Method, apparatus and system for seamlessly sharing a...

Details Method, apparatus and system for seamlessly sharing a... Method, apparatus and system for seamlessly sharing a...

2008-02-04

2010-06-15

Hafiz, Tariq (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output addressing

C710S030000, C710S056000, C718S104000, C345S543000, C345S545000, C345S565000, C711S006000

Reexamination Certificate

active

07739417

ABSTRACT:
The present invention provides a virtual machine system and a method of accessing a graphics card. The virtual machine system includes a VMM, an SOS and at least one GOS, and further includes a resource converting module for performing IO address converting on graphics card framebuffer accessing data from GOS(s) or mapping MMIO(s) to physical MMIO(s) of a graphics card based on a resource converting table, and sending the processed data to the graphics card; and a framebuffer allocating module for dividing a framebuffer resource of the graphics card into multiple blocks and allocating them respectively to corresponding GOS(s). The resource converting table(s) records correspondences between a resource allocation for the graphics card by SOS and a resource allocation for the graphics card by GOS(s). The framebuffer MMIO resource(s) allocated to the graphics card by GOS(s) is/are the framebuffer allocated to GOS(s) by the framebuffer allocating module.

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Toby Opferman, “Sharing Memory with the Virtual Machine,” Nov. 1, 2005, http://www.ddj.com/cpp/184402033.
Samuel T. King et al., “Operating System Support for Virtual Machines,” Proceedings of the 2003 USENIX Technical Conference, 14 pages.
Michael Sweeney, “Run multiple operating systems on a single PC with Virtual PC,” TechRepublic, Jun. 9, 2003, http://articles.techrepublic.com.com/5100-10878—11-5035049.html.

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