Counter-based entry invalidation for metadata previous write queue
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United States of America Patent
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Dec 16, 2014
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N/A
app pub date -
Dec 10, 2013
filing date -
Jun 11, 2012
priority date (Note) -
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Abstract
Embodiments of the invention relate to counter-based entry invalidation for a metadata previous write queue (PWQ). An aspect of the invention includes writing an address into an entry in the metadata PWQ, the address being associated with an instance of metadata received from a pipeline and setting a valid tag associated with the entry in the metadata PWQ to valid. Another aspect of the invention includes initializing a counter to zero and incrementing the counter based on receiving a count signal from the pipeline until the counter is equal to a threshold. Yet another aspect of the invention includes setting the valid tag to invalid based on the counter being equal to the threshold.
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