Virtual machine system and device access method thereof

Abstract

This invention provides one virtual host system and its device visit method, wherein, the system comprises at least one customer operation system, virtual monitor device and hardware device; each system runs one front drive to receive device visit data to send the data to virtual monitor and to send the data to visitor; virtual monitor runs at least one back drive to use preset relation to visit data on hardware device and to send data from hardware device data to relative customer operation system.

Description

technical field [0001] The invention relates to a virtual machine technology, in particular to a virtual machine system and a device access method thereof. Background technique [0002] With the development of computer systems, virtualization technology has also been widely used in the computer field. Modern computers already have the ability to use virtualization technology to support multiple virtual machines, and run separate operating systems on each virtual machine. However, there are still some problems in the application of virtualization technology in personal computers, and the main problem is the problem of operating efficiency, especially the problem of accessing external hardware devices. Therefore, how to improve the access efficiency of the virtual machine system, especially the virtual Windows system, to hardware devices is the most urgent problem to be solved when the virtual machine system is applied in personal computing. [0003] At present, a more effec...

AI Technical Summary

Problems solved by technology

However, there are still some problems in the front-end and back-end driving methods

[0004] First of all, the back-end drivers in the prior art all need to rely on an operating system. In Xen, they rely on the servo operating system (Service OS, SOS), that is, domain 0, and in VMWare, they rely on the host operating system (Host OS). , which adds additional overhead to the virtual machine, and thus increases a lot of system overhead, such as system scheduling, memory management, etc., which reduces the operating efficiency of the system

[0005] In addition, there is a one-to-one correspondence between the front-end driver and the back-end driver in the prior art, that is, if there are several client operating systems in the system, several front-end drivers need to be run, and a corresponding number of back-end drivers must also be kept in the system memory. Except for a few key processing routines, most of the processing routines of these back-end drivers are the same, which causes a great waste of system resources and further affects the operating efficiency of the system

Therefore, the operating efficiency of the virtual machine system using front-end and back-end driving methods in the prior art is still unsatisfactory, and it is also difficult to simplify the virtual machine system

Images