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:
Mar. 16, 2021
Filed:
Sep. 25, 2019
Intel Corporation, Santa Clara, CA (US);
Michael Kounavis, Portland, OR (US);
David Koufaty, Portland, OR (US);
Anna Trikalinou, Hillsboro, OR (US);
Rupin Vakharwala, Hillsboro, OR (US);
INTEL CORPORATON, Santa Clara, CA (US);
Abstract
Embodiments are directed to providing a secure address translation service. An embodiment of a system includes a memory for storage of data, an Input/Output Memory Management Unit (IOMMU) coupled to the memory via a host-to-device link the IOMMU to perform operations, comprising receiving a memory access request from a remote device via a host-to-device link, wherein the memory access request comprises a host physical address (HPA) that identifies a physical address within the memory pertaining to the memory access request and a first message authentication code (MAC), generating a second message authentication code (MAC) using the host physical address received with the memory access request and a private key associated with the remote device, and performing at least one of allowing the memory access to proceed when the first MAC and the second MAC match and the HPA is not in an invalidation tracking table (ITT) maintained by the IOMMU; or blocking the memory operation when the first MAC and the second MAC do not match.