O3: Mark fetch stage as active if it faults.

Otherwise if the rest of the pipeline is idle then
fault will never propagate to commit to be handled,
causing CPU to deadlock.

diff --git a/src/cpu/o3/fetch_impl.hh b/src/cpu/o3/fetch_impl.hh
index 5c6e287dcb421657625ad234ad258d4fd724b9ad..e6815ef8aa6085b81d080d46674bfd2ffdf945fb 100644 (file)
--- a/src/cpu/o3/fetch_impl.hh
+++ b/src/cpu/o3/fetch_impl.hh
@@ -1264,6 +1264,8 @@ DefaultFetch<Impl>::fetch(bool &status_change)
         toDecode->insts[numInst] = instruction;
         toDecode->size++;
 
+        wroteToTimeBuffer = true;
+
         DPRINTF(Fetch, "[tid:%i]: Blocked, need to handle the trap.\n",tid);
 
         fetchStatus[tid] = TrapPending;