[openeuler:OLK-6.6 2667/2667] arch/arm64/kvm/arm.c:569:5: warning: no previous prototype for 'kvm_arch_rec_init'

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

tree:   https://gitee.com/openeuler/kernel.git OLK-6.6
head:   a5185c1b0fd7a9b3ea9b6923d5bcedc7392c59b7
commit: fa36fa3469d2461c1887e823371059401941ae8a [2667/2667] CCA: Fix cca kabi conflict
config: arm64-defconfig (https://download.01.org/0day-ci/archive/20250812/202508120550.HjIMCdCV-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250812/202508120550.HjIMCdCV-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/202508120550.HjIMCdCV-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/arm64/kvm/arm.c:569:5: warning: no previous prototype for 'kvm_arch_rec_init' [-Wmissing-prototypes]
     569 | int kvm_arch_rec_init(struct kvm_vcpu_arch *vcpu_arch)
         |     ^~~~~~~~~~~~~~~~~
   In file included from arch/arm64/kvm/arm.c:52:
   arch/arm64/kvm/hisilicon/hisi_virt.h:116:13: warning: 'hisi_ipiv_enable_per_vm' defined but not used [-Wunused-function]
     116 | static void hisi_ipiv_enable_per_vm(struct kvm_vcpu *vcpu) {}
         |             ^~~~~~~~~~~~~~~~~~~~~~~
   arch/arm64/kvm/hisilicon/hisi_virt.h:112:13: warning: 'hisi_ipiv_supported_per_vm' defined but not used [-Wunused-function]
     112 | static bool hisi_ipiv_supported_per_vm(struct kvm_vcpu *vcpu)
         |             ^~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/kvm_arch_rec_init +569 arch/arm64/kvm/arm.c

   568	
 > 569	int kvm_arch_rec_init(struct kvm_vcpu_arch *vcpu_arch)
   570	{
   571		struct realm_rec *rec;
   572	
   573		rec = kzalloc(sizeof(struct realm_rec), GFP_KERNEL_ACCOUNT);
   574		if (!rec)
   575			return -ENOMEM;
   576		rec->mpidr = INVALID_HWID;
   577		vcpu_arch->rec = rec;
   578		return 0;
   579	}
   580	

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