Embedded Hypervisor-oriented multi-window display virtual operation method

An operation method and multi-window technology, applied in the field of multi-window display virtualization operation, can solve the problems of immature products in the embedded field, unsuitable for embedded, high hardware requirements, etc., to achieve easy display switching, fast switching, and easy The effect of transplantation

Inactive Publication Date: 2011-11-16
XI AN JIAOTONG UNIV
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  • Abstract
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Problems solved by technology

For LCD virtualization display, the more popular virtualization solutions include VMware, Xen, Virtual Logic, etc. VMware is a full virtualization solution that can run the Guest OS without modification, that is, the original LCD device driver can be used without modification In the virtual machine environment, but its structure is complex, the hardware requirements are very high, it is not suitable for embedded
Xen has a paravirtualization solution, and the Guest OS can run on Xen after modification, but it is mainly oriented to the PC and server fields, and has not yet launched mature products in the embedded field

Method used

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  • Embedded Hypervisor-oriented multi-window display virtual operation method
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  • Embedded Hypervisor-oriented multi-window display virtual operation method

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Embodiment Construction

[0027] The multi-window display virtualization operation method oriented to the embedded Hypervisor provided by the present invention, by virtualizing the physical display device, multiple GuestOSs can share and use the physical display device in time sharing, and at the same time facilitate display switching of different systems. The multi-window display virtualization operation mainly includes the following two aspects: the Hypervisor generates a virtual device for the upper-layer GuestOS to drive, and realizes the mapping of the virtual display device to different windows through the operation of the display interface of the hardware abstraction layer. Below in conjunction with GuestOS is Linux (2.6.28 kernel), and physical display device is the LCD that supports multi-window display, the present invention is described in further detail, described is the explanation of the present invention rather than limitation.

[0028] see figure 1 As shown in the structure diagram of T...

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Abstract

The invention discloses an embedded hypervisor-oriented multi-window display virtual operation method. Virtual display equipment and virtual display service in virtual display driving management are created in a domain in which GuestOS on Hypervisor is located; a display interface is arranged in a hardware abstraction layer of the Hypervisor, the display interface is an encapsulation of a physical display equipment window operation, and operation on a window register of a physical display equipment controller is completed after the display interface is called and operated. By virtue of virtual hardware display, multiple GuestOS can use hardware display in a time-sharing way, the windows are uniformly managed in a Hypervisor layer by virtue of the hardware abstraction layer, coupling degree of systems is reduced, and system display is more stable.

Description

technical field [0001] The invention belongs to the technical field of embedded virtual machines, and relates to an embedded Hypervisor-oriented multi-window display virtualization operation method. Background technique [0002] In Type I Hypervisor systems, the Hypervisor runs directly on the hardware platform as system software, which can directly manage physical devices and support the operating system GuestOS (guest operating system) running on the Hypervisor, and serve the GuestOS through the interface provided by the Hypervisor. The hardware abstraction layer is an interface layer between the operating system kernel and the hardware device, and its purpose is to abstract the hardware. It hides the hardware interface details of a specific platform, provides a virtual hardware platform for the operating system, makes it hardware-independent, and can be transplanted on various platforms. [0003] LCD virtualization belongs to I / O virtualization and is an integral part of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/048G06F9/44
Inventor 梅魁志张朋丰李铁强李国辉赵季中展华益
Owner XI AN JIAOTONG UNIV
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