Demultiplexing grouped events into virtual event queues while in two levels of virtualization
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United States of America Patent
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May 31, 2011
Grant Date -
Nov 22, 2007
app pub date -
May 17, 2006
filing date -
May 17, 2006
priority date (Note) -
In Force
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Abstract
A method, system, program product and computer data structure for providing for two levels of server virtualization. A first hypervisor enables multiple logical partitions to share a set of resources and provides a first level of virtualization. A second hypervisor enables multiple, independent virtual machines to share the resources that are assigned to a single logical partition and provides a second level of virtualization. All events for all of the virtual machines within said single logical partition are grouped into a single partition-owned event queue for receiving event notifications from the shared resources for that single logical partition. A request for an interrupt is signaled for the grouped events from the partition-owned event queue for the demultiplexing of grouped events, by the machine, from the partition-owned event queue into individual, virtualized event queues that are allocated on a per virtual machine basis.
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