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. 11, 2021
Filed:
Dec. 21, 2018
Intel Corporation, Santa Clara, CA (US);
Mingwei Zhang, Hillsboro, OR (US);
Ravi Sahita, Portland, OR (US);
David A. Koufaty, Portland, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
In embodiments, an apparatus for computing includes a protection key register (PKR) having 2bits, where N is an integer, to store a plurality of permission entries corresponding to protected memory domains, and a protected memory domain controller, coupled to the PKR. In embodiments, the memory domain controller is to: obtain protection key (PK) bits from a page table entry for a target page address; obtain one or more additional PK bits from a target linear memory address; and combine the PK bits and the additional PK bits to form a PK domain number to index into the plurality of permission entries in the PKR to obtain a permission entry for a protected memory domain.