[linuxppc:merge-test 6/19] arch/powerpc/kvm/powerpc.c:262:19: error: dereferencing pointer to incomplete type 'struct kvmppc_vcore'

tree:   https://github.com/linuxppc/linux merge-test
head:   f5ee8a918bf98d0bb46b91ffbb4283a64f17c3fd
commit: a7452640914469676b5fcffee80ee045525bddb8 [6/19] KVM: PPC: Book3S HV: Validate arch_compat against host compatibility mode
config: powerpc64-randconfig-002-20260803 (https://download.01.org/0day-ci/archive/20260803/[email protected]/config)
compiler: powerpc64-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260803/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All errors (new ones prefixed by >>):

   arch/powerpc/kvm/powerpc.c: In function 'kvmppc_sanity_check':
>> arch/powerpc/kvm/powerpc.c:262:19: error: dereferencing pointer to incomplete type 'struct kvmppc_vcore'
      vcpu->arch.vcore->arch_compat == PVR_ARCH_INVALID)
                      ^~


vim +262 arch/powerpc/kvm/powerpc.c

   252	
   253	int kvmppc_sanity_check(struct kvm_vcpu *vcpu)
   254	{
   255		int r = false;
   256	
   257		/* We have to know what CPU to virtualize */
   258		if (!vcpu->arch.pvr)
   259			goto out;
   260	
   261		if (vcpu->arch.vcore &&
 > 262			vcpu->arch.vcore->arch_compat == PVR_ARCH_INVALID)
   263			goto out;
   264	
   265		/* PAPR only works with book3s_64 */
   266		if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled)
   267			goto out;
   268	
   269		/* HV KVM can only do PAPR mode for now */
   270		if (!vcpu->arch.papr_enabled && is_kvmppc_hv_enabled(vcpu->kvm))
   271			goto out;
   272	

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