diff -r cf1d9aa19b11 -r 850a04e8e4a1 src/cpu/o3/fetch_impl.hh
--- a/src/cpu/o3/fetch_impl.hh	Thu Jan 27 20:26:57 2011 -0600
+++ b/src/cpu/o3/fetch_impl.hh	Thu Jan 27 20:27:13 2011 -0600
@@ -604,6 +604,9 @@
     ThreadID tid = mem_req->threadId();
     Addr block_PC = mem_req->getVaddr();
 
+    // Wake up CPU if it was idle
+    cpu->wakeCPU();
+
     // If translation was successful, attempt to read the icache block.
     if (fault == NoFault) {
         // Build packet here.
@@ -654,6 +657,9 @@
         instruction->fault = fault;
         wroteToTimeBuffer = true;
 
+        DPRINTF(Activity, "Activity this cycle.\n");
+        cpu->activityThisCycle();
+
         fetchStatus[tid] = TrapPending;
 
         DPRINTF(Fetch, "[tid:%i]: Blocked, need to handle the trap.\n", tid);