linux-kernel - [ammarfaizi2-block:google/android/kernel/common/android12-5.10 981/9999] arch/arm64/kvm/arm.c:1906:6: warning: no previous prototype for '_kvm_host_prot

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Date:   Thu, 27 Jan 2022 09:41:39 +0800
From:   kernel test robot <lkp@...el.com>
To:     Quentin Perret <qperret@...gle.com>
Cc:     kbuild-all@...ts.01.org, GNU/Weeb Mailing List <gwml@...weeb.org>,
        linux-kernel@...r.kernel.org
Subject: [ammarfaizi2-block:google/android/kernel/common/android12-5.10
 981/9999] arch/arm64/kvm/arm.c:1906:6: warning: no previous prototype for
 '_kvm_host_prot_finalize'

Hi Quentin,

FYI, the error/warning still remains.

tree:   https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android12-5.10
head:   b0d13db791b8774617b72c9242a7cf49f67720b2
commit: 68bd98a28aa622358c73420792329221c86fbe0c [981/9999] FROMLIST: KVM: arm64: Wrap the host with a stage 2
config: arm64-buildonly-randconfig-r006-20220126 (https://download.01.org/0day-ci/archive/20220127/202201270944.zEo8aC9v-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.2.0
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/ammarfaizi2/linux-block/commit/68bd98a28aa622358c73420792329221c86fbe0c
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android12-5.10
        git checkout 68bd98a28aa622358c73420792329221c86fbe0c
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kvm/

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/arm64/kvm/arm.c:1906:6: warning: no previous prototype for '_kvm_host_prot_finalize' [-Wmissing-prototypes]
    1906 | void _kvm_host_prot_finalize(void *discard)
         |      ^~~~~~~~~~~~~~~~~~~~~~~


vim +/_kvm_host_prot_finalize +1906 arch/arm64/kvm/arm.c

  1905	
> 1906	void _kvm_host_prot_finalize(void *discard)
  1907	{
  1908		WARN_ON(kvm_call_hyp_nvhe(__pkvm_prot_finalize));
  1909	}
  1910	

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