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. 22, 2016
Filed:
May. 24, 2013
Bromium, Inc., Cupertino, CA (US);
Ian Pratt, Cambridge, GB;
Rafal Wojtczuk, Warszawa, PL;
Bromium, Inc., Cupertino, CA (US);
Abstract
Approaches for enabling Supervisor Mode Execution Protection (SMEP) for a guest operating system which does not support SMEP. A guest operating system (OS), which does not support SMEP, is executed within a virtual machine. A hypervisor instructs hardware to enable SMEP for the virtual machine executing the guest operating system. When the hypervisor is notified that the hardware has detected the guest operating system instructing a central processing unit (CPU) to execute code stored in virtual memory accessible by user space while the CPU is in supervisor mode, the hypervisor may consult a policy to identify what, if any, responsive action the hypervisor should perform.