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. 17, 2020
Filed:
Jan. 10, 2017
Vmware, Inc., Palo Alto, CA (US);
David Dunn, Bellevue, WA (US);
Alok Nemchand Kataria, Pune, IN;
Wei Xu, Palo Alto, CA (US);
Jeffrey W. Sheldon, Palo Alto, CA (US);
VMware, Inc., Palo Alto, CA (US);
Abstract
Mechanisms to protect the integrity of a data structure that is traversed to locate protected memory pages are provided. Leaf nodes of the data structure store mappings that indicate which memory pages are protected. Both the pages indicated by the mappings and the pages that store the data structure are monitored by a tracing service that sends a notification to the hypervisor when a write to a traced page occurs. When system software receives such a notification, the system software traverses the data structure to determine whether any of the memory pages of the data structure is the traced page that was written to. If so, the alert action for that page is performed. If not, the system software determines whether any of the mappings in the leaf nodes include such a page and, if so, the alert action for that page is performed.