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:
Aug. 24, 2010
Filed:
Jan. 09, 2003
Ravi Kumar Arimilli, Austin, TX (US);
Robert Alan Cargnoni, Austin, TX (US);
Guy Lynn Guthrie, Austin, TX (US);
William John Starke, Round Rock, TX (US);
Ravi Kumar Arimilli, Austin, TX (US);
Robert Alan Cargnoni, Austin, TX (US);
Guy Lynn Guthrie, Austin, TX (US);
William John Starke, Round Rock, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A processing unit includes a processor core, an input/output (I/O) communication adapter coupled to the processor core, and a cache system coupled to the processor core and to the I/O communication adapter. The cache system including a cache array, a cache directory and a cache controller. The cache controller snoops I/O communication by the I/O communication adapter and, in response to snooping the I/O communication adapter performing an I/O data write of outgoing data in an exclusive state, invalidates corresponding data stored within the cache array.