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:
May. 07, 2024
Filed:
Apr. 04, 2022
International Business Machines Corporation, Armonk, NY (US);
Ashraf ElSharif, Austin, TX (US);
Richard Joseph Branciforte, Austin, TX (US);
Gregory William Alexander, Pflugerville, TX (US);
Deanna Postles Dunn Berger, Hyde Park, NY (US);
Timothy Bronson, Round Rock, TX (US);
Aaron Tsai, Hyde Park, NY (US);
Taylor J. Pritchard, Austin, TX (US);
Markus Kaltenbach, Tübingen, DE;
Christian Jacobi, West Park, NY (US);
Michael A. Blake, Wappingers Falls, NY (US);
INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US);
Abstract
A computer system includes a processor core and a memory system in signal communication with the processor core. The memory system includes a first cache and a second cache. The first cache is arranged at a first level of a hierarchy in the memory system and is configured to store a plurality of first-cache entries. The second cache is arranged at a second level of the hierarchy that is lower than the first level, and stores a plurality of second-cache entries. The first cache maintains a directory that contains information for each of the first-cache entries. The second cache maintains a shadow pointer directory (SPD) that includes one or more SPD entries that maps each of the first-cache entries to a corresponding second cache entry at a lower-level cache location.