SYSTEMS AND METHODS FOR FASTER READ AFTER WRITE FORWARDING USING A VIRTUAL ADDRESS

摘要

Methods for read after write forwarding using a virtual address are disclosed. A method includes determining when a virtual address has been remapped from corresponding to a first physical address to a second physical address and determining if all stores occupying a store queue before the remapping have been retired from the store queue. Loads that are younger than the stores that occupied the store queue before the remapping are prevented from being dispatched and executed until the stores that occupied the store queue before the remapping have left the store queue and become globally visible.

主权项

1. A method for read-after-write forwarding using a virtual address, said method comprising:
determining if a load and a store are to a same page; and if said load and said store are to said same page, completing said load with data acquired via virtual-address-based forwarding while said load and said store are delayed for acquisition of their respective physical addresses and while the physical address of said load is cross-checked against the physical address of said store.