Virtual machine system with vitual machine resetting store indic

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Details

Other Related Categories

395275, 395325, 364DIG1, 3642321, G06F 1314

Type

Patent

Status

active

Patent number

051878020

Description

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.

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patent: 4812967 (1989-03-01), Hirosawa et al.
patent: 4814975 (1989-03-01), Hirosawa et al.
patent: 4837674 (1989-06-01), Takane
patent: 4860190 (1989-08-01), Kaneda et al.
patent: 4885681 (1989-12-01), Umeno et al.
patent: 4887202 (1989-12-01), Tanaka et al.

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