KVM: s390: vsie: support host-protection-interruption

Introduced with ESOP, therefore available for the guest if it
is allowed to use ESOP.

Acked-by: Christian Borntraeger <[email protected]>
Signed-off-by: David Hildenbrand <[email protected]>
Signed-off-by: Christian Borntraeger <[email protected]>

Author: David Hildenbrand

arch/s390/kvm/vsie.c

@@ -240,6 +240,9 @@ static int shadow_scb(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
 
 	/* MVPG and Protection Exception Interpretation are always available */
 	scb_s->eca |= scb_o->eca & 0x01002000U;
+	/* Host-protection-interruption introduced with ESOP */
+	if (test_kvm_cpu_feat(vcpu->kvm, KVM_S390_VM_CPU_FEAT_ESOP))
+		scb_s->ecb |= scb_o->ecb & 0x02U;
 
 	prepare_ibc(vcpu, vsie_page);
 out: