JPS6459434A - Input/output control system for virtual computer - Google Patents
Input/output control system for virtual computerInfo
- Publication number
- JPS6459434A JPS6459434A JP62216170A JP21617087A JPS6459434A JP S6459434 A JPS6459434 A JP S6459434A JP 62216170 A JP62216170 A JP 62216170A JP 21617087 A JP21617087 A JP 21617087A JP S6459434 A JPS6459434 A JP S6459434A
- Authority
- JP
- Japan
- Prior art keywords
- input
- output
- guest
- instruction
- output instruction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/46—Multiprogramming arrangements
- G06F9/48—Program initiating; Program switching, e.g. by interrupt
- G06F9/4806—Task transfer initiation or dispatching
- G06F9/4843—Task transfer initiation or dispatching by program, e.g. task dispatcher, supervisor, operating system
Landscapes
- Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
Abstract
PURPOSE:To efficiently execute instructions by providing each subchannel with an information block having an input/output instruction direct execution flag, which indicates whether the subchannel is monopolized by a guest or not, and a guest identifier which indicates the monopolizing guest. CONSTITUTION:When an input/output instruction is issued from one of guests 1-3, an input/output instruction processing mechanism 120 checks one of information blocks 11-13 which is related to the subchannel designated by the input/output instruction. If an input/output direct instruction execution flag DIOF of this information block indicates monopolization and a guest identifier GID coincides with the identifier of the guest of the instruction issue source, the guest of the instruction issue source is caused to directly execute the input/ output issue source is caused to directly execute the input/output instruction. If the input/output instruction direct execution flag DIOF of the information block does not indicate monopolization, processing to take out the indicate monopolization, processing to take out the input/output instruction to a host 10 is performed. Thus, input/output instructions and TPI instructions which guests issue are efficiently executed to reduce the overhead.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62216170A JPS6459434A (en) | 1987-08-29 | 1987-08-29 | Input/output control system for virtual computer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62216170A JPS6459434A (en) | 1987-08-29 | 1987-08-29 | Input/output control system for virtual computer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6459434A true JPS6459434A (en) | 1989-03-07 |
Family
ID=16684383
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62216170A Pending JPS6459434A (en) | 1987-08-29 | 1987-08-29 | Input/output control system for virtual computer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6459434A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020505668A (en) * | 2017-01-19 | 2020-02-20 | インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Machines Corporation | Pending external interrupt test instruction |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60142429A (en) * | 1983-12-28 | 1985-07-27 | Hitachi Ltd | Method and apparatus for executing input/output of virtual computer system |
-
1987
- 1987-08-29 JP JP62216170A patent/JPS6459434A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60142429A (en) * | 1983-12-28 | 1985-07-27 | Hitachi Ltd | Method and apparatus for executing input/output of virtual computer system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020505668A (en) * | 2017-01-19 | 2020-02-20 | インターナショナル・ビジネス・マシーンズ・コーポレーションInternational Business Machines Corporation | Pending external interrupt test instruction |
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