panic(struct pt_regs *regs, long err, bool in_die);
   246	bool hv_is_hyperv_initialized(void);
   247	bool hv_is_hibernation_supported(void);
   248	enum hv_isolation_type hv_get_isolation_type(void);
   249	bool hv_is_isolation_supported(void);
   250	bool hv_isolation_type_snp(void);
   251	void hyperv_cleanup(void);
   252	bool hv_query_ext_cap(u64 cap_query);
   253	#else /* CONFIG_HYPERV */
   254	static inline bool hv_is_hyperv_initialized(void) { return false; }
   255	static inline bool hv_is_hibernation_supported(void) { return false; }
   256	static inline void hyperv_cleanup(void) {}
 > 257	static inline hv_is_isolation_supported(void);
   258	#endif /* CONFIG_HYPERV */
   259	

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

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