KVM: s390: register flic ops dynamically

Using the new kvm_register_device_ops() interface makes us get rid of
an #ifdef in common code.

Cc: Gleb Natapov <gleb@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/s390/kvm/kvm-s390.c

@@ -122,7 +122,8 @@ void kvm_arch_hardware_unsetup(void)
 
 int kvm_arch_init(void *opaque)
 {
-	return 0;
+	/* Register floating interrupt controller interface. */
+	return kvm_register_device_ops(&kvm_flic_ops, KVM_DEV_TYPE_FLIC);
 }
 
 /* Section: device related */

arch/s390/kvm/kvm-s390.h

@@ -227,6 +227,7 @@ int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
 int psw_extint_disabled(struct kvm_vcpu *vcpu);
 void kvm_s390_destroy_adapters(struct kvm *kvm);
 int kvm_s390_si_ext_call_pending(struct kvm_vcpu *vcpu);
+extern struct kvm_device_ops kvm_flic_ops;
 
 /* implemented in guestdbg.c */
 void kvm_s390_backup_guest_per_regs(struct kvm_vcpu *vcpu);

include/linux/kvm_host.h

@@ -1069,7 +1069,6 @@ int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type);
 extern struct kvm_device_ops kvm_mpic_ops;
 extern struct kvm_device_ops kvm_xics_ops;
 extern struct kvm_device_ops kvm_vfio_ops;
-extern struct kvm_device_ops kvm_flic_ops;
 
 #ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT
 

virt/kvm/kvm_main.c

@@ -2285,10 +2285,6 @@ static struct kvm_device_ops *kvm_device_ops_table[KVM_DEV_TYPE_MAX] = {
 #ifdef CONFIG_KVM_VFIO
 	[KVM_DEV_TYPE_VFIO]		= &kvm_vfio_ops,
 #endif
-
-#ifdef CONFIG_S390
-	[KVM_DEV_TYPE_FLIC]		= &kvm_flic_ops,
-#endif
 };
 
 int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type)