Dynamic partial blocking of a cache ECC bypass

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United States of America Patent

PATENT NO 9600361
APP PUB NO 20160147597A1
SERIAL NO

14824264

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Abstract

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An aspect includes receiving a fetch request for a data block at a cache memory system that includes cache memory that is partitioned into a plurality of cache data ways including a cache data way that contains the data block. The data block is fetched and it is determined whether the in-line ECC checking and correcting should be bypassed. The determining is based on a bypass indicator corresponding to the cache data way. Based on determining that in-line ECC checking and correcting should be bypassed, returning the fetched data block to the requestor and performing an ECC process for the fetched data block subsequent to returning the fetched data block to the requestor. Based on determining that in-line ECC checking and correcting should not be bypassed, performing the ECC process for the fetched data block and returning the fetched data block to the requestor subsequent to performing the ECC process.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fee, Michael F Cold Spring, US 41 150
Mak, Pak-kin Poughkeepsie, US 89 1213
O'Neill,, Jr Arthur J Poughkeepsie, US 36 247
Postles, Dunn Berger Deanna Hyde Park, US 4 4

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