SYSTEM AND METHOD FOR IMPROVING A VICTIM CACHE MODE IN A PORTABLE COMPUTING DEVICE

Systems and methods for improved operation of a victim cache in a portable computing device (PCD) are presented. A lower level cache is operated as a victim to an upper level cache, the lower level cache containing a plurality of cache lines. A filter is operated in association with the lower level...

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Bibliographic Details
Main Authors KHAN, Moinul, WANG, Feng, RYCHLIK, Bohuslav
Format Patent
LanguageEnglish
French
German
Published 22.11.2017
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:Systems and methods for improved operation of a victim cache in a portable computing device (PCD) are presented. A lower level cache is operated as a victim to an upper level cache, the lower level cache containing a plurality of cache lines. A filter is operated in association with the lower level victim cache, and reflects the cache lines contained in the victim cache. For a miss at the upper level cache, the filter is checked to determine if the requested cache line is in the victim cache. If checking the filter determines that the requested cache line is in the victim cache the requested cache line is retrieved from the victim cache. If checking the filter determines that the request cache line is not in the victim cache, the victim cache is bypassed and the cache line is requested from a memory controller.
Bibliography:Application Number: EP20160702611