Fixed issue #412 The root cause was DTLB miss leads to page fault exception with concurrent I$ miss. The HPTW hits all entries in the D$ and quickly faults. However the I$ is still waiting on the main memory. The trap then interrupts the atomimicity ...

Created by: rosethompson

The simplest solution is to use CommittedF to delay Exceptions like with Interrupts. Note this cannot happen with CommittedM. If the ITLB misses and the D$ also need to fetch a from the bus an ITLB page fault exception will not trigger the trap until a few stages later.