Re: [PATCH v6 09/17] KVM: arm64: Prepare non-protected nVHE hypervisor stacktrace

[kernel test robot <lkp@intel.com>]

Hi Kalesh,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on 82a592c13b0aeff94d84d54183dae0b26384c95f]

url:    https://github.com/intel-lab-lkp/linux/commits/Kalesh-Singh/KVM-nVHE-Hypervisor-stack-unwinder/20220726-154355
base:   82a592c13b0aeff94d84d54183dae0b26384c95f
config: arm64-buildonly-randconfig-r006-20220724 (https://download.01.org/0day-ci/archive/20220727/202207270011.GnBElFk7-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 83882606dbd7ffb0bdd3460356202d97705809c8)
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
        # install arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/adb3292a8f22d642d40a5f2f649592a1961fa7da
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Kalesh-Singh/KVM-nVHE-Hypervisor-stack-unwinder/20220726-154355
        git checkout adb3292a8f22d642d40a5f2f649592a1961fa7da
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang 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@intel.com>

All warnings (new ones prefixed by >>):

>> arch/arm64/kvm/hyp/nvhe/stacktrace.c:46:6: warning: no previous prototype for function 'kvm_nvhe_prepare_backtrace' [-Wmissing-prototypes]
   void kvm_nvhe_prepare_backtrace(unsigned long fp, unsigned long pc)
        ^
   arch/arm64/kvm/hyp/nvhe/stacktrace.c:46:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void kvm_nvhe_prepare_backtrace(unsigned long fp, unsigned long pc)
   ^
   static 
   1 warning generated.


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)

-- 
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https://01.org/lkp