KVM: selftests: Wrap vcpu_nested_state_get/set functions with x86 guard

struct kvm_nested_state is only available on x86 so far. To be able
to compile the code on other architectures as well, we need to wrap
the related code with #ifdefs.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

tools/testing/selftests/kvm/include/kvm_util.h

@@ -118,10 +118,12 @@ void vcpu_events_get(struct kvm_vm *vm, uint32_t vcpuid,
 		     struct kvm_vcpu_events *events);
 void vcpu_events_set(struct kvm_vm *vm, uint32_t vcpuid,
 		     struct kvm_vcpu_events *events);
+#ifdef __x86_64__
 void vcpu_nested_state_get(struct kvm_vm *vm, uint32_t vcpuid,
 			   struct kvm_nested_state *state);
 int vcpu_nested_state_set(struct kvm_vm *vm, uint32_t vcpuid,
 			  struct kvm_nested_state *state, bool ignore_error);
+#endif
 
 const char *exit_reason_str(unsigned int exit_reason);
 

tools/testing/selftests/kvm/lib/kvm_util.c

@@ -1248,6 +1248,7 @@ void vcpu_events_set(struct kvm_vm *vm, uint32_t vcpuid,
 		ret, errno);
 }
 
+#ifdef __x86_64__
 void vcpu_nested_state_get(struct kvm_vm *vm, uint32_t vcpuid,
 			   struct kvm_nested_state *state)
 {
@@ -1279,6 +1280,7 @@ int vcpu_nested_state_set(struct kvm_vm *vm, uint32_t vcpuid,
 
 	return ret;
 }
+#endif
 
 /*
  * VM VCPU System Regs Get