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:
Aug. 26, 2025
Filed:
Dec. 29, 2022
Ati Technologies Ulc, Markham, CA;
Advanced Micro Devices, Inc., Santa Clara, CA (US);
Philip Ng, Toronto, CA;
Nippon Raval, Markham, CA;
Jeremy W. Powell, Austin, TX (US);
Donald Matthews, Jr., Ft. Collins, CO (US);
David Kaplan, Austin, TX (US);
Advanced Micro Devices, Inc., Santa Clara, CA (US);
ATI TECHNOLOGIES ULC, Markham, CA;
Abstract
A processor supports managing DMA accesses, in secure fashion, at an IOMMU. The IOMMU is configured to ensure that, for a given DMA request issued by an I/O device and associated with a particular executing VM, the device is bound to the VM according to a specified security registration process, and the request is targeted to a region of memory that has been assigned to the VM. The IOMMU thus prevents a malicious entity from accessing confidential information of a VM via DMA requests.