Retrieval of previously accessed data in a multi-core processor
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United States of America Patent
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Sep 29, 2015
Grant Date -
Jul 31, 2014
app pub date -
Dec 28, 2011
filing date -
Dec 28, 2011
priority date (Note) -
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Abstract
A multi-core processing apparatus may provide a cache probe and data retrieval method. The method may comprise sending a memory request from a requester to a record keeping structure. The memory request may have a memory address of a memory that stores requested data. The method may further comprise determining a last accessor of the memory address, sending a cache probe to the last accessor, determining the last accessor no longer has a copy of the line; and sending a request for the previously accessed version of the line. The request may bypass the tag-directories and obtain the requested data from memory.
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