Method for switching a system of virtual machine and hardware devices

Abstract

A method for switching over hardware device of virtualizer system includes sending relevant switchover signal to device model modules of foreground client operation system and background client operation system when system is switched over, releasing hardware device in itself device space by device model module of foreground client operation system and adding hardware device released form device model module of foreground client operation system into itself device space of device model module of background client operation system.

Description

Technical field [0001] The invention relates to a virtual machine technology, in particular to a virtual machine system and a switching method of its hardware equipment. Background technique [0002] In the existing virtualization process, there is a common virtual device platform, including virtual sound card, virtual graphics card, etc. The virtual machine monitor (Virtual Machine Monitor, VMM) compares the guest operating system (Guest OS) to the virtual device platform The access of the virtual device in the virtual device is accessed to the real hardware through the service operating system (Service OS) or the host operating system (Host OS). [0003] Figure 1 is a schematic diagram of an existing Xen virtual machine system. As shown in Figure 1, the Xen virtual machine system includes a guest operating system, a service operating system, a virtual machine monitor, and hardware. Among them, the client operating system provides applications and drive modules, and the service ...

AI Technical Summary

Problems solved by technology

[0013] Since the existing virtual machine system cannot solve the problem of sharing real hardware by multiple guest operating systems, in the above-mentioned general virtualization platform, no matter what the real hardware platform is, the virtualized devices are all the same, although this is for Various guest operating systems work, but the following issues arise:

[0014] 1) The hardware device displayed by the virtual machine system is inconsistent with the real hardware device, and the user cannot see the real hardware;

[0015] 2) In addition, some features of real hardware cannot be used, such as hardware acceleration features of graphics cards, new USB standards, advanced features of sound cards, etc.;

[0016] 3) Since the guest operating system needs to pass through the virtual machine monitor and the service operating system to access the hardware, a corresponding intermediate process is added, which will affect the performance of hardware access;

[0017] 4) Since there is no corresponding management and control for hardware characteristics, the characteristics of real hardware are not fully utilized

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