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:
Aug. 29, 2017
Filed:
Dec. 31, 2015
Cisco Technology, Inc., San Jose, CA (US);
Joe Epstein, Pleasanton, CA (US);
CISCO TECHNOLOGY, INC., San Jose, CA (US);
Abstract
In an embodiment, a data processing method comprises: in a computer executing a supervisor program, the supervisor program establishing different memory access permissions comprising any combination of read, write, and execute permissions for one or more different regions of memory of a first domain, receiving a request from a process to execute a particular memory page of the regions of memory, the particular memory page comprising a memory access permission set to read-writeable or read-only, throwing an execute fault for the particular memory page, performing one or more responsive actions to restore execution access or content of the particular memory page, and after performing the one or more responsive actions, setting the memory access permission to execute only.