KVM: s390: vsie: support guest-PER-enhancement

We can easily forward the guest-PER-enhancement facility to guest 2 if
available.

Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index d735612..1757528 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -269,6 +269,8 @@
 		allow_cpu_feat(KVM_S390_VM_CPU_FEAT_64BSCAO);
 	if (sclp.has_siif)
 		allow_cpu_feat(KVM_S390_VM_CPU_FEAT_SIIF);
+	if (sclp.has_gpere)
+		allow_cpu_feat(KVM_S390_VM_CPU_FEAT_GPERE);
 }
 
 int kvm_arch_init(void *opaque)