1
Ugochukwu Njoku
Ugochukwu Charles Njoku, Frank W Brice Jr, David Craddock, Richard K Errickson, Mark S Farrell, Charles W Gainey Jr, Donald W Schmidt, Gustav E Sittmann III: Virtualization of an I/O adapter port using enablement and activation functions. International Business Machines Corporation, Eugene I Shkurko, April 3, 2007: US07200704 (91 worldwide citation)

A method for configuring a communication port of a communications interface of an information handling system into a plurality of virtual ports. A first command is issued to obtain information indicating a number of images of virtual ports supportable by the communications interface. A second comman ...


2
Ugochukwu Njoku
Ugochukwu Charles Njoku, Frank W Brice Jr, David Craddock, Richard K Errickson, Mark S Farrell, Charles W Gainey Jr, Donald W Schmidt, Gustav E Sittmann III: Information handling system with virtualized I/O adapter ports. International Business Machines Corporation, John E Campbell, October 20, 2009: US07606965 (41 worldwide citation)

A communication port of a communications interface of an information handling system comprises a plurality of virtual ports. A first command is issued to obtain information indicating a number of images of virtual ports supportable by the communications interface. A second command is then issued req ...


3
Ugochukwu Njoku
Janet R Easton, Charles W Gainey Jr, Tan Lu, Ugochukwu C Njoku, Gustav E Sittmann III, Stephen G Wilkins, Frank W Brice Jr, Damian L Osisek, Donald W Schmidt: Demultiplexing grouped events into virtual event queues while in two levels of virtualization. International Business Machines Corporation, Cantor Colburn, Steven Chiu, May 31, 2011: US07954099 (4 worldwide citation)

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 virt ...


4
Ugochukwu Njoku
Daniel F Casper, Mark P Bendyk, John R Flanagan, Catherine C Huang, Matthew J Kalos, Ugochukwu C Njoku, Dale F Riedy, Gustav E Sittmann III, Harry M Yudenfriend: Providing indirect data addressing in an input/output processing system where the indirect data address list is non-contiguous. International Business Machines Corporation, Cantor Colburn, Steven Chiu, May 26, 2015: US09043494 (1 worldwide citation)

A method includes configuring a processing circuit to perform: receiving a control word for an I/O operation, forwarding a transport command control block (TCCB) from the channel subsystem to a control unit, gathering data associated with the I/O operation, and transmitting the gathered data to the ...


5
Private
Susan K Candelaria, Scott M Carlson, Daniel F Casper, John R Flanagan, Roger G Hathorn, Matthew J Kalos, Louis W Ricci, Dale F Riedy, Gustav E Sittmann III: Facilitating transport mode input/output operations between a channel subsystem and input/output devices. International Business Machines Corporation, Cantor Colburn, Steven Chiu, October 1, 2013: US08549185

A computer program product is provided for performing an input/output (I/O) processing operation at a host computer system. The computer program product is configured to perform: obtaining a transport command word (TCW) at a channel subsystem for an I/O operation, the TCW including an address of a t ...


6
Private
Susan K Candelaria, Scott M Carlson, Daniel F Casper, John R Flanagan, Roger G Hathorn, Matthew J Kalos, Louis W Ricci, Dale F Riedy, Gustav E Sittmann III, Cynthia Sittmann: Facilitating transport mode input/output operations between a channel subsystem and input/output devices. International Business Machines Corporation, January 3, 2013: US20130007303-A1

A computer program product is provided for performing an input/output (I/O) processing operation at a host computer system. The computer program product is configured to perform: obtaining a transport command word (TCW) at a channel subsystem for an I/O operation, the TCW including an address of a t ...


7
Charles W Gainey Jr, Dan F Greiner, Lisa Cranton Heller, Damian L Osisek, Gustav E Sittmann III: Optimizations of a perform frame management function issued by pageable guests. International Business Machines Corporation, John E Campbell, Blanche E Schiller Esq, Heslin Rothenberg Farley & Mesiti P C, December 27, 2011: US08086811 (14 worldwide citation)

Optimizations are provided for frame management operations, including a clear operation and/or a set storage key operation, requested by pageable guests. The operations are performed, absent host intervention, on frames not resident in host memory. The operations may be specified in an instruction i ...


8
David Craddock, Janet R Easton, Mark S Farrell, Thomas A Gregg, Damian L Osisek, Donald W Schmidt, Gustav E Sittmann III: Identification of types of sources of adapter interruptions. International Business Machines Corporation, John E Campbell, Blanche E Schiller Esq, Heslin Rothenberg Farley & Mesiti P C, August 6, 2013: US08504754 (8 worldwide citation)

A source identification facility is provided that enables identification of the one or more types of adapters requesting an interrupt in order to facilitate processing of the interrupt. The adapter types are accessible to the operating system and are used to tailor processing by the operating system ...


9
Charles W Gainey Jr, Dan F Greiner, Lisa Cranton Heller, Damian L Osisek, Gustav E Sittmann III, Cynthia Sittmann legal representative: Clearing guest frames absent paging-in to host main storage. International Business Machines Corporation, John E Campbell, Blanche E Schiller Esq, Heslin Rothenberg Farley & Mesiti P C, August 7, 2012: US08239649 (7 worldwide citation)

Optimizations are provided for frame management operations, including a clear operation and/or a set storage key operation, requested by pageable guests. The operations are performed, absent host intervention, on frames not resident in host memory. The operations may be specified in an instruction i ...


10
Charles W Gainey Jr, Dan F Greiner, Lisa C Heller, Damian L Osisek, Gustav E Sittmann III: Execution of a perform frame management function instruction. International Business Machines Corporation, William A Kinnaman Jr Esq, Blanche E Schiller Esq, Heslin Rothenberg Farley & Mesiti P C, January 13, 2015: US08935504 (6 worldwide citation)

Optimizations are provided for frame management operations, including a clear operation and/or a set storage key operation, requested by pageable guests. The operations are performed, absent host intervention, on frames not resident in host memory. The operations may be specified in an instruction i ...



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