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- If the line is exclusive (i.e. dirty bit is set) no message is
required
- Else send a write-request to the home
- Home sends an invalidation message down the chain
- Each copy is invalidated (other than that of the requester)
- Final node in chain acknowledges the requester and the home
- Chain is locked for the duration of the invalidation
Paul H J Kelly
Mon Dec 1 20:13:28 GMT 1997