CN104834613B - Computer system and method for accessing virtual machine - Google Patents

Abstract

The invention provides a computer system and a method for accessing a virtual machine. The computer system comprises a host operating system configured with a host driver and a virtual machine device. The virtual machine device comprises a virtual machine management program and a client operating system. When the host operating system wants to access the virtual machine device, at least one access instruction is sent to the virtual machine management program of the virtual machine device through the host driver program. The client operating system of the virtual machine device receives the access instruction from the virtual machine management program through a client driver, accesses a client application program, a real hardware device and/or a virtual hardware device according to the requirement of the access instruction to generate an access result, and returns the access result to the host operating system.

Description

Computer system and method for accessing virtual machine

technical field

The present invention relates to a computer system and method for accessing a virtual machine, in particular to a computer system and method that can regard the virtual machine as a system device or a peripheral device for data access.

Background technique

A virtual machine can be a special software for simulating the operation behavior of system devices, peripheral devices or application programs. In the conventional virtual machine environment, the operating system on the host side accesses the client data of the virtual machine through network services (eg web server (HTTP), file transfer server (FTP) or network drive (NFS, CIFS)).

The virtual machine is composed of a virtual machine program management program and a virtual machine client operating system, which can also be regarded as a host-side application program in essence. Therefore, the host side can exchange data between the virtual machine and other application programs through a shared memory (SHared Memory, SHM) mechanism.

At present, the client operating system and the application program of the virtual machine are packaged by an OS-level virtualization (OS-level Virtualization) or a technology called a container (Container). However, using the operating system layer virtualization technology to package the client operating system and application program of the virtual machine, the data access between the host application program and the container entity (Container Instance) of the virtual machine will be through an inter-program communication ( Inter-Process Communication, IPC) technology, rather than a similar way to access system devices or peripheral devices.

Therefore, the present invention will propose an innovative virtual machine access technology, which uses the virtual machine as a system device or a peripheral device to perform data access, which will be the technical purpose of the present invention.

Contents of the invention

The present invention proposes a computer system and method for accessing a virtual machine. The computer system can regard the virtual machine as a system device or a peripheral device for data access.

The present invention proposes a computer system and method for accessing a virtual machine. The computer system includes a host-side operating system. The host-side operating system is configured with a host-side driver and a virtual machine device. The host-side operating system or the host-side Applications will use host-side drivers to access virtual machine devices.

The present invention proposes a computer system and method for accessing a virtual machine. When the virtual machine device receives an access command sent by the host-side driver, it will use a hardware driver to access a real hardware device or A virtual hardware device.

The present invention proposes a computer system for accessing a virtual machine. The host operating system of the computer system accesses the real hardware device through the virtual machine device. If the real hardware device fails, it will only affect the operation of the virtual machine device. It will not cause the crash of the host-side operating system.

To achieve the above object, the present invention provides a computer system for accessing a virtual machine, comprising: a host-side driver configured in a host-side operating system; and a virtual machine device configured in the host-side operating system , wherein the host-side operating system or a host-side application program issues at least one access command, and sends the access command to the virtual machine device through the host-side driver program, and the virtual machine device includes: a virtual machine management program, including an expansion module, The expansion module receives the access instruction and converts the instruction format of the access instruction into an instruction format that can be recognized by the virtual machine device; and a client operating system, including: a client driver program; a client service program, wherein the client driver The program receives the access command from the expansion module and sends the access command to the client service program, and the client service program identifies the access command as a read, write or control command; and a client application program, wherein the client service program The program obtains a first access result by accessing the client application according to the request of the access command, and returns the first access result to the host operating system or the host application.

In one embodiment of the present invention, the first access result obtained by the client service program accessing the client application is sent back to the host operating system or the host application through the client driver, the expansion module, and the host driver. .

In an embodiment of the present invention, the client application program of the virtual machine device is a program that can be executed in the host operating system.

In one embodiment of the present invention, the client operating system further includes a first hardware driver, the first hardware driver is connected to a real hardware device through a hardware pass-through unit, and the client service program passes through the first hardware driver and the hardware pass-through unit Send the access command to the real hardware device to access the real hardware device to obtain a second access result, and send the second access result back to the host operating system or the host application.

In one embodiment of the present invention, the second access result obtained by the client service program accessing the real hardware device is sent back to the host operating system or the host application through the client driver, the extension module and the host driver.

In an embodiment of the present invention, the virtual machine management program further includes a virtual hardware device, the client operating system further includes a second hardware driver, and the client service program sends access instructions to the virtual hardware device through the second hardware driver to A third access result is obtained by accessing the virtual hardware device, and the third access result is returned to the host operating system or the host application.

In one embodiment of the present invention, the virtual machine device is emulated by the host operating system as a system device or peripheral device with a PCI, PCIExpress, SATA or USB standard interface.

The present invention also provides a computer system for accessing a virtual machine, including: a host-side driver configured in a host-side operating system; and a virtual machine device configured in a host-side operating system, wherein the host-side The operating system or a host-side application program issues at least one access command, and sends the access command to the virtual machine device through the host-side driver program. The virtual machine device includes: a virtual machine management program, including an expansion module, and the expansion module receives the memory Fetching instructions and converting the instruction format of the access instruction into an instruction format that can be recognized by the virtual machine device; a client operating system, including: a client driver; a client service program, wherein the client driver receives from the expansion module access command and send the access command to the client service program, the client service program identifies the access command as a read, write or control command; and a first hardware driver; and a real hardware device, wherein the first A hardware driver is connected to the real hardware device through a hardware pass-through unit, and the client service program sends an access command to the real hardware device through the first hardware driver and the hardware pass-through unit to access the real hardware device and obtain a second access result , and return the second access result to the host-side operating system or the host-side application program.

The present invention also provides a method for accessing a virtual machine. The method is applicable to a computer system that regards a virtual machine as a system device, a peripheral device or an application program. The computer system includes a host operating system, and the host operates The system is configured with a host driver and a virtual machine device, the virtual machine device includes a virtual machine management program and a client operating system, the virtual machine management program includes an expansion module, and the client operating system includes a client driver, a A client service program and a client application program, the method steps include: issuing an access command from a host-side operating system or a host-side application program; sending an access command to a virtual machine device through a host-side driver; making the virtual machine device Receive the access command through the expansion module of the virtual machine management program and use the expansion module of the virtual machine management program to convert the command format of the access command into a command format that can be recognized by the virtual machine device; make the expansion module of the virtual machine management program pass through the client The driver program sends the access command to the client service program; and makes the client service program access the client application program according to the access command to obtain a first access result and return the first access result to the host operating system or a host-side application.

In an embodiment of the present invention, the client operating system further includes a first hardware driver, the first hardware driver is connected to a real hardware device through a hardware pass-through unit, and the method further includes a step: making the client service program pass through the first The hardware driver and the hardware pass-through unit send the access command to the real hardware device to access the real hardware device to obtain a second access result and send the second access result back to the host operating system or the host application.

In an embodiment of the present invention, the virtual machine management program further includes a virtual hardware device, the client operating system further includes a second hardware driver, and the method further includes a step of: making the client service program send the stored data through the second hardware driver The command is fetched to the virtual hardware device to access the virtual hardware device to obtain a third access result, and the third access result is returned to the host operating system or the host application.

In one embodiment of the present invention, the following steps are also included: making the client service program recognize that the access object of the access command is a client application program, a real hardware device or a virtual hardware device; and making the client service program according to the access command Access objects for accessing client applications, real hardware devices, or virtual hardware devices.

The present invention also provides a method for accessing a virtual machine. The method is applicable to a computer system that regards a virtual machine as a system device, a peripheral device or an application program. The computer system includes a host operating system, and the host operates The system is configured with a host driver and a virtual machine device, the virtual machine device includes a virtual machine management program and a client operating system, the virtual machine management program includes an expansion module, and the client operating system includes a client driver, a The client service program and a first hardware driver, the first hardware driver is connected to a real hardware device through a hardware pass-through unit, the method steps include: issuing an access command from a host-side operating system or a host-side application program; The host-side driver sends the access command to the virtual machine device; the virtual machine device receives the access command through the extension module of the hypervisor and uses the extension module of the hypervisor to convert the command format of the access command into the virtual machine device Recognizable command format; make the expansion module of the virtual machine management program send the access command to the client service program through the client driver; and make the client service program send the access command to the client service program through the first hardware driver and the hardware pass-through unit The real hardware device obtains a second access result by accessing the real hardware device, and the second access result is sent back to the host operating system or the host application.

Description of drawings

FIG. 1 is a schematic structural diagram of an embodiment of a computer system for accessing a virtual machine according to the present invention.

FIG. 2 is a schematic structural diagram of another embodiment of a computer system for accessing a virtual machine according to the present invention.

FIG. 3 is a schematic structural diagram of another embodiment of a computer system for accessing a virtual machine according to the present invention.

FIG. 4 is a flowchart of a method for accessing a client application program of a virtual machine according to the present invention.

FIG. 5 is a flowchart of a method for accessing a real hardware device or a virtual hardware device of a virtual machine according to the present invention.

FIG. 6 is a flowchart of a method for accessing a client application program of a virtual machine, a real hardware device or a virtual hardware device according to the present invention.

detailed description

Please refer to FIG. 1 , which is a structural diagram of an embodiment of a computer system for accessing a virtual machine according to the present invention. As shown in FIG. 1 , the computer system 100 includes a host operating system 11 . A host-side driver 111 and a virtual machine device 12 will be configured in the host-side operating system 11 .

Wherein, the virtual machine device 12 includes a hypervisor 13 and a client operating system 15 . The hypervisor 13 includes an extension module 131 , and the client operating system 15 includes a client driver 151 , a client service program 153 and a client application 155 . In this embodiment, the client application program 155 is a program that can be executed in the host operating system 11 .

When the host-side operating system 11 or a host-side application program wants to perform data access to the client application program 155 of the virtual machine device 12 , at least one access command 110 will be issued to the virtual machine device 12 through the host-side driver 111 . Moreover, the host driver 111 issues a software interrupt to the expansion module 131 to send the access command 110 to the expansion module 131 . After receiving the access command 110 , the expansion module 131 converts the command format of the access command 110 into a command format recognizable by the virtual machine device 12 . The extension module 131 issues a virtual hardware interrupt to the client driver 151 , and sends the format-converted access command 110 to the client driver 151 . After receiving the access command 110 , the client driver 151 issues a software interrupt to the client service program 153 and sends the access command 110 to the client service program 153 . The client service program 153 recognizes that the access command 110 is a command to read, write or control, and sends the access command 110 to the client application program 155, so as to access the client application program 155 according to the request of the access command 110 to obtain A first access result 1551 . The client service program 153 returns the first access result 1551 to the host operating system 11 or the host application that issues the access command 110 via the client driver 151 , the extension module 131 and the host driver 111 . In this way, the host-side operating system 11 or the host-side application program can complete data access to the client application program 155 of the virtual machine device 12 .

Please refer to FIG. 2 , which is a structural diagram of another embodiment of a computer system for accessing a virtual machine according to the present invention. As shown in FIG. 2 , the structure of the computer system 101 of this embodiment is similar to the structure of the computer system 100 of the above embodiment, the difference lies in the configuration components in the client operating system 15 of the virtual machine device 12 .

The client operating system 15 of this embodiment includes a client driver 151 , a client service program 153 and a first hardware driver 157 , but does not include a client application 155 . The first hardware driver 157 is connected to a real hardware device 20 via a hardware pass-through unit 150 . The hardware pass-through unit 150 is a software interface capable of establishing a communication connection between the virtual machine device 12 and the real hardware device 20 .

When the host-side operating system 11 or the host-side application program wants to perform data access to the real hardware device 20 connected to the virtual machine device 12 , at least one access command 110 will be issued to the virtual machine device 12 through the host-side driver 111 . Moreover, the host driver 111 issues a software interrupt to the expansion module 131 to send the access command 110 to the expansion module 131 . After receiving the access command 110 , the expansion module 131 converts the command format of the access command 110 into a command format recognizable by the virtual machine device 12 . The extension module 131 issues a virtual hardware interrupt to the client driver 151 , and sends the format-converted access command 110 to the client driver 151 . After receiving the access command 110 , the client driver 151 issues a software interrupt to the client service program 153 and sends the access command 110 to the client service program 153 . The client service program 153 recognizes that the access instruction 110 is an instruction to read, write or control, and sends the access instruction 110 to the real hardware device 20 through the first hardware driver 157 and the hardware pass-through unit 150, and according to the access instruction 110 request to access the real hardware device 20 to obtain a second access result 2001 . The client service program 153 returns the second access result 2001 to the host operating system 11 or the host application that issues the access command 110 via the client driver 151 , the extension module 131 and the host driver 111 . In this way, the host-side operating system 11 or the host-side application program can complete data access to the external real hardware device 20 through the virtual machine device 12 .

Alternatively, in another embodiment of the present invention, the client operating system 15 further includes a second hardware driver 159 , and the virtual machine management program 13 further includes a virtual hardware device 133 .

Similarly, when the host-side operating system 11 or the host-side application program intends to perform data access to the virtual hardware device 133 of the virtual machine device 12, at least one access command 110 will be issued to the virtual machine device 12 through the host-side driver 111 . The access command 110 is forwarded by the host driver 111 , the extension module 131 and the client driver 151 to be sent to the client service program 153 . The client service program 153 recognizes that the access instruction 110 is an instruction to read, write or control, and sends the access instruction 110 to the virtual hardware device 133 through the second hardware driver 159, so as to access the virtual hardware according to the requirements of the access instruction 110. The hardware device 133 obtains a third access result 1331 . The client service program 153 returns the third access result 1331 to the host operating system 11 or the host application that issued the access command 110 via the client driver 151 , the extension module 131 and the host driver 111 . In this way, the host-side operating system 11 or the host-side application program can complete data access to the virtual hardware device 133 of the virtual machine device 12 .

According to the above method, in the present invention, the virtual machine device 12 can be simulated as a system device or peripheral device by the host operating system 11, for example: a system device with PCI, PCI Express, SATA, USB or other connector specification interfaces or peripheral devices. In other words, the virtual machine device 12 of the present invention can be regarded as a real system device or peripheral device by the host-side operating system 11, then the host-side operating system 11 can use the drivers 111, 151, 157 and/or 159 The virtual machine device 12 is accessed in the manner of accessing a system device or a peripheral device.

In addition, the host operating system 11 of the present invention accesses the real hardware device 20 through the virtual machine device 12 . If the real hardware device 20 fails, it will only affect the operation of the virtual machine device 20 and will not cause the host operating system 11 to crash, so as to ensure the stability of the host operating system 11 accessing the real hardware device 20 . Moreover, the virtual machine device 20 affected by the failure of the real hardware device 20 can resume normal operation as long as it is restarted.

Please refer to FIG. 3 , which is a structural diagram of another embodiment of a computer system for accessing a virtual machine according to the present invention. As shown in FIG. 3 , the virtual machine device 12 of the computer system 102 in this embodiment is configured with a client application program 155 , a virtual hardware device 133 and an externally connected real hardware device 20 .

When the host-side operating system 11 or the host-side application program intends to perform data access to the client application program 155 , the real hardware device 20 or the virtual hardware device 133 , an access command 110 marked with an access object will be generated. Afterwards, when the client service program 153 receives the access instruction 110, it will identify the access object of the access instruction 110 as the client application program 155, the real hardware device 20 or the virtual hardware device 133, and based on the access instruction The access object indicated by 110 accesses the client application 155 , the real hardware device 20 or the virtual hardware device 133 .

Please refer to FIG. 4 , which is a flowchart of a method for accessing a client application program of a virtual machine according to the present invention, and refer to FIG. 1 together. When the host-side operating system 11 or the host-side application program intends to perform data access to the client-side application program 155 of the virtual machine device 12, first, step S301 is executed, and the host-side operating system 11 or the host-side application program will issue at least one stored Instruction fetch 110. Step S303 , the host-side operating system 11 or the host-side application program sends the access command 110 to the virtual machine device 12 through the host-side driver 111 .

Step S305 , the virtual machine device 12 receives the access command 110 through the extension module 131 of the virtual machine hypervisor 13 , and utilizes the extension module 131 to convert the command format of the access command 110 into a command format recognizable by the virtual machine device 12 . Step S307 , the extension module 131 sends the access command 110 to the client service program 153 via the client driver 151 .

Next, in step S311 , after receiving the access command 110 , the client service program 153 identifies the access command 110 as a read, write or control command, and sends the access command 110 to the client application program 155 . Step S313, the client service program 153 accesses the client application program 155 according to the request of the access command 110 to obtain a first access result 1551, and returns the first access result 1551 to the host that issued the access command 110 End operating system 11 or host end application program. In this way, the host-side operating system 11 or the host-side application program can complete the data access process for the client application program 155 of the virtual machine device 12 .

Please refer to FIG. 5 , which is a flowchart of a method for accessing a real hardware device or a virtual hardware device of a virtual machine according to the present invention, and refer to FIG. 2 together. When the host-side operating system 11 or the host-side application program intends to perform data access to the real hardware device 20 or the virtual hardware device 133 of the virtual machine device 12, as in the above-mentioned steps S301 to S307, the host-side operating system 11 or the host-side application program Issue at least one access command 110 to the virtual machine device 12 through the host driver 111, and the extension module 131 of the virtual machine device 12 converts the command format of the access command 110 after receiving the access command 110 and passes the client driver program 151 sends the access command 110 to the client service program 153 .

Next, in step S321, after the client service program 153 receives the access command 110, it recognizes that the access command 110 is a read, write or control command, and sends it through the hardware driver 157, 159 and/or the hardware pass-through unit 150 The instruction 110 is accessed to the real hardware device 20 or the virtual hardware device 133 . In step S323, the client service program 153 obtains a second access result 2001 or a third access result 1331 by accessing the real hardware device 20 or the virtual hardware device 133 according to the request of the access command 110, and stores the second access result 2001 or a third access result 1331. The fetch result 2001 or the third access result 1331 is sent back to the host-side operating system 11 or the host-side application program that issued the access command 110 . In this way, the host-side operating system 11 or the host-side application program can complete the process of data access to the real hardware device 20 or the virtual hardware device 133 of the virtual machine device 12 .

Please refer to FIG. 6 , which is a flowchart of a method for accessing a client application program of a virtual machine, a real hardware device or a virtual hardware device according to the present invention, and refer to FIG. 3 together. When the host-side operating system 11 or the host-side application program intends to perform data access to the client application program 155 of the virtual machine device 12, the real hardware device 20 or the virtual hardware device 133, as in the above steps S301 to S307, the host-side operating system 11 or the host-side application program will issue at least one access command 110 to the virtual machine device 12 through the host-side driver 111, and the expansion module 131 of the virtual machine device 12 converts the instruction of the access command 110 after receiving the access command 110 format and send the access command 110 to the client server program 153 via the client driver program 151 .

Next, in step S308 , the client service program 153 identifies whether the access object of the access instruction 110 is the client application program 155 . If so, the access object of the access instruction 110 is the client application program 155, continue to execute step S311, the client service program 153 sends the access instruction 110 to the client application program 155; and execute step S313, the client service program 153 according to The request of the access command 110 accesses the client application 155 to obtain the first access result 1551 , and returns the first access result 1551 to the host operating system 11 or the host application that issued the access command 110 .

If not, the access object of the access command 110 is the real hardware device 20 or the virtual hardware device 133, and then proceed to step S321, and the client service program 153 sends the access command through the hardware drivers 157, 159 and/or the hardware pass-through unit 150 110 to the real hardware device 20 or the virtual hardware device 133; and execute step S323, the client service program 153 accesses the real hardware device 20 or the virtual hardware device 133 according to the request of the access instruction 110 to obtain the second access result 2001 or The third access result 1331 , and returns the second access result 2001 or the third access result 1331 to the host operating system 11 or the host application that issued the access command 110 .

What is described above is only a preferred embodiment of the present invention, and is not used to limit the scope of the present invention, that is, all equal changes made according to the shape, structure, characteristics and spirit described in the patent scope of the present invention All modifications and modifications should be included in the patent application scope of the present invention.

Claims (15)

1. to access the computer system of virtual machine, it is characterised in that including：

One host side driver, it is configured in a host side operating system；And

One virtual machine, it is configured in the host side operating system, wherein the host side operating system or a host side application Program issues an at least access instruction, and sends the access instruction to the virtual machine by the host side driver, should Virtual machine includes：

One virtual machine management program, including an enlargement module, the enlargement module receive the access instruction and by the access instructions Instruction format is converted to the instruction format that the virtual machine can recognize；And

One client operating system, including：

One client driver；

One client service programs, the wherein client driver receive the access instruction from the enlargement module and access this Instruction is sent to the client service programs, and the client service programs recognize the access instruction as reading, write-in or control Instruction；

One client application, the wherein client service programs should to access the client according to the requirement of the access instruction One first access results are obtained with program, and first access results are back to the host side operating system or the host side Application program；And

First hardware drive program, first hardware drive program lead directly to unit via a hardware and connect a real hardware device, The client service programs lead directly to the unit transmission access instruction by first hardware drive program and the hardware extremely should Real hardware device obtains one second access results to access the real hardware device, and second access results are back to The host side operating system or the host side application program.

It is 2. according to claim 1 accessing the computer system of virtual machine, it is characterised in that the client service First access results acquired by client application described in program access are via the client driver, expansion mould Block and host side driver are to be back to the host side operating system or host side application program.

It is 3. according to claim 1 accessing the computer system of virtual machine, it is characterised in that the virtual machine Client application be a program that can be performed in the host side operating system.

It is 4. according to claim 1 accessing the computer system of virtual machine, it is characterised in that the client service Second access results are via the client driver, enlargement module acquired by real hardware device described in program access And host side driver is to be back to the host side operating system or host side application program.

It is 5. according to claim 1 accessing the computer system of virtual machine, it is characterised in that the virtual machine By the host side operation system simulated into one have PCI, PCI Express, SATA or USB specification interface system and device or Peripheral device.

6. to access the computer system of virtual machine, it is characterised in that including：

One host side driver, it is configured in a host side operating system；And

One virtual machine, it is configured in the host side operating system, wherein the host side operating system or a host side application Program issues an at least access instruction, and sends the access instruction to the virtual machine by the host side driver, should Virtual machine includes：

One virtual machine management program, including an enlargement module, the enlargement module receive the access instruction and by the access instructions Instruction format is converted to the instruction format that the virtual machine can recognize；And

One client operating system, including：

One client driver；

One client service programs, the wherein client driver receive the access instruction from the enlargement module and access this Instruction is sent to the client service programs, and the client service programs recognize the access instruction as reading, write-in or control Instruction；

One client application, the wherein client service programs should to access the client according to the requirement of the access instruction One first access results are obtained with program, and first access results are back to the host side operating system or the host side Application program；And

One virtual hardware device, the client operating system further include one second hardware drive program, the client service programs The access instruction is sent to the virtual hardware device by second hardware drive program to access the virtual hardware device to take One the 3rd access results are obtained, and the 3rd access results are back to the host side operating system or the host side application program.

7. to access the computer system of virtual machine, it is characterised in that including：

One host side driver, it is configured in a host side operating system；

One virtual machine, it is configured in the host side operating system, wherein the host side operating system or a host side application Program issues an at least access instruction, and sends the access instruction to the virtual machine by the host side driver, should Virtual machine includes：

One virtual machine management program, including an enlargement module, the enlargement module receive the access instruction and by the access instructions Instruction format is converted to the instruction format that the virtual machine can recognize；

One client operating system, including：

One client driver；

One client service programs, the wherein client driver receive the access instruction from the enlargement module and access this Instruction is sent to the client service programs, and the client service programs recognize the access instruction as reading, write-in or control Instruction；And

One first hardware drive program；And

One real hardware device, wherein first hardware drive program lead directly to unit via a hardware and connect real hardware dress Put, the client service programs by first hardware drive program and the hardware lead directly to unit, and to send the access instruction true to this Real hardware unit obtains one second access results to access the real hardware device, and second access results are back into this Host side operating system or the host side application program.

It is 8. according to claim 7 accessing the computer system of virtual machine, it is characterised in that the client service Second access results are via the client driver, enlargement module acquired by real hardware device described in program access And host side driver is to be back to the host side operating system or host side application program.

It is 9. according to claim 7 accessing the computer system of virtual machine, it is characterised in that the Virtual Machine Manager Program also includes a virtual hardware device, and the client operating system also includes one second hardware drive program, the client Hold service routine virtual to access this to the virtual hardware device by second hardware drive program transmission access instruction Hardware unit and obtain one the 3rd access results, and the 3rd access results are back to the host side operating system or main frame Hold application program.

It is 10. according to claim 7 accessing the computer system of virtual machine, it is characterised in that the virtual machine dress Put by the host side operation system simulated into a system and device with PCI, PCI Express, SATA or USB specification interface Or peripheral device.

11. to access the method for virtual machine, its method is useful in one and virtual machine is considered as into system and device, peripheral device or application In the computer system of program, it is characterised in that the computer system includes a host side operating system, host side operation system Under unified central planning to be equipped with a host side driver and a virtual machine, the virtual machine includes a virtual machine management program and a visitor Family end operating system, the virtual machine management program include an enlargement module, and the client operating system drives including a client Program, a client service programs, a client application and one first hardware drive program, first hardware drive program Unit is led directly to via a hardware and connects a real hardware device, and this method step includes：

From the host side operating system or the access instruction of a host side application issued one；

The access instruction is sent to the virtual machine via the host side driver；

Make the virtual machine receive the access instruction via the enlargement module of the virtual machine management program and utilize this virtual The enlargement module of machine management program is converted to the instruction format of the access instruction instruction that the virtual machine can recognize Form；

The enlargement module of the virtual machine management program is made to send the access instruction to the client via the client driver Hold service routine；

The client service programs are made to access the client application according to the access instruction to obtain one first access results And first access results are back to the host side operating system or the host side application program；And

Make the client service programs lead directly to unit through first hardware drive program and the hardware and send the access instruction extremely The real hardware device obtains one second access results to access the real hardware device and returns second access results To the host side operating system or the host side application program.

It is 12. according to claim 11 accessing the method for virtual machine, it is characterised in that the virtual machine management program Also include a virtual hardware device, the client operating system also includes one second hardware drive program, and this method also includes One step：

Make the client service programs send the access instruction to the virtual hardware by second hardware drive program to fill Put to access the virtual hardware device and obtain one the 3rd access results and the 3rd access results are back to the host side Operating system or host side application program.

It is 13. according to claim 12 accessing the method for virtual machine, it is characterised in that also to comprise the following steps：

Make the client service programs recognize the access instruction access object be the client application, it is true hard Part device or virtual hardware device；And

The client service programs are made to access the client application, true according to the access object in the access instruction Real hardware unit or virtual hardware device.

14. to access the method for virtual machine, its method is useful in one and virtual machine is considered as into system and device, peripheral device or application In the computer system of program, it is characterised in that the computer system includes a host side operating system, host side operation system Under unified central planning to be equipped with a host side driver and a virtual machine, the virtual machine includes a virtual machine management program and a visitor Family end operating system, the virtual machine management program include an enlargement module, and the client operating system drives including a client Program, a client service programs and one first hardware drive program, first hardware drive program are straight-through single via a hardware Member one real hardware device of connection, this method step include：

From the host side operating system or the access instruction of a host side application issued one；

The access instruction is sent to the virtual machine via the host side driver；

Make the virtual machine receive the access instruction via the enlargement module of the virtual machine management program and utilize this virtual The enlargement module of machine management program is converted to the instruction format of the access instruction instruction that the virtual machine can recognize Form；

The enlargement module of the virtual machine management program is made to send the access instruction to the client via the client driver Hold service routine；And

Make the client service programs lead directly to unit by first hardware drive program and the hardware and send the access instruction extremely The real hardware device obtains one second access results to access the real hardware device and returns second access results To the host side operating system or the host side application program.

It is 15. according to claim 14 accessing the method for virtual machine, it is characterised in that the virtual machine management program Also include a virtual hardware device, the client operating system also includes one second hardware drive program, and this method also includes One step：

Make the client service programs send the access instruction to the virtual hardware by second hardware drive program to fill Put to access the virtual hardware device and obtain one the 3rd access results and the 3rd access results are back to the host side Operating system or host side application program.