diff -r 6ad31a719226 -r 66e3e6e7f66a src/python/m5/SimObject.py
--- a/src/python/m5/SimObject.py	Thu Dec 06 22:11:54 2012 -0600
+++ b/src/python/m5/SimObject.py	Thu Dec 06 22:12:03 2012 -0600
@@ -872,13 +872,20 @@
         all = {}
         # search children
         for child in self._children.itervalues():
-            if isinstance(child, ptype) and not isproxy(child) and \
-               not isNullPointer(child):
-                all[child] = True
-            if isSimObject(child):
-                # also add results from the child itself
-                child_all, done = child.find_all(ptype)
-                all.update(dict(zip(child_all, [done] * len(child_all))))
+            # a child could be a list, so ensure we visit each item
+            if isinstance(child, list):
+                children = child
+            else:
+                children = [child]
+
+            for child in children:
+                if isinstance(child, ptype) and not isproxy(child) and \
+                        not isNullPointer(child):
+                    all[child] = True
+                if isSimObject(child):
+                    # also add results from the child itself
+                    child_all, done = child.find_all(ptype)
+                    all.update(dict(zip(child_all, [done] * len(child_all))))
         # search param space
         for pname,pdesc in self._params.iteritems():
             if issubclass(pdesc.ptype, ptype):