JPS63268035A - Remote terminal control system via local terminal simulator - Google Patents

Abstract

PURPOSE:To shorten the response time of a data communication circuit by adding a means to a local terminal simulator to hold the key information received from a remote terminal and therefore decreasing the using frequency of said simulator for the data communication circuit. CONSTITUTION:When a key signal is received from a remote terminal 9 via a communication circuit, an attention interruption is applied to a virtual computer monitor VMM3 from a local terminal simulator 6. While the key signal is transferred to the VMM3 and at the same time held in a received data storing area 67 in case an input/output instruction SIO is produced from the VMM3. Then another instruction SIO is produced from an operating system OS1 of a virtual computer VM in response to the attention interruption given from the VMM3. Thus the key signal stored in the area 67 is transferred to the OS1. As a result, it is nor required to use again the communication circuit to receive the key signal form the terminal 9. Then the using frequency of the communication circuit is decreased.

Description

[Detailed Description of the Invention] [Table of Contents] Overview Industrial Application Fields Prior Art and Problems to be Solved by the Invention Means for Solving the Problems Action Examples Effects of the Invention [Summary] Few (also: An operating system (OS) of multiple virtual machines (VM), a virtual machine monitor (between Vs) that centrally controls the operating system (OS), and a In a computer system consisting of a local terminal controlled by a computer monitor (VMM), a server virtual machine (SVM), which is one of the virtual machines (VM), is equipped with a data communication network management processing mechanism and a local terminal simulator. A communication control device is provided under the data communication network management processing mechanism, and a remote terminal is connected via a data communication line.
)'s operating system (O8) and the remote terminal via the local terminal simulator, when input/output processing based on attention interrupts is performed, upon receiving key information from the remote terminal,
When the local terminal simulator issues an attention interrupt to the virtual machine monitor (VMM), detects an input/output command (S10) from the virtual machine monitor (VMM), and transfers the key information, the key By providing a means for holding information, the virtual machine monitor (V
When the local terminal simulator detects an input/output instruction (SIO) issued by the operating system (OS) of the virtual machine (VM) in response to an attention interrupt from the virtual machine (VM), the holding means holds the input/output instruction (SIO) issued by the operating system (OS) of the virtual machine (VM). This key information is sent back to the operating system (OS) of the virtual computation 1m (VM).

[Industrial application field]

The present invention provides at least a plurality of virtual machines (an old operating system (O8) and a virtual machine monitor (OS) for integrated control of the operating system (OS)).
In a computer system consisting of a virtual machine (VM) and a local terminal connected to the virtual machine (VM) and controlled by the virtual machine monitor (VMM), a server virtual machine that is one of the virtual machines (VM) calculator(
SVl'l) is provided with a data communication network management processing mechanism and a local terminal simulator, and under the data communication network management processing mechanism, a communication control device,
A remote terminal is connected via a data communication line, and the operating system (OS) of the virtual computing i (VM) is
This relates to a remote terminal control method using a local terminal simulator when input/output processing is performed between a remote terminal and a remote terminal via the local terminal simulator, and in particular, when inputting key information from a remote terminal, The present invention relates to an attention interrupt processing method in the local terminal simulator.

Conventionally, a so-called virtual computing (VM) system is constructed when one real computer is used to simultaneously execute a current business and develop a new system, for example.

In this case, a virtual machine monitor (VMM) is provided to centrally control the operating systems (OS) of the plurality of virtual machines (VMs) set on real storage, and is connected to the input/output device (Ilo). Interface control is
This is done via this virtual machine monitor (VMM).

In such a virtual machine (VM) system (center system), if the new system described above is developed using a remote terminal installed in a remote location, the center system can also access the remote terminal. , must be visible to the local terminal.

Therefore, one of the virtual machines (VMs) mentioned above is assigned for remote terminal control (this is called a server VM), and the input/output processing of the local terminal is simulated to control the remote terminal. A data communication network management processing mechanism (NCA) is provided to set up a communication path between the local terminal simulator and the data communication line to which the remote terminal is connected, and to perform transmission and reception processing with the remote terminal, and the above-mentioned center system proposed a method for controlling remote terminals and performing input/output processing through the local terminal simulator, and the applicant of the present application filed Japanese Patent Application No. 11779/1986.
It is disclosed in Publication No. 9 "Virtual Computer System".

As mentioned above, in such a computer system,
Input/output processing to the local terminal is performed by multiple virtual computers (
The data must go through the virtual machine monitor (VMM), which centrally controls the VM.

FIG. 3 is a diagram showing an example of the configuration of a general virtual computer system, in which a virtual machine monitor (VMM
) 3, and the input/output device 10 always connects the operating system (
OS) 1.

Figure 4 shows the local terminal and virtual machine monitor (VMM)
It is a diagram showing the relationship between each virtual machine (VM).
The system developer operates this local terminal 10 to install his/her own operating system (OS) L virtual computer (Vl'). l)
Operate 2.

FIG. 5 is a diagram showing the positioning of the local terminal simulator, in which a server VM 4 is set up to cooperate with a virtual machine monitor (VMM) 3, and a data communication network management processing mechanism (NCA) 7 and a local A virtual machine monitor (VM) is provided with a terminal simulator 6.
3. Alternatively, the input/output processing from the operating system (OS) 1 of each virtual machine (VM) 2 to the local terminal is carried out via the virtual machine monitor (VMMB2 and others), and the data communication is performed via the local terminal simulator 6 of the server VM 4. By notifying the network management processing mechanism (NCA) 7, the corresponding virtual machine (v) can be operated from the remote terminal 9 using the data communication line.

Therefore, each time the local terminal simulator 6 performs input/output processing with the remote terminal 9, the local terminal simulator 6 monopolizes the data communication line. Improving usage efficiency is an essential condition.

[Prior art and problems to be solved by the invention] FIG. 6 is a diagram illustrating the conventional attention interrupt processing between a remote terminal and an operating system (O8).

First, in the remote terminal 9, when the operator sets specific information in the update field 91a, which is an operator write area in the terminal buffer 91, and then presses a specific key, the data communication line is changed.

Communication control device 8. A local terminal simulator 6 via a data communication network management processor (NCA) 7
Then, the updated field information is sent.

When the local terminal simulator 6 completes receiving the update field information, the virtual machine monitor (VM
M) Make an attention interrupt at 3.

In the virtual machine monitor (VMM) 3, when the attention interrupt is detected, the corresponding input/output instruction (SI
O) and sends a channel command word (CCW) to the local terminal simulator 6 via the operating system (OS) 5 of the server VM 4.

In the local terminal simulator 6, the command (
CCW), recognizes that it is a data transfer request for the attention interrupt, and sends the request to the remote terminal 9.
The update field information received from the input/output command is sent to the virtual machine monitor (VMM) 3 that issued the input/output command. When the transfer is completed, a completion interrupt is generated.

When the virtual machine monitor (VMM) 3 receives the update field information and detects a completion interrupt from the local terminal simulator 3, it updates the operating system C05 of the virtual machine (VM) 2 which is the input/output processing destination of the remote terminal 9. )1, performs an attention interrupt.

In the operating system (OS) 1,
In response to the attention interrupt, an input/output instruction (SIO
) and send the command word (CCW) to the virtual machine monitor (VMM) 3. It is sent to the local terminal simulator 6 via the operating system (OS) 5 of the server VM 4.

In the local terminal simulator 6, the command (
CCW) and update field read instruction (R
/M), etc., and requests the data communication network management processing mechanism 7 to send the command.

When the remote terminal 9 receives the update field read command (R/M), the remote terminal 9 reads the current terminal buffer 91.
Update field area 91. Send the information in a to the local terminal simulator.

The local terminal simulator 6, which has received the updated field information, transmits the 8 data to the operating system (OS) 1 of the virtual machine (VM) 2 that issued the input/output command via the virtual machine monitor (VMM) 3. When the transfer is completed, a completion interrupt is generated and the completion interrupt is sent to the operating system (OS).
1 is detected, the input/output processing corresponding to the series of attention interrupts is terminated.

Therefore, in this conventional method, the virtual machine monitor (
Input/Output Instructions (SIO) from the VMM) 3, followed by the operating system (OS) of the Virtual Compute A (VM)
) If a human output command corresponding to an input/output instruction (SIO) from 1 is sent, the first virtual machine monitor (V
The command (CCW) from the next virtual machine (VM) 2's operating system (OS) 1 is reflected in the command (CCW) from the remote terminal 9. ) should reflect the same data, but since input/output processing for the first command (CCW) has been completed, normal relay processing is performed and the update field is sent to remote terminal 9. Because the read command (R/M) was sent and the same update field information was received again from the remote terminal, the data communication line was used three times, which only reduced the usage efficiency of the data communication line. There is a problem in that this also causes a decrease in the response of data communication.

In view of the above-mentioned conventional drawbacks, the present invention provides the following steps to perform input/output processing between a remote terminal and a specific virtual machine (VM).
In a virtual computer system that includes a local terminal simulator and a server virtual machine (SVM) equipped with a data communication network management processing mechanism, reduce the number of times the data communication line is used by the local terminal simulator when an attention interrupt is received from a remote terminal. The purpose of the present invention is to provide a remote terminal control method that allows

[Means for Solving the Problems] FIG. 1 is a diagram showing the principle configuration of a remote terminal control system using a local terminal simulator of the present invention.

In the present invention, at least an operating system (OS) 1 of a plurality of virtual machines (VMs) and a virtual machine monitor (
In a computer system consisting of a virtual machine (VM) 3 and a local terminal connected corresponding to the virtual machine (VM) and controlled by the virtual machine monitor (VM) (3), one of the virtual machines (VM) A server virtual machine (SVM) 4 is provided with a data communication network management processing mechanism 7 and a local terminal simulator 6, and a communication control device 8 and a data communication line are provided under the data communication network management processing mechanism 7. Connect the remote terminal 9 via the operating system of the virtual machine (VM) (
When performing input/output processing using an attention interrupt between the OS) 1 and the remote terminal 9 via the local terminal simulator 6, the local terminal simulator 6 receives key information from the remote terminal 9. When this happens, an attention interrupt is sent to the virtual machine monitor (VMM) 3, and the virtual machine monitor (VMM) 3 detects the attention interrupt and issues an input/output instruction (SIO) to the local terminal. When the key information detected by the simulator 6 and received from the remote terminal 9 is transferred to the virtual machine monitor (VMM) 3, a means 67 for holding the key information is provided, and the key information is transferred to the virtual machine monitor (VMM) 3.
MM) 3, when the input/output processing due to the attention interrupt is completed, the virtual machine monitor (VMM
) 3 is the virtual machine (old operating system (OS)
When the local terminal simulator 6 detects that the operating system (OS) 1 issues an input/output instruction (SIO) corresponding to the attention interrupt, the key information holding means 67 is configured to be transferred to the operating system (OS) 1 of the virtual machine (VM).

[Effect]

That is, according to the present invention, at least an operating system (OS) of a plurality of virtual machines (VM), a virtual machine monitor (VMM) that performs integrated control of the operating system (O8), and the virtual machine (VM) In a computer system consisting of a local terminal connected correspondingly to the virtual machine monitor (VMM) and controlled by the virtual machine monitor (VMM), a server virtual machine (SVM), which is one of the virtual machines (VM), has data communication network management A processing mechanism and a local terminal simulator are provided, and under the data communication network management processing mechanism, a communication control device and a remote terminal are connected via a data communication line, and an operating system (VM) of the virtual computing i (VM) is installed. When performing input/output processing based on attention interrupts between the OS) and the remote terminal via the local terminal simulator, the local terminal simulator receives the key information from the remote terminal. , a means for generating an attention interrupt to the virtual machine monitor (VMM), detecting an input/output instruction (SIO) from the virtual machine monitor (VMM), and retaining the key information at the time of transferring the key information; By providing an input/output instruction (SI) issued by the operating system (OS) of the virtual machine (VM) in response to an attention interrupt from the virtual machine monitor (VMM),
O) when the local terminal simulator detects
Since the key information held by the holding means is sent back to the operating system (OS) of the virtual machine (VM),
This eliminates the number of times the local terminal simulator uses the line for frequent input operations, and has the effect of significantly shortening the line response time.

〔Example] Embodiments of the present invention will be described in detail below with reference to the drawings.

The above-mentioned FIG. 1 is a principle block diagram of a remote terminal control method using a local terminal simulator of the present invention, and FIG. 2 is a diagram schematically showing an embodiment of the present invention.
The received data holding mechanism (received data storage area) 67 in FIGS. 2 and 2 is a necessary means to implement the present invention.

Note that the same reference numerals indicate the same objects throughout the figures.

Hereinafter, a remote terminal control method using the local terminal simulator of the present invention will be explained with reference to FIG. 2 while referring to FIG.

First, the functions of each processing unit included in the local terminal simulator 6 of the present invention will be explained.

The local terminal simulator control processing unit 61 is a part that controls the entire local terminal simulator, and performs simulation start/end processing and abnormality processing.

The I10 reception CC-analysis unit 62 receives input/output processing requests from each virtual machine (V old operating system (OS) L and virtual machine monitor (VMM) 3, and reads channel command words (C
CW) and instructs each processing unit to perform a simulation operation.

The command conversion/data transmission/reception control unit 63 is an I10 reception CC.
- Converts the remote terminal system command code received from the analysis unit 62 into a local terminal system command code, and controls data transmission and reception.

In the data transfer/CCW simulation processing section 64,
The operating system (
OS) L and virtual machine monitor (VMM) 3, receiving data from the operating system (OS)
(2) Transfer data to virtual machine monitor (VMM) 3.

Also, data chains, skip operations, etc.
Perform a vomiting simulation.

The transmission request processing unit 65 accepts transmission requests from each processing unit and requests the data communication network management processing mechanism 7 to transmit to the remote terminal 9.

The reception reception processing unit 66 accepts reception requests from each processing unit and requests the data communication network management processing mechanism 7 to receive reception from the remote terminal 9.

Also, when the reception is completed, each processing unit is notified.

The received data storage area 67 is a necessary means to implement the present invention, and when an input/output instruction (SIO) is issued successively from the virtual machine monitor (VMM) 3 and the operating system (OS) 1. This area is used to store updated field information of the remote terminal that will be reflected in subsequent input/output commands.

The interrupt notification processing unit 68 is a virtual machine monitor (VMM).
3, and the operating system (OS) 1 issues an attention interrupt, a completion interrupt, etc.

The operation at the time of attention interruption in the local terminal simulator 6 equipped with each of the above-mentioned processing units will be explained in order.

(2) When the reception reception processing unit 66 completes the asynchronous data reception from the remote terminal 9, it notifies the command conversion/data transmission/reception control unit 63 of the completion of the asynchronous data reception.

■ The instruction conversion/data transmission/reception control unit 63 sends a virtual machine monitor (VMM) 3 to the interrupt notification processing unit 68.
Requests an attention interruption for.

■ The separate notification processing unit 68 uses the virtual machine monitor (V
MM) Notify attention interrupt to 3.

■ The virtual machine monitor (VMM) 3 that detected the attention interrupt issues an input/output instruction (SIO), reads the channel command word (CCW), and sends the attention to the local terminal simulator 6. Instructs to start input/output processing corresponding to an interrupt.

(2) The I10 reception CCTI analysis unit 62 receives the activation instruction, receives input/output processing from the virtual machine monitor (VMM) 3, and starts analyzing CC-.

The analysis information of the CCW is notified to the command conversion/data transmission/reception control section 63.

■ In the command conversion/data transmission/reception control unit 63, if the input/output command is °SIO' and the command is an update field read command (R/M),
The received data from the remote terminal 9 is saved in the received data storage area 67, and the data transfer/CCW simulation processing unit 64 is sent to the virtual computer monitor (V
MM) Request data transfer to 3.

■ Data transfer/CCW simulation processing unit 64
performs data transfer in order to pass the received data to the virtual machine monitor (VMM) 3. When the data transfer is completed, the instruction conversion/data transmission/reception control unit 63 is notified of the completion of the transfer process.

■ The instruction conversion/data transmission/reception control unit 63 requests an input/output completion interrupt notification from the interrupt notification processing unit 68 in order to notify the virtual machine monitor (VMM) 3 of the completion of the input/output operation related to the attention interrupt. .

■ The interrupt notification processing unit 68 uses a virtual machine monitor (VMM).
) Notify 3 of the input/output completion interrupt.

■ When the virtual machine monitor (VMM) 3 receives the input/output completion interrupt, it sends an attention notification to the operating system (OS) 1 of the virtual machine (VM) 2, which is the target of the input/output processing of the remote terminal 9. performs an attention interrupt for the purpose.

When the operating system (OS) 1 of the virtual machine (VM) 2 issues an input/output instruction (SIO) corresponding to the attention interrupt and sends out the corresponding CCW, the virtual machine monitor (VMM) 3 issues the corresponding CCW. The command is received, and the virtual machine monitor (VMM) 3 issues an instruction to the local terminal simulator to start input/output processing corresponding to the attention interrupt.

■I10 reception CC-analysis unit 62 receives the activation instruction,
It receives input/output processing from the virtual machine monitor (VMM) 3 and starts analyzing C(J. Then, the analysis information of the CCW is notified to the instruction conversion/data transmission/reception control unit 63.

■ If the notified input/output command is "SIO" and the command is an update field read command (R/M), the command conversion/data transmission/reception control unit 63:
Using the data stored in the received data storage area 67, the data transfer/CC-simulation processing unit 6
4 to request data transfer to the virtual machine monitor (VMM) 3.

■ Data transfer/CC-simulation processing unit 64
saves the above data to the virtual machine monitor (VM
M) Perform data transfer to pass to 3. When the data transfer is completed, the instruction conversion/data transmission/reception control unit 63 is notified of the completion of the transfer process.

[Phase] The instruction conversion/data transmission/reception control unit 63 releases the data in the received data storage area 67 and sends an interrupt notification processing unit to notify the virtual machine monitor (VMM) 3 of the completion of the input/output processing operation. 68 to request an input/output completion interrupt notification.

■ The interrupt notification processing unit 68 uses a virtual machine monitor (VMM).
) Notify 3 of the input/output completion interrupt.

When the virtual machine monitor (VMM) 3 receives the input/output completion interrupt, it notifies the operating system (OS) 1 of the virtual machine (VM) 2 of the personal output completion interrupt.

In this way, a series of input/output processing (attention interrupt processing) accompanying an asynchronous data transfer request generated by the remote terminal 9 is completed.

Therefore, according to the present invention, when performing attention interrupt processing associated with asynchronous data transfer from the remote terminal 6, the data communication line between the local terminal simulator and the remote terminal only needs to be used once for the first time. become.

In this way, the present invention allows input/output processing to be performed between the operating system (O8) of one virtual machine (VM) and a remote terminal, but it is possible to perform input/output processing between the operating system (O8) of one virtual machine (VM) and a remote terminal using a specific virtual machine (VM). A virtual machine monitor (VMM) that allocates a server (VM), provides a local terminal simulator and a data communication network management processing mechanism for the server, and does not have the above-mentioned communication function.

Alternatively, in a virtual computer system in which input/output processing to a local terminal simulator of the operating system (O8) of each virtual machine (VM) is performed via the virtual machine monitor (VMM) and server VM, the local A received data storage area is provided in the terminal simulator, and when there is an asynchronous input operation from a remote terminal, an attention interrupt is generated to the virtual machine monitor (VMM), and an input/output command is issued from the virtual machine monitor (VMM). (S10), reflect the received data and at the same time save the received data in the received data storage area. Next, the virtual calculation i (vM ) operating system (O
For input/output instructions (SIO) issued from S),
A feature of the present invention is that the usage rate of the data communication line during input operations from the remote terminal is reduced by reflecting the previously saved received data.

〔Effect of the invention〕

As described above in detail, the remote terminal control method using the local terminal simulator of the present invention is applicable to the remote terminal control method using the local terminal simulator of the present invention.
); and a local terminal connected to the virtual machine (VM) and controlled by the virtual machine monitor (VMM). Virtual machine (
V? In the server virtual machine (SVM), which is one of l),
A data communication network management processing mechanism and a local terminal simulator are provided, a communication control device is connected to a remote terminal via a data communication line under the data communication network management processing mechanism, and a remote terminal is connected to the virtual computer (VM).
between the operating system (OS) of the computer and the remote terminal via the local terminal simulator,
When performing input/output processing based on attention interrupts,
At the time when the key information is received from the remote terminal, the local terminal simulator starts the virtual machine monitor (
VMM), detects an input/output instruction (SIO) from the virtual machine monitor (VMM), and provides means for holding the key information at the time the key information is transferred. Virtual machine monitor (VM
When the local terminal simulator detects an input/output instruction (SIO) issued by the operating system (OS) of the virtual computation i (VM) in response to an attention interrupt from M), the holding means retains it. The key information sent to the operating system (OS) of the virtual machine (VM) is sent back to the operating system (OS) of the virtual machine (VM). This has the effect of significantly shortening line response time.

[Brief explanation of the drawing]

FIG. 1 is a principle block diagram of a remote terminal control method using a local terminal simulator according to the present invention. FIG. 2 is a diagram schematically showing an embodiment of the present invention. FIG. 3 is a diagram showing an example of the configuration of a general virtual computer system. FIG. 4 is a diagram showing the relationship between a local terminal and a virtual machine monitor (VMM). FIG. 5 is a diagram showing the positioning of the local terminal simulator. Figure 6 shows a conventional remote terminal and its operating diagram, where ■ is the operating system (OS). 2 is a virtual machine (VM). 3 is a virtual machine monitor (VM). 4 is server virtual computing a (SVM). 5 is the operating system (OS) of the server VM 6
is a local terminal simulator. 61 is a local terminal simulator control processing unit. 62 is the I10 reception CCW analysis department. 63 is an instruction conversion/data transmission/reception control unit. 64 is a data transfer/CCW simulation processing unit. 65 is a transmission request processing unit, and 66 is a reception reception processing unit. 67 is a received data storage area or data storage. 68 is an interrupt notification processing unit. 7 is the data communication network management processing authority (NCA)
. 8 is a communication control device, and 9 is a remote terminal. 91 is a terminal buffer, and 91a is an update field. 10 is a local terminal. sro is an input/output command. CC- is a channel command word. R2H is an update field read command. ■～■ are input/output operations. are shown respectively. 1,000 1 prisoner-i0. ．． Against this, I think of Sanmane's ``Sisura 4 no 7''
ri'j and o (tall threshold child 3 mouth local Tsubasamoto low sword Ru Naojohi 4 anti-wato strike Rei-tan monitor (shi MM) ■
4 or so (h figure 1000 4 figures

Claims (1)

[Claims] At least an operating system (OS) (1) of a plurality of virtual machines (VMs), and a virtual machine monitor (VMM) (3) that performs integrated control of the operating system (OS) (1). , connected corresponding to the virtual machine (VM), the virtual machine monitor (VMM) (3)
In a computer system consisting of a local terminal controlled by a server virtual machine (SVM) (4), which is one of the virtual machines (VM) mentioned above, a data communication network management processing mechanism (7) and a local terminal simulator ( 6), a communication control device (8) and a remote terminal (9) are connected to the data communication network management processing mechanism (7) via a data communication line, and the virtual machine (VM) operating system(
When performing input/output processing by attention interrupt between the OS) (1) and the remote terminal (9) via the local terminal simulator (6), the key information from the remote terminal (9) is received by the local terminal simulator (6), the virtual machine monitor (V
MM) (3), and the virtual machine monitor (VMM) (3) detects the attention interrupt and issues an input/output instruction (SIO) to the local terminal simulator (6). When detecting and transferring the key information received from the remote terminal (9) to the virtual machine monitor (VMM) (3),
Means (67) for holding the key information is provided, and when the virtual machine monitor (VMM) (3) completes the input/output processing due to the attention interrupt, the virtual machine monitor (VMM) (3) The above remote terminal (9)
An attention interrupt is made to the operating system (OS) (1) of the virtual machine (VM) that is the target of input/output processing, and the operating system (OS) (1) issues an input/output instruction (SIO) corresponding to the attention interrupt. When the local terminal simulator (6) detects that the key information holding means (67) has been issued, the key information held in the key information holding means (67) is transferred to the operating system (OS) (1) of the virtual machine (VM). A remote terminal control method using a local terminal simulator, which is characterized by controlling data to be transferred to a local terminal simulator.