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US 8,997,099 B2Granted
Virtualization event processing in a layered virtualization architecture
AssigneeIntel Corporation
InventorsSteven M. Bennett, Andrew V. Anderson, Gilbert Neiger, Dion Rodgers, Richard A. Uhlig, Lawrence O. Smith, Barry E. Huntley
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Abstract
Embodiments of apparatuses and methods for processing virtualization events in a layered virtualization architecture are disclosed. In one embodiment, an apparatus includes a event logic and evaluation logic. The event logic is to recognize a virtualization event. The evaluation logic is to determine whether to transfer control from a child guest to a parent guest in response to the virtualization event.
Claims2
A processor, comprising:
- an instruction decode logic to decode instructions;
- and
- an execution unit to execute the instructions, wherein execution of at least one instruction is to cause an interrupt;
- a first logic to determine whether the interrupt is a top-down virtualization event or a bottom-up virtualization event;
- a second logic to determine whether to transfer control of the processor from a first child guest to an intervening virtual machine monitor hosting the first child guest in response to the recognized virtualization event, by checking, if the virtualization event is recognized as a top-down virtualization event, a control structure of the first child guest before checking a control structure of the intervening virtual machine monitor hosting the first child guest, and by checking, if the virtualization event is recognized as a bottom-up virtualization event, the control structure of the intervening virtual machine monitor hosting the first child guest before checking the control structure of the first child guest.
2 more elements
Dependencies are inferred from the claim text.