发明名称 |
TECHNIQUES FOR PRESERVING AN INVALID GLOBAL DOMAIN INDICATION WHEN INSTALLING A SHARED CACHE LINE IN A CACHE |
摘要 |
A technique for operating a memory system for a node includes interrogating, by a cache, an associated cache directory to determine whether a shared cache line to be installed in the cache is associated with an invalid global state in the cache. The invalid global state specifies that a version of the shared cache line has been intervened off-node. In response to the shared cache line being in the invalid global state the cache spawns a castout invalid global command for the shared cache line. The shared cache line is installed in the cache. A coherence state for the shared cache line is updated in the associated cache directory to indicate the shared cache line is shared. |
申请公布号 |
US2015363317(A1) |
申请公布日期 |
2015.12.17 |
申请号 |
US201414306661 |
申请日期 |
2014.06.17 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
GUTHRIE GUY L.;LE HIEN MINH;STUECHELI JEFFREY A.;WILLIAMS PHILLIP G. |
分类号 |
G06F12/08 |
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 |
Armonk NY US |