The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 06, 2007
Filed:
Oct. 25, 2005
Stephen R. Van Doren, Northborough, MA (US);
Gregory E. Tierney, Chelmsford, MA (US);
Stephen R. Van Doren, Northborough, MA (US);
Gregory E. Tierney, Chelmsford, MA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
The invention provides a system and method for resolving ambiguous invalidate messages received by an entity of a computer system. An invalidate message is considered ambiguous when the receiving entity cannot tell whether it applies to a previously victimized memory block or to a memory block that the entity is waiting to receive. When an entity receives such an invalidate message, it stores the message in its miss address file (MAF). When the entity subsequently receives the memory block, the entity 'replays' the Invalidate message from its MAF by invalidating the block from its cache and issuing an Acknowledgement (Ack) to the entity that triggered issuance of the Invalidate message command.