diff --git a/arch/s390/kvm/dat.h b/arch/s390/kvm/dat.h
index 8f8278c44879..5d848e74e382 100644
--- a/arch/s390/kvm/dat.h
+++ b/arch/s390/kvm/dat.h
@@ -500,6 +500,7 @@ struct guest_fault {
 	bool write_attempt;	/* Write access attempted */
 	bool attempt_pfault;	/* Attempt a pfault first */
 	bool valid;		/* This entry contains valid data */
+	bool crste_region3;     /* Whether crstep refers to a region3 entry */
 	void (*callback)(struct guest_fault *f);
 	void *priv;
 };
diff --git a/arch/s390/kvm/gmap.c b/arch/s390/kvm/gmap.c
index 3c26e35af0ef..fe138d17caaf 100644
--- a/arch/s390/kvm/gmap.c
+++ b/arch/s390/kvm/gmap.c
@@ -531,6 +531,7 @@ static int gmap_handle_minor_crste_fault(struct gmap *gmap, struct guest_fault *
 	f->pfn = PHYS_PFN(large_crste_to_phys(oldcrste, f->gfn));
 	f->writable = oldcrste.s.fc1.w;
 
+	f->crste_region3 = is_pud(oldcrste);
 	/* Appropriate permissions already (race with another handler), nothing to do. */
 	if (!oldcrste.h.i && !(f->write_attempt && oldcrste.h.p))
 		return 0;
@@ -690,6 +691,7 @@ static int _gmap_link(struct kvm_s390_mmu_cache *mc, struct gmap *gmap, int leve
 			if (oldval.val != _CRSTE_EMPTY(oldval.h.tt).val &&
 			    crste_origin_large(oldval) != crste_origin_large(newval))
 				return -EAGAIN;
+			f->crste_region3 = is_pud(newval);
 		} while (!gmap_crstep_xchg_atomic(gmap, f->crstep, oldval, newval, f->gfn));
 		if (f->callback)
 			f->callback(f);