Computer and method for realizing universal display

Abstract

The invention provides a computer and a method for realizing universal display. The computer comprises a virtual machine manager, a second guest operation system, a shared video memory unit, a servo operation system unit and a first guest operation system, wherein the virtual machine manager is used for mapping an address; the second guest operation system operates on the virtual machine manager; the shared video memory unit is used for storing data required for display and the information of the second guest operating system in need of a simulated video card; the servo operation system unit operates on the virtual machine manager and is used for generating a command when monitoring the information of the second guest operating system in need of the simulated video card; and the first guest operating system operates on the virtual machine manager and is used for acquiring the command, reading data from the shared video memory unit according to the command and displaying the data through a physical video card. By using the invention, a guest does not need to directly operate or switch the physical video card, thereby greatly shortening the switching time between the guest operating systems.

Description

technical field [0001] The invention relates to virtual machine technology, in particular to a computer and method for realizing general display. Background technique [0002] The creation of a virtual machine makes it necessary for multiple operating systems on the same computer to share a graphics card. In a general implementation, only the main operating system (Sevice OS) can access the real graphics card, while the guest operating system (GUEST OS) can access the real graphics card. The graphics card accessed is virtualized by the device unit on the Service OS; since the graphics card of the Guest OS is simulated by the Service OS, it does not have two-dimensional (2D), three-dimensional (3D) acceleration features, and the display performance is poor. [0003] In order to solve this problem, a scheme to separate graphics card DHA and video memory is proposed, such as figure 1 As shown, in this way, the GUEST OS that needs high display characteristics can use the graphi...

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Problems solved by technology

[0004] In the process of implementing the present invention, the inventor found that there are at least the following problems in the prior art: in the virtual machine system, when DGOS is using an independent graphics card, if another Guest OS needs to use an analog graphics card, SOS needs to use the current The display permission of the DGOS being used is released, and the SOS simulates the graphics card for another Guest OS, so that switching between different Guest OSs is very time-consuming, and when some switching is frequent, due to Incomplete processing of the data in the registers during each switching process will cause abnormalities in the computer display

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