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:
Jul. 30, 2013
Filed:
Dec. 16, 2008
Guy L. Guthrie, Austin, TX (US);
Alvan W. NG, Austin, TN (US);
Michael S. Siegel, Raleigh, NC (US);
William J. Starke, Round Rock, TX (US);
Derek E. Williams, Austin, TX (US);
Phillip G. Williams, Leander, TX (US);
Guy L. Guthrie, Austin, TX (US);
Alvan W. Ng, Austin, TN (US);
Michael S. Siegel, Raleigh, NC (US);
William J. Starke, Round Rock, TX (US);
Derek E. Williams, Austin, TX (US);
Phillip G. Williams, Leander, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A victim cache memory includes a cache array, a cache directory of contents of the cache array, and a cache controller that controls operation of the victim cache memory. The cache controller, responsive to receiving a castout command identifying a victim cache line castout from another cache memory, causes the victim cache line to be held in the cache array. If the other cache memory is a higher level cache in the cache hierarchy of the processor core, the cache controller marks the victim cache line in the cache directory so that it is less likely to be evicted by a replacement policy of the victim cache, and otherwise, marks the victim cache line in the cache directory so that it is more likely to be evicted by the replacement policy of the victim cache.