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. 26, 2014
Filed:
Oct. 30, 2008
Daniel R. K. Ports, San Francisco, CA (US);
Xiaoxin Chen, Cupertino, CA (US);
Carl A. Waldspurger, Palo Alto, CA (US);
Pratap Subrahmanyam, Saratoga, CA (US);
Tal Garfinkel, Palo Alto, CA (US);
Daniel R. K. Ports, San Francisco, CA (US);
Xiaoxin Chen, Cupertino, CA (US);
Carl A. Waldspurger, Palo Alto, CA (US);
Pratap Subrahmanyam, Saratoga, CA (US);
Tal Garfinkel, Palo Alto, CA (US);
VMware, Inc., Palo Alto, CA (US);
Abstract
A virtual-machine-based system provides a mechanism to implement application file I/O operations of protected data by implementing the I/O operations semantics in a shim layer with memory-mapped regions. The semantics of these I/O operations are emulated in a shim layer with memory-mapped regions by using a mapping between a process' address space and a file or shared memory object. Data that is protected from viewing by a guest OS running in a virtual machine may nonetheless be accessed by the process.