tree: https://github.com/intel/tdx.git kvm-upstream head: bdfe06c17daab60c196ff80c1d98467a1d3734fa commit: 23fe81f995e342b4152daa56cad4105a72277d4f [116/152] KVM: TDX: Add a place holder to handle TDX VM exit config: x86_64-randconfig-a013-20211216 (https://download.01.org/0day-ci/archive/20211217/202112171316.zV7lPxFK-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project dd245bab9fbb364faa1581e4f92ba3119a872fba) 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://github.com/intel/tdx/commit/23fe81f995e342b4152daa56cad4105a72277d4f git remote add intel-tdx https://github.com/intel/tdx.git git fetch --no-tags intel-tdx kvm-upstream git checkout 23fe81f995e342b4152daa56cad4105a72277d4f # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/kvm/ 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 >>): arch/x86/kvm/vmx/tdx_stubs.c:4:13: warning: no previous prototype for function 'tdx_pre_kvm_init' [-Wmissing-prototypes] void __init tdx_pre_kvm_init(unsigned int *vcpu_size, ^ arch/x86/kvm/vmx/tdx_stubs.c:4:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void __init tdx_pre_kvm_init(unsigned int *vcpu_size, ^ static arch/x86/kvm/vmx/tdx_stubs.c:6:12: warning: no previous prototype for function 'tdx_hardware_setup' [-Wmissing-prototypes] int __init tdx_hardware_setup(struct kvm_x86_ops *x86_ops) { return -EOPNOTSUPP; } ^ arch/x86/kvm/vmx/tdx_stubs.c:6:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int __init tdx_hardware_setup(struct kvm_x86_ops *x86_ops) { return -EOPNOTSUPP; } ^ static arch/x86/kvm/vmx/tdx_stubs.c:7:6: warning: no previous prototype for function 'tdx_hardware_enable' [-Wmissing-prototypes] void tdx_hardware_enable(void) {} ^ arch/x86/kvm/vmx/tdx_stubs.c:7:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void tdx_hardware_enable(void) {} ^ static arch/x86/kvm/vmx/tdx_stubs.c:8:6: warning: no previous prototype for function 'tdx_hardware_disable' [-Wmissing-prototypes] void tdx_hardware_disable(void) {} ^ arch/x86/kvm/vmx/tdx_stubs.c:8:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void tdx_hardware_disable(void) {} ^ static arch/x86/kvm/vmx/tdx_stubs.c:10:5: warning: no previous prototype for function 'tdx_vcpu_create' [-Wmissing-prototypes] int tdx_vcpu_create(struct kvm_vcpu *vcpu) { return -EOPNOTSUPP; } ^ arch/x86/kvm/vmx/tdx_stubs.c:10:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int tdx_vcpu_create(struct kvm_vcpu *vcpu) { return -EOPNOTSUPP; } ^ static arch/x86/kvm/vmx/tdx_stubs.c:11:6: warning: no previous prototype for function 'tdx_vcpu_free' [-Wmissing-prototypes] void tdx_vcpu_free(struct kvm_vcpu *vcpu) {} ^ arch/x86/kvm/vmx/tdx_stubs.c:11:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void tdx_vcpu_free(struct kvm_vcpu *vcpu) {} ^ static arch/x86/kvm/vmx/tdx_stubs.c:12:6: warning: no previous prototype for function 'tdx_vcpu_reset' [-Wmissing-prototypes] void tdx_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event) {} ^ arch/x86/kvm/vmx/tdx_stubs.c:12:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void tdx_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event) {} ^ static arch/x86/kvm/vmx/tdx_stubs.c:13:12: warning: no previous prototype for function 'tdx_vcpu_run' [-Wmissing-prototypes] fastpath_t tdx_vcpu_run(struct kvm_vcpu *vcpu) { return EXIT_FASTPATH_NONE; } ^ arch/x86/kvm/vmx/tdx_stubs.c:13:1: note: declare 'static' if the function is not intended to be used outside of this translation unit fastpath_t tdx_vcpu_run(struct kvm_vcpu *vcpu) { return EXIT_FASTPATH_NONE; } ^ static arch/x86/kvm/vmx/tdx_stubs.c:14:6: warning: no previous prototype for function 'tdx_vcpu_load' [-Wmissing-prototypes] void tdx_vcpu_load(struct kvm_vcpu *vcpu, int cpu) {} ^ arch/x86/kvm/vmx/tdx_stubs.c:14:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void tdx_vcpu_load(struct kvm_vcpu *vcpu, int cpu) {} ^ static arch/x86/kvm/vmx/tdx_stubs.c:15:6: warning: no previous prototype for function 'tdx_vcpu_put' [-Wmissing-prototypes] void tdx_vcpu_put(struct kvm_vcpu *vcpu) {} ^ arch/x86/kvm/vmx/tdx_stubs.c:15:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void tdx_vcpu_put(struct kvm_vcpu *vcpu) {} ^ static arch/x86/kvm/vmx/tdx_stubs.c:16:6: warning: no previous prototype for function 'tdx_prepare_switch_to_guest' [-Wmissing-prototypes] void tdx_prepare_switch_to_guest(struct kvm_vcpu *vcpu) {} ^ arch/x86/kvm/vmx/tdx_stubs.c:16:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void tdx_prepare_switch_to_guest(struct kvm_vcpu *vcpu) {} ^ static void tdx_handle_exit_irqoff(struct kvm_vcpu *vcpu) {} ^ arch/x86/kvm/vmx/tdx_stubs.c:17:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void tdx_handle_exit_irqoff(struct kvm_vcpu *vcpu) {} ^ static int tdx_handle_exit(struct kvm_vcpu *vcpu, ^ arch/x86/kvm/vmx/tdx_stubs.c:18:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int tdx_handle_exit(struct kvm_vcpu *vcpu, ^ static arch/x86/kvm/vmx/tdx_stubs.c:21:6: warning: no previous prototype for function 'tdx_apicv_post_state_restore' [-Wmissing-prototypes] void tdx_apicv_post_state_restore(struct kvm_vcpu *vcpu) {} ^ arch/x86/kvm/vmx/tdx_stubs.c:21:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void tdx_apicv_post_state_restore(struct kvm_vcpu *vcpu) {} ^ static arch/x86/kvm/vmx/tdx_stubs.c:22:5: warning: no previous prototype for function 'tdx_deliver_posted_interrupt' [-Wmissing-prototypes] int tdx_deliver_posted_interrupt(struct kvm_vcpu *vcpu, int vector) { return 0; } ^ arch/x86/kvm/vmx/tdx_stubs.c:22:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int tdx_deliver_posted_interrupt(struct kvm_vcpu *vcpu, int vector) { return 0; } ^ static void tdx_get_exit_info(struct kvm_vcpu *vcpu, u32 *reason, ^ arch/x86/kvm/vmx/tdx_stubs.c:23:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void tdx_get_exit_info(struct kvm_vcpu *vcpu, u32 *reason, ^ static arch/x86/kvm/vmx/tdx_stubs.c:26:5: warning: no previous prototype for function 'tdx_dev_ioctl' [-Wmissing-prototypes] int tdx_dev_ioctl(void __user *argp) { return -EOPNOTSUPP; } ^ arch/x86/kvm/vmx/tdx_stubs.c:26:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int tdx_dev_ioctl(void __user *argp) { return -EOPNOTSUPP; } ^ static arch/x86/kvm/vmx/tdx_stubs.c:27:5: warning: no previous prototype for function 'tdx_vm_ioctl' [-Wmissing-prototypes] int tdx_vm_ioctl(struct kvm *kvm, void __user *argp) { return -EOPNOTSUPP; } ^ arch/x86/kvm/vmx/tdx_stubs.c:27:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int tdx_vm_ioctl(struct kvm *kvm, void __user *argp) { return -EOPNOTSUPP; } ^ static arch/x86/kvm/vmx/tdx_stubs.c:28:72: error: use of undeclared identifier 'ENOPNOTSUPP' int tdx_vcpu_ioctl(struct kvm_vcpu *vcpu, void __user *argp) { return -ENOPNOTSUPP; } ^ arch/x86/kvm/vmx/tdx_stubs.c:28:5: warning: no previous prototype for function 'tdx_vcpu_ioctl' [-Wmissing-prototypes] int tdx_vcpu_ioctl(struct kvm_vcpu *vcpu, void __user *argp) { return -ENOPNOTSUPP; } ^ arch/x86/kvm/vmx/tdx_stubs.c:28:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int tdx_vcpu_ioctl(struct kvm_vcpu *vcpu, void __user *argp) { return -ENOPNOTSUPP; } ^ static arch/x86/kvm/vmx/tdx_stubs.c:30:6: warning: no previous prototype for function 'tdx_flush_tlb' [-Wmissing-prototypes] void tdx_flush_tlb(struct kvm_vcpu *vcpu) {} ^ arch/x86/kvm/vmx/tdx_stubs.c:30:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void tdx_flush_tlb(struct kvm_vcpu *vcpu) {} ^ static arch/x86/kvm/vmx/tdx_stubs.c:31:6: warning: no previous prototype for function 'tdx_load_mmu_pgd' [-Wmissing-prototypes] void tdx_load_mmu_pgd(struct kvm_vcpu *vcpu, hpa_t root_hpa, int root_level) {} ^ arch/x86/kvm/vmx/tdx_stubs.c:31:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void tdx_load_mmu_pgd(struct kvm_vcpu *vcpu, hpa_t root_hpa, int root_level) {} ^ static 21 warnings and 1 error generated. vim +/tdx_handle_exit_irqoff +17 arch/x86/kvm/vmx/tdx_stubs.c 9 10 int tdx_vcpu_create(struct kvm_vcpu *vcpu) { return -EOPNOTSUPP; } 11 void tdx_vcpu_free(struct kvm_vcpu *vcpu) {} 12 void tdx_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event) {} 13 fastpath_t tdx_vcpu_run(struct kvm_vcpu *vcpu) { return EXIT_FASTPATH_NONE; } 14 void tdx_vcpu_load(struct kvm_vcpu *vcpu, int cpu) {} 15 void tdx_vcpu_put(struct kvm_vcpu *vcpu) {} 16 void tdx_prepare_switch_to_guest(struct kvm_vcpu *vcpu) {} 19 enum exit_fastpath_completion fastpath) { return 0; } 20 21 void tdx_apicv_post_state_restore(struct kvm_vcpu *vcpu) {} 22 int tdx_deliver_posted_interrupt(struct kvm_vcpu *vcpu, int vector) { return 0; } 24 u64 *info1, u64 *info2, u32 *intr_info, u32 *error_code) {} 25 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org