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:
Dec. 29, 2020
Filed:
Mar. 22, 2019
Applicant:
Arm Limited, Cambridge, GB;
Inventors:
Gurunath Ramagiri, Austin, TX (US);
Tushar P. Ringe, Austin, TX (US);
Mukesh Patel, Round Rock, TX (US);
Jamshed Jalal, Austin, TX (US);
Ashok Kumar Tummala, Cedar Park, TX (US);
Mark David Werkheiser, Austin, TX (US);
Assignee:
Arm Limited, Cambridge, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01); G06F 12/14 (2006.01); G06F 9/54 (2006.01); G06F 12/0817 (2016.01);
U.S. Cl.
CPC ...
G06F 12/1441 (2013.01); G06F 9/544 (2013.01); G06F 12/0828 (2013.01);
Abstract
A system, apparatus and method for protecting coherent memory contents in a coherent data processing network by filtering data access requests and snoop response based on the Read/Write (R/W) access permissions. Requests are augmented with access permissions in memory protection units and the access permissions are used to control memory access by home nodes of the network.