Virtual machine system with vitual machine resetting store indicating that virtual machine processed interrupt without virtual machine control program intervention
US5187802A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1989 |
| Grant date | Feb 16, 1993 |
| Priority date | — |
| Expiry date | Dec 18, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/45579
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a virtual machine system in which a virtual machine directly executes operations by use of the hardware without an intervention from the virtual machine control program (VMCP), at an occurrence of an input/output interruption, the system sets to a storage an event that the input/output interruption has been accepted and reserved by the VMCP. When the virtual machine processes interruption information by means of the hardware without an intervention of the VMCP, the virtual machine resets the state of the storage. When the virtual machine is set to an interruptible state, control is passed to the VMCP. The VMCP tests to determine whether or not the virtual machine has reset the state of the storage, thereby judging an acceptability of the interruption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.