diff --git a/nova/objects/instance_numa.py b/nova/objects/instance_numa.py
index 61c35e2a6e33..b497f4ae9973 100644
--- a/nova/objects/instance_numa.py
+++ b/nova/objects/instance_numa.py
@@ -295,6 +295,12 @@ class InstanceNUMATopology(base.NovaObject,
             cell.cpu_pinning.values() for cell in self.cells
             if cell.cpu_pinning]))
 
+    @property
+    def cpuset_reserved(self):
+        return set(itertools.chain.from_iterable([
+            cell.cpuset_reserved for cell in self.cells
+            if cell.cpuset_reserved]))
+
     def clear_host_pinning(self):
         """Clear any data related to how instance is pinned to the host.
 
diff --git a/nova/tests/unit/objects/test_instance_numa.py b/nova/tests/unit/objects/test_instance_numa.py
index 0d3bd0dba059..5a4c6da1cffe 100644
--- a/nova/tests/unit/objects/test_instance_numa.py
+++ b/nova/tests/unit/objects/test_instance_numa.py
@@ -29,10 +29,12 @@ fake_obj_numa_topology = objects.InstanceNUMATopology(
     instance_uuid=fake_instance_uuid,
     cells=[
         objects.InstanceNUMACell(
-            id=0, cpuset=set(), pcpuset=set([1, 2]), memory=512,
+            id=0, cpuset=set(), pcpuset=set([1, 2]),
+            cpuset_reserved=set([5, 6]), memory=512,
             pagesize=2048),
         objects.InstanceNUMACell(
-            id=1, cpuset=set(), pcpuset=set([3, 4]), memory=512,
+            id=1, cpuset=set(), pcpuset=set([3, 4]),
+            cpuset_reserved=set([7, 8]), memory=512,
             pagesize=2048),
     ])
 
@@ -155,6 +157,10 @@ class _TestInstanceNUMACell(object):
         topo_obj.cells[1].pin_vcpus((3, 0), (4, 1))
         self.assertEqual(set([0, 1, 10, 11]), topo_obj.cpu_pinning)
 
+    def test_cpuset_reserved(self):
+        topo_obj = get_fake_obj_numa_topology(self.context)
+        self.assertEqual(set([5, 6, 7, 8]), topo_obj.cpuset_reserved)
+
     def test_clear_host_pinning(self):
         topo_obj = get_fake_obj_numa_topology(self.context)
         topo_obj.cells[0].pin_vcpus((1, 10), (2, 11))