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System for recovery from a virtual machine monitor failure with a continuous guest dispatched to a nonguest mode

  • US 5,437,033 A
  • Filed: 11/04/1991
  • Issued: 07/25/1995
  • Est. Priority Date: 11/16/1990
  • Status: Expired due to Fees
First Claim
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1. A system for recovery from a virtual machine monitor failure of a virtual machine system having operation modes including a guest mode in which virtual machines are operated and a nonguest mode in which a virtual machine monitor for controlling said virtual machines is operated, the system comprising:

  • a main storage which is connected with said virtual machine system including,a continuous guest area having the same host absolute address as a guest absolute address, and being occupied by a continuous guest virtual machine which continues to operate even if a failure due to a program error of said virtual machine monitor has occurred, andan area in which is stored a program module for dispatching said continuous guest virtual machine in the nonguest mode in response to detection of said failure;

    means for allocating said continuous guest virtual machine to said guest area;

    means for detecting the occurrence of said failure due to said program error of said virtual machine monitor; and

    means for starting said program module for dispatching said continuous guest virtual machine in response to the detection of the occurrence of said failure by said detecting means.

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