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:
Sep. 23, 2025
Filed:
Feb. 14, 2023
Arm Limited, Cambridge, GB;
Wenxuan Zhang, Austin, TX (US);
Jamshed Jalal, Austin, TX (US);
Mark David Werkheiser, Austin, TX (US);
Sakshi Verma, Austin, TX (US);
Ritukar Khanna, Austin, TX (US);
Devi Sravanthi Yalamarthy, Austin, TX (US);
Gurunath Ramagiri, Austin, TX (US);
Mukesh Patel, Round Rock, TX (US);
Tushar P Ringe, Austin, TX (US);
Arm Limited, Cambridge, GB;
Abstract
A super home node of a first chip of a multi-chip data processing system manages coherence for both local and remote cache lines accessed by local caching agents and local cache lines accessed by caching agents of one or more second chips. Both local and remote cache lines are stored in a shared cache, and requests are stored in shared point-of-coherency queue. An entry in a snoop filter table of the super home node includes a presence vector that indicates the presence of a remote cache line at specific caching agents of the first chip or the presence of a local cache line at specific caching agents of the first chip and any caching agent of the second chip. All caching agents of the second chip are represented as a single caching agent in the presence vector.