System and method for controlling switching between VMM and VM using enabling value of VMM timer indicator and VMM timer value having a specified time
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United States of America Patent
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Nov 23, 2010
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app pub date -
Sep 30, 2004
filing date -
Sep 30, 2004
priority date (Note) -
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Abstract
In one embodiment, a method includes transitioning control to a virtual machine (VM) from a virtual machine monitor (VMM), determining that a VMM timer indicator is set to an enabling value, and identifying a VMM timer value configured by the VMM. The method further includes periodically comparing a current value of a timing source with the VMM timer value, generating an internal event if the current value of the timing source has reached the VMM timer value, and transitioning control to the VMM in response to the internal event without incurring an event handling procedure in any one of the VMM and the VM.
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