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:
Apr. 09, 2019
Filed:
Dec. 22, 2015
Intel Corporation, Santa Clara, CA (US);
Vedvyas Shanbhogue, Austin, TX (US);
Christopher Bryant, Austin, TX (US);
Jeff Wiedemeier, Austin, TX (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
An apparatus and method for sub-page extended page table protection. For example, one embodiment of an apparatus comprises: a page miss handler to perform a page walk using a guest physical address (GPA) and to detect whether a page identified with the GPA is mapped with sub-page permissions; a sub-page control storage to store at least one GPA and other data related to a sub-page; the page miss handler to determine whether the GPA is programmed in the sub-page control storage; and the page miss handler to send a translation to a translation lookaside buffer (TLB) with a sub-page protection indication set to cause a matching of the sub-page control storage when an access matches a TLB entry with sub-page protection indication.