Conflict resolution of cache store and fetch requests

摘要

According to an embodiment, a computer system for cache management includes a processor and a cache, the computer system configured to perform a method including receiving a first store request for a first address in the cache and receiving a first fetch request for the first address in the cache. The method also includes executing the first store request and the first fetch request, latching the first store request in a store write-back pipeline in the cache, detecting, in the processor, a conflict following execution of the first store request and the first fetch request and receiving the first store request from a recycle path including the store write-back pipeline and executing the first store request a second time.

主权项

1. A method for prioritizing cache requests, the method comprising:
receiving a first store request for a first address in the cache; receiving a first fetch request for the first address in the cache; executing the first store request and the first fetch request; latching the first store request in a store write-back pipeline in the cache; detecting, in the processor, a conflict following execution of the first store request and the first fetch request; performing until one of:
a number of iterations of the performing reaches a conflict threshold anda conflict does not occur while executing the first store request:
receiving an other fetch request; andreceiving the first store request from a recycle path including the store write-back pipeline and executing the first store request along with the other fetch request; and in response to the number of iterations of the performing reaching the conflict threshold, executing the first store request.