Method for virtual resource initialization on a physical adapter that supports virtual resources
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United States of America Patent
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Jun 9, 2009
Grant Date -
Aug 31, 2006
app pub date -
Feb 25, 2005
filing date -
Feb 25, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
A method for directly sharing a network stack offload I/O adapter that directly supports resource virtualization and does not require a LPAR manager or other intermediary to be invoked on every I/O transaction is provided. The present invention also provides a method, computer program product, and distributed data processing system for directly creating and initializing one or more virtual resources that reside within a physical adapter, such as a PCI, PCI-X, or PCI-E adapter, and that are associated with a virtual host. Specifically, the present invention is directed to a mechanism for sharing conventional PCI (Peripheral Component Interconnect) I/O adapters, PCI-X I/O adapters, PCI-Express I/O adapters, and, in general, any I/O adapter that uses a memory mapped I/O interface for host to adapter communications. A mechanism is provided for directly creating and initializing one or more virtual resources that reside within a physical adapter, such as a PCI, PCI-X, or PCI-E adapter, and that are associated with a virtual host.
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