Electrical computers and digital data processing systems: input/ – Input/output data processing
Reexamination Certificate
2005-05-23
2009-06-23
Patel, Niketa I (Department: 2181)
Electrical computers and digital data processing systems: input/
Input/output data processing
C710S022000, C710S062000, C710S065000
Reexamination Certificate
active
07552240
ABSTRACT:
The present invention provides a method that enables application instances to pass block mode storage requests directly to a physical I/O adapter without run-time involvement from either the local operating system or hypervisor. In one aspect of the present invention, a mechanism is provided for determining whether a user space operation is a resource management operation of a work processing operation. If the user space operation is a resource management operation, appropriate functions are performed to either query, create, modify or destroy resource allocations in the I/O adapter. If the user space operation is a work processing operation, appropriate functions are performed to create work queue entries and inform the I/O adapter of the work queue entries and to retrieve completion queue entries for work queue entries whose processing has been completed by the I/O adapter.
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Boyd William Todd
Hufferd John Lewis
Mena III Agustin
Recio Renato John
Vega Madeline
Dews Brooke J
International Business Machines - Corporation
Lammes Francis
Patel Niketa I
Salys Casimer K.
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