公开(公告)号：US08793442B2

公开(公告)日：2014-07-29

申请号：US13368958

申请日：2012-02-08

申请人： Guy L Guthrie ,  Hien M Le ,  Jeff A Stuecheli ,  Derek E Williams

发明人： Guy L Guthrie ,  Hien M Le ,  Jeff A Stuecheli ,  Derek E Williams

IPC分类号： G06F12/00

CPC分类号： G06F12/0897 ,  G06F12/0811

摘要： A multiprocessor data processing system includes a plurality of cache memories including a cache memory. In response to the cache memory detecting a storage-modifying operation specifying a same target address as that of a first read-type operation being processed by the cache memory, the cache memory provides a retry response to the storage-modifying operation. In response to completion of the read-type operation, the cache memory enters a referee mode. While in the referee mode, the cache memory temporarily dynamically increases priority of any storage-modifying operation targeting the target address in relation to any second read-type operation targeting the target address.

摘要翻译： 多处理器数据处理系统包括包括高速缓存存储器的多个高速缓存存储器。 响应于高速缓冲存储器检测指定与由高速缓冲存储器处理的第一读取型操作相同的目标地址的存储修改操作，高速缓冲存储器为存储修改操作提供重试响应。 响应于完成读取型操作，缓存存储器进入裁判模式。 在裁判模式下，高速缓存存储器临时动态地增加针对目标地址的任何存储修改操作的优先级，这相对于针对目标地址的任何第二读取类型操作。

公开(公告)号：US08799588B2

公开(公告)日：2014-08-05

申请号：US13368987

申请日：2012-02-08

申请人： Guy L Guthrie ,  Hien M Le ,  Hugh Shen ,  Jeff A Stuecheli ,  Derek E Williams

发明人： Guy L Guthrie ,  Hien M Le ,  Hugh Shen ,  Jeff A Stuecheli ,  Derek E Williams

IPC分类号： G06F12/00

CPC分类号： G06F12/0831 ,  G06F2212/1008 ,  G06F2212/1016

摘要： A multiprocessor data processing system includes a plurality of cache memories including a cache memory. The cache memory issues a read-type operation for a target cache line. While waiting for receipt of the target cache line, the cache memory monitors to detect a competing store-type operation for the target cache line. In response to receiving the target cache line, the cache memory installs the target cache line in the cache memory, and sets a coherency state of the target cache line installed in the cache memory based on whether the competing store-type operation is detected.