tree:   https://android.googlesource.com/kernel/common android14-5.15
head:   94958d875ed3c617e2ff30a25e7b949e4fd0be45
commit: e7c5cd5110061d3e784b87b52c92da04eaa77a03 [20/25] ANDROID: KVM: arm64: Add support for custom hypercall registration
config: arm64-allyesconfig
compiler: aarch64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git remote add android-common https://android.googlesource.com/kernel/common
        git fetch --no-tags android-common android14-5.15
        git checkout e7c5cd5110061d3e784b87b52c92da04eaa77a03
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kvm/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   arch/arm64/kvm/pkvm.c:493:5: warning: no previous prototype for '__pkvm_load_el2_module' [-Wmissing-prototypes]
     493 | int __pkvm_load_el2_module(struct pkvm_el2_module *mod, struct module *this,
         |     ^~~~~~~~~~~~~~~~~~~~~~
>> arch/arm64/kvm/pkvm.c:565:5: warning: no previous prototype for '__pkvm_register_el2_call' [-Wmissing-prototypes]
     565 | int __pkvm_register_el2_call(dyn_hcall_t hfn, unsigned long token,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~


vim +/__pkvm_register_el2_call +565 arch/arm64/kvm/pkvm.c

   564	
 > 565	int __pkvm_register_el2_call(dyn_hcall_t hfn, unsigned long token,

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp