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. 16, 2025
Filed:
Apr. 09, 2021
Arm Limited, Cambridge, GB;
Jason Parker, Sheffield, GB;
Arm Limited, Cambridge, GB;
Abstract
Address translation circuitry translates a target virtual address (VA) specified by a memory access request into a target physical address (PA) associated with a selected physical address space (PAS) selected from among a plurality of PASs. A granule protection data block is loaded from memory comprising at least one granule protection entry (GPE), each GPE corresponding to a respective granule of PAs and specifying granule protection information (GPI) indicating which of the PASs is an allowed PAS. Filtering circuitry determines whether the memory access request should be allowed to access the target PA, based on whether the selected PAS is indicated as an allowed PAS by the GPI in a target granule protection entry (GPE). Integrity checking circuitry performs a data integrity check on the granule protection data block loaded from memory, and signals a fault when the data integrity check fails.