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Cache memory, processing unit, data processing system and method for filtering snooped operations
Cache memory, processing unit, data processing system and method for filtering snooped operations
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机译:高速缓冲存储器,处理单元,数据处理系统和用于过滤侦听操作的方法
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摘要
A cache coherent data processing system includes at least a first cache memory supporting a first processing unit and a second cache memory supporting a second processing unit. The first cache memory includes a cache array and a cache directory of contents of the cache array. In response to the first cache memory detecting on an interconnect a broadcast operation that specifies a request address, the first cache memory determines from the operation a type of the operation and a coherency state associated with the request address. In response to determining the type and the coherency state, the first cache memory filters out the broadcast operation without accessing the cache directory.
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