Merge tag 'kvm-s390-next-4.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux

KVM: s390: Fixes and features for 4.14

- merge of topic branch tlb-flushing from the s390 tree to get the
  no-dat base features
- merge of kvm/master to avoid conflicts with additional sthyi fixes
- wire up the no-dat enhancements in KVM
- multiple epoch facility (z14 feature)
- Configuration z/Architecture Mode
- more sthyi fixes
- gdb server range checking fix
- small code cleanups

1 files changed, 11 insertions, 5 deletions

diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c
index 715c19c45d9a..fbe46dd0e55d 100644
--- a/arch/s390/kvm/vsie.c
+++ b/arch/s390/kvm/vsie.c
@@ -349,6 +349,9 @@ static int shadow_scb(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
 		scb_s->eca |= scb_o->eca & ECA_IB;
 	if (test_kvm_cpu_feat(vcpu->kvm, KVM_S390_VM_CPU_FEAT_CEI))
 		scb_s->eca |= scb_o->eca & ECA_CEI;
+	/* Epoch Extension */
+	if (test_kvm_facility(vcpu->kvm, 139))
+		scb_s->ecd |= scb_o->ecd & ECD_MEF;
 
 	prepare_ibc(vcpu, vsie_page);
 	rc = shadow_crycb(vcpu, vsie_page);
@@ -806,8 +809,6 @@ static int do_vsie_run(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
 {
 	struct kvm_s390_sie_block *scb_s = &vsie_page->scb_s;
 	struct kvm_s390_sie_block *scb_o = vsie_page->scb_o;
-	struct mcck_volatile_info *mcck_info;
-	struct sie_page *sie_page;
 	int rc;
 
 	handle_last_fault(vcpu, vsie_page);
@@ -831,9 +832,7 @@ static int do_vsie_run(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
 
 	if (rc == -EINTR) {
 		VCPU_EVENT(vcpu, 3, "%s", "machine check");
-		sie_page = container_of(scb_s, struct sie_page, sie_block);
-		mcck_info = &sie_page->mcck_info;
-		kvm_s390_reinject_machine_check(vcpu, mcck_info);
+		kvm_s390_reinject_machine_check(vcpu, &vsie_page->mcck_info);
 		return 0;
 	}
 
@@ -919,6 +918,13 @@ static void register_shadow_scb(struct kvm_vcpu *vcpu,
 	 */
 	preempt_disable();
 	scb_s->epoch += vcpu->kvm->arch.epoch;
+
+	if (scb_s->ecd & ECD_MEF) {
+		scb_s->epdx += vcpu->kvm->arch.epdx;
+		if (scb_s->epoch < vcpu->kvm->arch.epoch)
+			scb_s->epdx += 1;
+	}
+
 	preempt_enable();
 }