diff -r 3fe158f47f58 -r cb5f6c1e0dfc src/sim/root.hh
--- a/src/sim/root.hh	Sun Jan 30 22:08:48 2011 -0800
+++ b/src/sim/root.hh	Sun Jan 30 22:10:33 2011 -0800
@@ -96,6 +96,9 @@
     void timeSyncSpinThreshold(Time newThreshold);
 
     Root(RootParams *p);
+
+    void serialize(std::ostream &os);
+    void unserialize(Checkpoint *cp, const std::string &section);
 };
 
 #endif // __SIM_ROOT_HH__
diff -r 3fe158f47f58 -r cb5f6c1e0dfc src/sim/root.cc
--- a/src/sim/root.cc	Sun Jan 30 22:08:48 2011 -0800
+++ b/src/sim/root.cc	Sun Jan 30 22:10:33 2011 -0800
@@ -33,6 +33,9 @@
 
 #include "base/misc.hh"
 #include "sim/root.hh"
+#include "sim/serialize.hh"
+
+using namespace std;
 
 Root *Root::_root = NULL;
 
@@ -111,6 +114,27 @@
     timeSyncEnable(p->time_sync_enable);
 }
 
+void
+Root::serialize(ostream &os)
+{
+    _period.serialize("timeSyncPeriod", os);
+    SERIALIZE_SCALAR(_periodTick);
+    _spinThreshold.serialize("timeSyncSpinThreshold", os);
+    paramOut(os, "timeSyncEnable", _enabled ? 1 : 0);
+}
+
+void
+Root::unserialize(Checkpoint *cp, const string &section)
+{
+    timeSyncEnable(false);
+    _period.unserialize("timeSyncPeriod", cp, section);
+    UNSERIALIZE_SCALAR(_periodTick);
+    _spinThreshold.unserialize("timeSyncSpinThreshold", cp, section);
+    int enabled;
+    paramIn(cp, section, "timeSyncEnable", enabled);
+    timeSyncEnable(enabled);
+}
+
 Root *
 RootParams::create()
 {