发明名称 |
Lateral Castout (LCO) Of Victim Cache Line In Data-Invalid State |
摘要 |
A victim cache line having a data-invalid coherence state is selected for castout from a first lower level cache of a first processing unit. The first processing unit issues on an interconnect fabric a lateral castout (LCO) command identifying the victim cache line to be castout from the first lower level cache, indicating the data-invalid coherence state, and indicating that a lower level cache is an intended destination of the victim cache line. In response to a coherence response to the LCO command indicating success of the LCO command, the victim cache line is removed from the first lower level cache and held in a second lower level cache of a second processing unit in the data-invalid coherence state.
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申请公布号 |
US2010235584(A1) |
申请公布日期 |
2010.09.16 |
申请号 |
US20090402025 |
申请日期 |
2009.03.11 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
GUTHRIE GUY L.;LE HIEN M.;NG ALVAN W.;SIEGEL MICHAEL S.;WILLIAMS DEREK E.;WILLIAMS PHILLIP G. |
分类号 |
G06F12/08;G06F12/00 |
主分类号 |
G06F12/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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