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:
Feb. 24, 2015
Filed:
Apr. 18, 2011
Shanwei Cen, Portland, OR (US);
Raman Srinivasan, Portland, OR (US);
David J. Cowperthwaite, Hillsboro, OR (US);
Shanwei Cen, Portland, OR (US);
Raman Srinivasan, Portland, OR (US);
David J. Cowperthwaite, Hillsboro, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A system comprises a guest graphics subsystem with a combined virtual graphics device that combines underlying emulated virtual graphics device and virtual function of a physical graphics device to support virtual machine migration. The VMM in the system may expose to the guest a single combined virtual PCIe graphics device that combines access to the virtual graphics device and the virtual function, and switches between the virtual graphics device and the virtual function for graphics acceleration without triggering a PnP event in the guest OS. In response to the switch, the guest graphics stack and applications may redraw their windows to provide a consistent user experience.