Controllably exiting an unknown state of a cache coherency directory
US8782347B2 · kind B2 · utility
0Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2009 |
| Grant date | Jul 15, 2014 |
| Priority date | — |
| Expiry date | Dec 9, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/1032
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a method includes receiving a read request from a first caching agent and if a directory entry associated with the request is in an unknown state, an invalidating snoop message is sent to at least one other caching agent to invalidate information in a cache location of the other caching agent corresponding to the location of the read request, to enable setting of the directory entry into a known state. Other embodiments are described and claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.