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Virtualization event processing in a layered virtualization architecture

  • US 8,271,978 B2
  • Filed: 08/18/2010
  • Issued: 09/18/2012
  • Est. Priority Date: 07/27/2005
  • Status: Active Grant
First Claim
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1. A method of processing events in a layered virtualization architecture, comprising:

  • recognizing a virtualization event as a top-down virtualization event or a bottom-up virtualization event;

    checking a control structure of a child guest before checking a control structure of an intervening virtual machine monitor hosting the child guest if the virtualization event is recognized as a top-down virtualization event;

    checking a control structure of the intervening virtual machine monitor hosting the child guest before checking the control structure of the child guest if the virtualization event is recognized as a bottom-up virtualization event; and

    determining whether to transfer control from the child guest to the intervening virtual machine monitor hosting the child guest in response to the recognized virtualization event.

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