公开(公告)号：US20190108138A1

公开(公告)日：2019-04-11

申请号：US16105434

申请日：2018-08-20

Applicant: Intel Corporation

Inventor： Daniel GREENSPAN ,  Blaise FANNING ,  Yoav LOSSIN ,  Asaf RUBINSTEIN

IPC: G06F12/123 ,  G06F12/0891 ,  G06F12/0897

Abstract: A method and apparatus are described for a shared LRU policy between cache levels. For example, one embodiment comprises: a level N cache to store a first plurality of entries; a level N+1 cache to store a second plurality of entries; the level N+1 cache to initially be provided with responsibility for implementing a least recently used (LRU) eviction policy for a first entry until receipt of a request for the first entry from the level N cache at which time the entry is copied from the level N+1 cache to the level N cache, the level N cache to then be provided with responsibility for implementing the LRU policy until the first entry is evicted from the level N cache, wherein upon being notified that the first entry has been evicted from the level N cache, the level N+1 cache to resume responsibility for implementing the LRU eviction policy.