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/include/uapi/asm/kvm.h b/arch/s390/include/uapi/asm/kvm.h
index 1d2e820..98526ac 100644
--- a/arch/s390/include/uapi/asm/kvm.h
+++ b/arch/s390/include/uapi/asm/kvm.h
@@ -101,6 +101,7 @@
 #define KVM_S390_VM_CPU_FEAT_SIEF2	1
 #define KVM_S390_VM_CPU_FEAT_64BSCAO	2
 #define KVM_S390_VM_CPU_FEAT_SIIF	3
+#define KVM_S390_VM_CPU_FEAT_GPERE	4
 struct kvm_s390_vm_cpu_feat {
 	__u64 feat[16];
 };