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. 31, 2022
Filed:
Jun. 11, 2018
Applicant:
Arm Limited, Cambridge, GB;
Inventors:
Jason Parker, Sheffield, GB;
Matthew Lucien Evans, Cambridge, GB;
Gareth Rhys Stockwell, Cambridge, GB;
Martin Weidmann, Haverhill, GB;
Assignee:
Arm Limited, Cambridge, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 12/00 (2006.01); G06F 12/14 (2006.01); G06F 9/455 (2018.01);
U.S. Cl.
CPC ...
G06F 12/1441 (2013.01); G06F 9/45558 (2013.01); G06F 12/145 (2013.01); G06F 12/1491 (2013.01); G06F 2009/45583 (2013.01);
Abstract
Memory access circuitry enforces ownership rights for memory regions. A given memory region is associated with an owner realm specified from multiple realms, each realm corresponding to a portion of at least one software process executed by processing circuitry. A realm management unit initialises the realms. The realm management unit is configured to initialise realms including a full realm which corresponds to a given software process and a sub-realm corresponding to a given address range within the given software process.