SERVICING CPU DEMAND REQUESTS WITH INFLIGHT PREFETCHES

Organization Name

Inventor(s)

Ramakrishnan Venkatasubramanian of Plano TX (US)

SERVICING CPU DEMAND REQUESTS WITH INFLIGHT PREFETCHES

This abstract first appeared for US patent application 18820740 titled 'SERVICING CPU DEMAND REQUESTS WITH INFLIGHT PREFETCHES

Original Abstract Submitted

Disclosed embodiments provide a technique in which a memory controller determines whether a fetch address is a miss in an L1 cache and, when a miss occurs, allocates a way of the L1 cache, determines whether the allocated way matches a scoreboard entry of pending service requests, and, when such a match is found, determine whether a request address of the matching scoreboard entry matches the fetch address. When the matching scoreboard entry also has a request address matching the fetch address, the scoreboard entry is modified to a demand request.