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Apparatus, system, integrated circuit die, and method to determine when to bypass a second level cache when evicting modified data from a first level cache
Apparatus, system, integrated circuit die, and method to determine when to bypass a second level cache when evicting modified data from a first level cache
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机译:从第一级高速缓存中撤出修改的数据时确定何时绕过第二级高速缓存的设备,系统,集成电路芯片和方法
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摘要
Provided are an apparatus, system, integrated circuit die, and method for caching data in a hierarchy of caches. A first cache line in a first level cache having modified data for an address is processed. Each cache line of cache lines in the first level cache store data for one of a plurality of addresses stored in multiple cache lines of a second level cache. A second cache line in the second level cache is selected and a determination is made of a number of corresponding bits in the first cache line and the second cache line that are different. Bits in the first cache line that are different from the corresponding bits in the second cache line are written to the corresponding bits in the second cache line in response to a determination that the number of corresponding bits that are different is less than a threshold.
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