tree: https://github.com/intel/tdx.git kvm-upstream head: bdfe06c17daab60c196ff80c1d98467a1d3734fa commit: 4dce28ae6facd2c06b513bc1e6fa48e397438a3a [107/152] KVM: TDX: Implement TDX vcpu enter/exit path config: i386-randconfig-m021-20211216 (https://download.01.org/0day-ci/archive/20211217/202112170303.LkHc5A7j-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/intel/tdx/commit/4dce28ae6facd2c06b513bc1e6fa48e397438a3a git remote add intel-tdx https://github.com/intel/tdx.git git fetch --no-tags intel-tdx kvm-upstream git checkout 4dce28ae6facd2c06b513bc1e6fa48e397438a3a # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): arch/x86/kvm/vmx/tdx_stubs.c:4:13: error: no previous prototype for 'tdx_pre_kvm_init' [-Werror=missing-prototypes] 4 | void __init tdx_pre_kvm_init(unsigned int *vcpu_size, | ^~~~~~~~~~~~~~~~ arch/x86/kvm/vmx/tdx_stubs.c:6:12: error: no previous prototype for 'tdx_hardware_setup' [-Werror=missing-prototypes] 6 | int __init tdx_hardware_setup(struct kvm_x86_ops *x86_ops) { return -EOPNOTSUPP; } | ^~~~~~~~~~~~~~~~~~ arch/x86/kvm/vmx/tdx_stubs.c:7:6: error: no previous prototype for 'tdx_hardware_enable' [-Werror=missing-prototypes] 7 | void tdx_hardware_enable(void) {} | ^~~~~~~~~~~~~~~~~~~ arch/x86/kvm/vmx/tdx_stubs.c:8:6: error: no previous prototype for 'tdx_hardware_disable' [-Werror=missing-prototypes] 8 | void tdx_hardware_disable(void) {} | ^~~~~~~~~~~~~~~~~~~~ arch/x86/kvm/vmx/tdx_stubs.c:10:5: error: no previous prototype for 'tdx_vcpu_create' [-Werror=missing-prototypes] 10 | int tdx_vcpu_create(struct kvm_vcpu *vcpu) { return -EOPNOTSUPP; } | ^~~~~~~~~~~~~~~ arch/x86/kvm/vmx/tdx_stubs.c:11:6: error: no previous prototype for 'tdx_vcpu_free' [-Werror=missing-prototypes] 11 | void tdx_vcpu_free(struct kvm_vcpu *vcpu) {} | ^~~~~~~~~~~~~ arch/x86/kvm/vmx/tdx_stubs.c:12:6: error: no previous prototype for 'tdx_vcpu_reset' [-Werror=missing-prototypes] 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) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/kvm/vmx/tdx_stubs.c:18:5: error: no previous prototype for 'tdx_dev_ioctl' [-Werror=missing-prototypes] 18 | int tdx_dev_ioctl(void __user *argp) { return -EOPNOTSUPP; } | ^~~~~~~~~~~~~ arch/x86/kvm/vmx/tdx_stubs.c:19:5: error: no previous prototype for 'tdx_vm_ioctl' [-Werror=missing-prototypes] 19 | int tdx_vm_ioctl(struct kvm *kvm, void __user *argp) { return -EOPNOTSUPP; } | ^~~~~~~~~~~~ arch/x86/kvm/vmx/tdx_stubs.c:20:5: error: no previous prototype for 'tdx_vcpu_ioctl' [-Werror=missing-prototypes] 20 | int tdx_vcpu_ioctl(struct kvm_vcpu *vcpu, void __user *argp) { return -ENOPNOTSUPP; } | ^~~~~~~~~~~~~~ arch/x86/kvm/vmx/tdx_stubs.c: In function 'tdx_vcpu_ioctl': arch/x86/kvm/vmx/tdx_stubs.c:20:72: error: 'ENOPNOTSUPP' undeclared (first use in this function); did you mean 'EOPNOTSUPP'? 20 | int tdx_vcpu_ioctl(struct kvm_vcpu *vcpu, void __user *argp) { return -ENOPNOTSUPP; } | ^~~~~~~~~~~ | EOPNOTSUPP arch/x86/kvm/vmx/tdx_stubs.c:20:72: note: each undeclared identifier is reported only once for each function it appears in arch/x86/kvm/vmx/tdx_stubs.c: At top level: arch/x86/kvm/vmx/tdx_stubs.c:22:6: error: no previous prototype for 'tdx_flush_tlb' [-Werror=missing-prototypes] 22 | void tdx_flush_tlb(struct kvm_vcpu *vcpu) {} | ^~~~~~~~~~~~~ arch/x86/kvm/vmx/tdx_stubs.c:23:6: error: no previous prototype for 'tdx_load_mmu_pgd' [-Werror=missing-prototypes] 23 | void tdx_load_mmu_pgd(struct kvm_vcpu *vcpu, hpa_t root_hpa, int root_level) {} | ^~~~~~~~~~~~~~~~ arch/x86/kvm/vmx/tdx_stubs.c: In function 'tdx_vcpu_ioctl': arch/x86/kvm/vmx/tdx_stubs.c:20:85: error: control reaches end of non-void function [-Werror=return-type] 20 | int tdx_vcpu_ioctl(struct kvm_vcpu *vcpu, void __user *argp) { return -ENOPNOTSUPP; } | ^ cc1: all warnings being treated as errors vim +/tdx_vcpu_run +13 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) {} 17 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org