Re-fetching cache memory enabling alternative operational modes

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United States of America Patent

PATENT NO 7934054
SERIAL NO

11751973

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Abstract

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A re-fetching cache memory improves efficiency of a system, for example by advantageously sharing the cache memory and/or by increasing performance. When some or all of the cache memory is temporarily used for another purpose, some or all of a data portion of the cache memory is flushed, and some or all of a tag portion is saved in an archive. In some embodiments, some or all of the tag portion operates “in-place” as the archive, and in further embodiments, is placed in a reduced-power mode. When the temporary use completes, optionally and/or selectively, at least some of the tag portion is repopulated from the archive, and the data portion is re-fetched according to the repopulated tag portion. According to various embodiments, processor access to the cache is enabled during one or more of: the saving; the repopulating; and the re-fetching.

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Patent Owner(s)

Patent OwnerAddress
SUN MICROSYSTEMS INC4150 NETWORK CIRCLE SANTA CLARA CA 95054
SUN MICROSYSTEMS TECHNOLOGY LTDCEDAR HOUSE 41 CEDAR AVENUE HAMILTON HM12

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Glaskowsky, Peter N Cupertino, US 26 555
Moll, Laurent R San Jose, US 38 650
Rowlands, Joseph B Santa Clara, US 61 936

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