发明名称 |
Claiming coherency ownership of a partial cache line of data |
摘要 |
According to method of data processing in a multiprocessor data processing system, in response to a processor request to modify a target granule of a target cache line of data containing multiple granules, a processing unit originates on an interconnect of the multiprocessor data processing system a data-claim-partial request that requests permission to promote only the target granule of the target cache line to a unique copy with an intent to modify the target granule. In response to a combined response to the data-claim-partial request indicating success (the combined response representing a system-wide response to the data-claim-partial-request), the processing unit promotes only the target granule of the target cache line to a unique copy by updating a coherency state of the target granule and retaining a coherency state of at least one other granule of the target cache line. |
申请公布号 |
US8255635(B2) |
申请公布日期 |
2012.08.28 |
申请号 |
US20080024392 |
申请日期 |
2008.02.01 |
申请人 |
ARIMILLI LAKSHMINARAYANA B.;ARIMILLI RAVI K.;LEWIS JERRY D.;MAULE WARREN E.;INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
ARIMILLI LAKSHMINARAYANA B.;ARIMILLI RAVI K.;LEWIS JERRY D.;MAULE WARREN E. |
分类号 |
G06F12/04 |
主分类号 |
G06F12/04 |
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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