Variable cache line size management
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United States of America Patent
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Jan 27, 2015
Grant Date -
May 2, 2013
app pub date -
Apr 20, 2012
filing date -
Nov 1, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
According to one aspect of the present disclosure, a method and technique for variable cache line size management is disclosed. The method includes: determining whether an eviction of a cache line from an upper level sectored cache to an unsectored lower level cache is to be performed, wherein the upper level cache includes a plurality of sub-sectors, each sub-sector having a cache line size corresponding to a cache line size of the lower level cache; responsive to determining that an eviction is to be performed, identifying referenced sub-sectors of the cache line to be evicted; invalidating unreferenced sub-sectors of the cache line to be evicted; and storing the referenced sub-sectors in the lower level cache.
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