linux-kernel - arch/arm64/kvm/hyp/nvhe/stacktrace.c:46:6: warning: no previous prototype for 'kvm_nvhe_prepare

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Message-ID: <202212070109.GLobp1eh-lkp@intel.com>
Date:   Wed, 7 Dec 2022 01:37:15 +0800
From:   kernel test robot <lkp@...el.com>
To:     Kalesh Singh <kaleshsingh@...gle.com>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Marc Zyngier <maz@...nel.org>, Fuad Tabba <tabba@...gle.com>
Subject: arch/arm64/kvm/hyp/nvhe/stacktrace.c:46:6: warning: no previous
 prototype for 'kvm_nvhe_prepare_backtrace'

Hi Kalesh,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   bce9332220bd677d83b19d21502776ad555a0e73
commit: 879e5ac7b2e4db05799a905b5a07fc9e5dedf651 KVM: arm64: Prepare non-protected nVHE hypervisor stacktrace
date:   4 months ago
config: arm64-buildonly-randconfig-r004-20221206
compiler: aarch64-linux-gcc (GCC) 12.1.0
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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=879e5ac7b2e4db05799a905b5a07fc9e5dedf651
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 879e5ac7b2e4db05799a905b5a07fc9e5dedf651
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/

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

All warnings (new ones prefixed by >>):

>> arch/arm64/kvm/hyp/nvhe/stacktrace.c:46:6: warning: no previous prototype for 'kvm_nvhe_prepare_backtrace' [-Wmissing-prototypes]
      46 | void kvm_nvhe_prepare_backtrace(unsigned long fp, unsigned long pc)
         |      ^~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/kvm_nvhe_prepare_backtrace +46 arch/arm64/kvm/hyp/nvhe/stacktrace.c

    36	
    37	/*
    38	 * kvm_nvhe_prepare_backtrace - prepare to dump the nVHE backtrace
    39	 *
    40	 * @fp : frame pointer at which to start the unwinding.
    41	 * @pc : program counter at which to start the unwinding.
    42	 *
    43	 * Saves the information needed by the host to dump the nVHE hypervisor
    44	 * backtrace.
    45	 */
  > 46	void kvm_nvhe_prepare_backtrace(unsigned long fp, unsigned long pc)

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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