[kbuild-all] arch/x86/kvm/cpuid.c:128:26: warning: no previous prototype for function 'kvm_find_kvm_cpuid_features'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: c8c109546a19613d323a319d0c921cb1f317e629 commit: 760849b1476c94da4cca5d3a5f0a1f64ffc92ba4 KVM: x86: Make sure KVM_CPUID_FEATURES really are KVM_CPUID_FEATURES date: 2 days ago config: x86_64-randconfig-a016-20211113 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c3dddeeafb529e769cde87bd29ef6271ac6bfa5c) 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 # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 760849b1476c94da4cca5d3a5f0a1f64ffc92ba4 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): struct kvm_cpuid_entry2 *kvm_find_kvm_cpuid_features(struct kvm_vcpu *vcpu) ^ arch/x86/kvm/cpuid.c:128:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct kvm_cpuid_entry2 *kvm_find_kvm_cpuid_features(struct kvm_vcpu *vcpu) ^ static 1 warning generated. vim +/kvm_find_kvm_cpuid_features +128 arch/x86/kvm/cpuid.c 127 129 { 130 u32 base = vcpu->arch.kvm_cpuid_base; 131 132 if (!base) 133 return NULL; 134 135 return kvm_find_cpuid_entry(vcpu, base | KVM_CPUID_FEATURES, 0); 136 } 137 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org