[android-common:android16-6.12 12/12] arch/arm64/kvm/pkvm.c:756:5: warning: no previous prototype for 'pkvm_enable_smc_forwarding'

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

Hi Nikita,

FYI, the error/warning still remains.

tree:   https://android.googlesource.com/kernel/common android16-6.12
head:   1a1783c017b188c47740a5de7ffa05a4b75a2f09
commit: 128144da229a1de12ebe5bca87f607aa348c6ba9 [12/12] ANDROID: KVM: arm64: Add smc64 trap handling for protected guests
config: arm64-defconfig (https://download.01.org/0day-ci/archive/20260717/202607171934.slvzMeUv-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260717/202607171934.slvzMeUv-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202607171934.slvzMeUv-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/arm64/kvm/pkvm.c:756:5: warning: no previous prototype for 'pkvm_enable_smc_forwarding' [-Wmissing-prototypes]
     756 | int pkvm_enable_smc_forwarding(struct file *kvm_file)
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/pkvm_enable_smc_forwarding +756 arch/arm64/kvm/pkvm.c

   755	
 > 756	int pkvm_enable_smc_forwarding(struct file *kvm_file)
   757	{
   758		struct kvm *host_kvm;
   759	
   760		if (!file_is_kvm(kvm_file))
   761			return -EINVAL;
   762	
   763		if (!kvm_get_kvm_safe(kvm_file->private_data))
   764			return -EINVAL;
   765	
   766		host_kvm = kvm_file->private_data;
   767		if (!host_kvm)
   768			return -EINVAL;
   769	
   770		host_kvm->arch.pkvm.smc_forwarded = true;
   771	
   772		return 0;
   773	}
   774	

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https://github.com/intel/lkp-tests/wiki