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. 16, 2023
Filed:
Jul. 21, 2020
Intel Corporation, Santa Clara, CA (US);
David M. Durham, Beaverton, OR (US);
Siddhartha Chhabra, Portland, OR (US);
Ravi L. Sahita, Portland, OR (US);
Barry E. Huntley, Hillsboro, OR (US);
Gilbert Neiger, Portland, OR (US);
Gideon Gerzon, Zichron Yaakov, IL;
Baiju V. Patel, Portland, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A processor executes an untrusted VMM that manages execution of a guest workload. The processor also populates an entry in a memory ownership table for the guest workload. The memory ownership table is indexed by an original hardware physical address, the entry comprises an expected guest address that corresponds to the original hardware physical address, and the entry is encrypted with a key domain key. In response to receiving a request from the guest workload to access memory using a requested guest address, the processor (a) obtains, from the untrusted VMM, a hardware physical address that corresponds to the requested guest address; (b) uses that physical address as an index to find an entry in the memory ownership table; and (c) verifies whether the expected guest address from the found entry matches the requested guest address. Other embodiments are described and claimed.