- 专利标题: Counter-based entry invalidation for metadata previous write queue
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申请号: US14101437申请日: 2013-12-10
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公开(公告)号: US08914593B2公开(公告)日: 2014-12-16
- 发明人: James J. Bonanno , Brian R. Prasky
- 申请人: International Business Machines Corporation
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Cantor Colburn LLP
- 代理商 Margaret McNamara
- 主分类号: G06F12/00
- IPC分类号: G06F12/00 ; G06F12/08 ; G06F12/12 ; G06F11/07
摘要:
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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