After loading, cache fencing is conducted to prevent the cache from flushing {HEAD ~ the contents} or replacing the contents of {TAIL ~ any cache line} 
After loading , cache fencing is conducted to prevent the cache from flushing { HEAD ~ the contents } or replacing the contents of { TAIL ~ any cache line }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL