linux-kernel - [intel-tdx:guest 2/4] arch/x86/kernel/tdx-tests.c:66:12: warning: no previous prototype for 'kvm_unit_test_debug

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Date:   Wed, 8 Dec 2021 08:00:27 +0800
From:   kernel test robot <lkp@...el.com>
To:     Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: [intel-tdx:guest 2/4] arch/x86/kernel/tdx-tests.c:66:12: warning: no
 previous prototype for 'kvm_unit_test_debug_init'

tree:   https://github.com/intel/tdx.git guest
head:   99ee592fd433c9c999684d873636c3764019dd08
commit: 857f6deb3a90f4d3a0ad94433929d017f31e2efd [2/4] x86/tdx-tests: Add a port of a kvm unit test
config: i386-buildonly-randconfig-r006-20211207 (https://download.01.org/0day-ci/archive/20211208/202112080759.vxdxKodd-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/857f6deb3a90f4d3a0ad94433929d017f31e2efd
        git remote add intel-tdx https://github.com/intel/tdx.git
        git fetch --no-tags intel-tdx guest
        git checkout 857f6deb3a90f4d3a0ad94433929d017f31e2efd
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash arch/x86/kernel/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> arch/x86/kernel/tdx-tests.c:66:12: warning: no previous prototype for 'kvm_unit_test_debug_init' [-Wmissing-prototypes]
      66 | int __init kvm_unit_test_debug_init(void)
         |            ^~~~~~~~~~~~~~~~~~~~~~~~
   arch/x86/kernel/tdx-tests.c: Assembler messages:
   arch/x86/kernel/tdx-tests.c:85: Error: bad register name `%rax'
   arch/x86/kernel/tdx-tests.c:86: Error: bad register name `%rax'
   arch/x86/kernel/tdx-tests.c:87: Error: bad register name `%rax'
   arch/x86/kernel/tdx-tests.c:88: Error: bad register name `%rax'
   arch/x86/kernel/tdx-tests.c:89: Error: bad register name `%rax'
   arch/x86/kernel/tdx-tests.c:90: Error: bad register name `%rip)'
   arch/x86/kernel/tdx-tests.c:111: Error: bad register name `%rax'
   arch/x86/kernel/tdx-tests.c:112: Error: bad register name `%rax'
   arch/x86/kernel/tdx-tests.c:113: Error: bad register name `%rax'
   arch/x86/kernel/tdx-tests.c:114: Error: bad register name `%rax'
   arch/x86/kernel/tdx-tests.c:115: Error: bad register name `%rax'
   arch/x86/kernel/tdx-tests.c:116: Error: bad register name `%rip)'
   arch/x86/kernel/tdx-tests.c:118: Error: bad register name `%rax'
   arch/x86/kernel/tdx-tests.c:133: Error: bad register name `%rax'
   arch/x86/kernel/tdx-tests.c:134: Error: bad register name `%rax'
   arch/x86/kernel/tdx-tests.c:135: Error: bad register name `%rax'
   arch/x86/kernel/tdx-tests.c:136: Error: bad register name `%rax'
   arch/x86/kernel/tdx-tests.c:137: Error: bad register name `%rax'
   arch/x86/kernel/tdx-tests.c:138: Error: bad register name `%rip)'


vim +/kvm_unit_test_debug_init +66 arch/x86/kernel/tdx-tests.c

    65	
  > 66	int __init kvm_unit_test_debug_init(void)

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org