Virtualizing a host USB adapter
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United States of America Patent
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Nov 29, 2016
Grant Date -
Jul 14, 2011
app pub date -
Jan 12, 2010
filing date -
Jan 12, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
Virtualizing a host USB adapter in a virtualized environment maintained by a hypervisor, the hypervisor administering one or more logical partitions, where virtualizing includes receiving, by the hypervisor from a logical partition via a logical USB adapter, a USB Input/Output (‘I/O’) request, the logical USB adapter associated with a USB device coupled to the host USB adapter; placing, by the hypervisor, a work queue element (‘WQE’) in a queue of a queue pair associated with the logical USB adapter; and administering, by an interface device in dependence upon the WQE, USB data communications among the logical partition and the USB device including retrieving, with direct memory access (‘DMA’), USB data originating at the USB device from the host USB adapter into a dedicated memory region for the logical USB adapter.
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