@@ -770,7 +770,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
/* destroy any largepage mappings for dirty tracking */
}
- if (!npages) {
+ if (!npages || base_gfn != old.base_gfn) {
struct kvm_memory_slot *slot;
r = -ENOMEM;
@@ -786,8 +786,8 @@ int __kvm_set_memory_region(struct kvm *kvm,
old_memslots = kvm->memslots;
rcu_assign_pointer(kvm->memslots, slots);
synchronize_srcu_expedited(&kvm->srcu);
- /* From this point no new shadow pages pointing to a deleted
- * memslot will be created.
+ /* From this point no new shadow pages pointing to a deleted,
+ * or moved, memslot will be created.
*
* validation of sp->gfn happens in:
* - gfn_to_hva (kvm_read_guest, gfn_to_pfn)