s390: ap: kvm: Enable PQAP/AQIC facility for the guest

AP Queue Interruption Control (AQIC) facility gives
the guest the possibility to control interruption for
the Cryptographic Adjunct Processor queues.
Signed-off-by: NPierre Morel <pmorel@linux.ibm.com>
Reviewed-by: NTony Krowiak <akrowiak@linux.ibm.com>
Acked-by: NHarald Freudenberger <freude@linux.ibm.com>
Acked-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: NHalil Pasic <pasic@linux.ibm.com>
[ Modified while picking: we may not expose STFLE facility 65
unconditionally because AIV is a pre-requirement.]
Signed-off-by: NVasily Gorbik <gor@linux.ibm.com>

arch/s390/kvm/kvm-s390.c

@@ -2461,6 +2461,9 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
 		set_kvm_facility(kvm->arch.model.fac_list, 147);
 	}
 
+	if (css_general_characteristics.aiv && test_facility(65))
+		set_kvm_facility(kvm->arch.model.fac_mask, 65);
+
 	kvm->arch.model.cpuid = kvm_s390_get_initial_cpuid();
 	kvm->arch.model.ibc = sclp.ibc & 0x0fff;