linux-kernel - [intel-tdx:kvm-upstream 81/152] arch/x86/kvm/vmx/tdx_stubs.c:16:5: error: no previous prototype for 'tdx_vcpu

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Message-ID: <202112170038.Fw2cty1d-lkp@intel.com>
Date:   Fri, 17 Dec 2021 00:29:12 +0800
From:   kernel test robot <lkp@...el.com>
To:     Sean Christopherson <sean.j.christopherson@...el.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Isaku Yamahata <isaku.yamahata@...el.com>
Subject: [intel-tdx:kvm-upstream 81/152] arch/x86/kvm/vmx/tdx_stubs.c:16:5:
 error: no previous prototype for 'tdx_vcpu_ioctl'

tree:   https://github.com/intel/tdx.git kvm-upstream
head:   bdfe06c17daab60c196ff80c1d98467a1d3734fa
commit: 2a1d7e9bae19b842ad5ac81f5e0b549066b58ff7 [81/152] KVM: TDX: Do TDX specific vcpu initialization
config: i386-randconfig-m021-20211216 (https://download.01.org/0day-ci/archive/20211217/202112170038.Fw2cty1d-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/intel/tdx/commit/2a1d7e9bae19b842ad5ac81f5e0b549066b58ff7
        git remote add intel-tdx https://github.com/intel/tdx.git
        git fetch --no-tags intel-tdx kvm-upstream
        git checkout 2a1d7e9bae19b842ad5ac81f5e0b549066b58ff7
        # 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@...el.com>

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) {}
         |      ^~~~~~~~~~~~~~
   arch/x86/kvm/vmx/tdx_stubs.c:14:5: error: no previous prototype for 'tdx_dev_ioctl' [-Werror=missing-prototypes]
      14 | int tdx_dev_ioctl(void __user *argp) { return -EOPNOTSUPP; }
         |     ^~~~~~~~~~~~~
   arch/x86/kvm/vmx/tdx_stubs.c:15:5: error: no previous prototype for 'tdx_vm_ioctl' [-Werror=missing-prototypes]
      15 | int tdx_vm_ioctl(struct kvm *kvm, void __user *argp) { return -EOPNOTSUPP; }
         |     ^~~~~~~~~~~~
>> arch/x86/kvm/vmx/tdx_stubs.c:16:5: error: no previous prototype for 'tdx_vcpu_ioctl' [-Werror=missing-prototypes]
      16 | 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:16:72: error: 'ENOPNOTSUPP' undeclared (first use in this function); did you mean 'EOPNOTSUPP'?
      16 | int tdx_vcpu_ioctl(struct kvm_vcpu *vcpu, void __user *argp) { return -ENOPNOTSUPP; }
         |                                                                        ^~~~~~~~~~~
         |                                                                        EOPNOTSUPP
   arch/x86/kvm/vmx/tdx_stubs.c:16:72: note: each undeclared identifier is reported only once for each function it appears in
   arch/x86/kvm/vmx/tdx_stubs.c:16:85: error: control reaches end of non-void function [-Werror=return-type]
      16 | int tdx_vcpu_ioctl(struct kvm_vcpu *vcpu, void __user *argp) { return -ENOPNOTSUPP; }
         |                                                                                     ^
   cc1: all warnings being treated as errors


vim +/tdx_vcpu_ioctl +16 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	
    14	int tdx_dev_ioctl(void __user *argp) { return -EOPNOTSUPP; }
  > 15	int tdx_vm_ioctl(struct kvm *kvm, void __user *argp) { return -EOPNOTSUPP; }
  > 16	int tdx_vcpu_ioctl(struct kvm_vcpu *vcpu, void __user *argp) { return -ENOPNOTSUPP; }

---
0-DAY CI Kernel Test Service, Intel Corporation
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