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:
Nov. 27, 2007
Filed:
Jul. 22, 2004
Brian David Barrick, Pflugerville, TX (US);
Dwain Alan Hicks, Pflugerville, TX (US);
Takeki Osanai, Austin, TX (US);
Brian David Barrick, Pflugerville, TX (US);
Dwain Alan Hicks, Pflugerville, TX (US);
Takeki Osanai, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The present invention provides a method of updating the cache state information for store transactions in an system in which store transactions only read the cache state information upon entering the unit pipe or store portion of the store/load queue. In this invention, store transactions in the unit pipe and queue are checked whenever a cache line is modified, and their cache state information updated as necessary. When the modification is an invalidate, the check tests that the two share the same physical addressable location. When the modification is a validate, the check tests that the two involve the same data cache line.