MUMBAI, India, Oct. 26 -- Intellectual Property India has published a patent application (202617091549 A) filed by Arm Limited on July 28, 2026, for Memory Access Request Filtering Based On Requester Group Identifier.
Inventors include Parker, Jason; and Elad, Yuval.
The application for the patent was published on October 23, 2026, under issue no. 43/2026.
Abstract: An apparatus comprises address translation circuitry (16, 26), responsive to a memory access request received from a requester hardware device (4, 5) specifying a target virtual address and a requester group identifier (RGID) associated with the requester hardware device, to translate the target virtual address into a target physical address (PA) based on at least one address translation mapping specified in at least one translation table structure. Filtering circuitry (20) performs a granule protection lookup based on the target PA to identify granule protection attributes associated with a target granule of PAs comprising the target PA. The granule protection attributes are derived from granule protection information specified in a granule protection table structure which is orthogonal to the at least one translation table structure. The filtering circuitry determines, based on the granule protection attributes, whether to prohibit the memory access request from being processed by a cache or a memory system interconnect. The filtering circuitry determines, based on the granule protection attributes and the RGID, whether a group of one or more requester hardware devices associated with the RGID is prohibited from accessing the target granule of PAs.
Disclaimer: Curated by HT Syndication.
