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Private Ugochukwu Njoku
Scott M Carlson, Daniel F Casper, John R Flanagan, Charles W Gainey, Roger G Hathorn, Catherine C Huang, Matthew J Kalos, Ugochukwu Charles Njoku, Louis C Ricci, Gustav E Sittmann: Exception condition handling at a channel subsystem in an I/O processing system. International Business Machines Corporation, Cantor Colburn, John Campbell, January 10, 2012: US08095847

A computer program product, apparatus, and method for handling exception condition feedback at a channel subsystem of an I/O processing system using data from a control unit are provided. The computer program product includes a tangible storage medium readable by a processing circuit and storing ins ...


2
Private Ugochukwu Njoku
Scott M Carlson, Daniel F Casper, John R Flanagan, Charles W Gainey, Roger G Hathorn, Catherine C Huang, Matthew J Kalos, Ugochukwu Charles Njoku, Louis C Ricci, Gustav E Sittmann: Exception condition determination at a control unit in an I/O processing system. International Business Machines Corporation, Cantor Colburn, John Campbell, March 29, 2011: US07917813

A computer program product, apparatus, and method for providing exception condition feedback at a control unit to a channel subsystem in an I/O processing system are provided. The computer program product includes a tangible storage medium readable by a processing circuit and storing instructions fo ...


3
Private Ugochukwu Njoku
Scott M Carlson, Daniel F Casper, John R Flanagan, Charles W Gainey, Roger G Hathorn, Catherine C Huang, Matthew J Kalos, Ugochukwu C Njoku, Louis W Ricci, Gustav E Sittmann: Exception condition determination at a control unit in an i/o processing system. International Business Machines Corporation, Cantor Colburn IBM Poughkeepsie, August 20, 2009: US20090210584-A1

A computer program product, apparatus, and method for providing exception condition feedback at a control unit to a channel subsystem in an I/O processing system are provided. The computer program product includes a tangible storage medium readable by a processing circuit and storing instructions fo ...


4
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 ...


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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 ...


7
Ugochukwu Njoku
Frank W Brice Jr, Janet R Easton, Charles W Gainey Jr, Jeffrey P Kubala, Hans Helge Lehmann, Tan Lu, Ugochukwu Njoku Charles, Kenneth J Oakes, Dale F Riedy Jr, Charles E Shapley, Gustav E Sittmann, Leslie W Wyman, Harry M Yudenfriend: Managing sets of input/output communications subadapters of an input/output subsystem. International Business Machines Corporation, Eugene I Shkurko Esq, Blanch E Schiller Esq, Heslin Rothenberg Farley & Mesiti P C, October 2, 2007: US07277968 (35 worldwide citation)

Input/output (I/O) communications subadapters, such as subchannels, of an I/O subsystem are dedicated to components, such as I/O devices, of the I/O subsystem. The subadapters provide information about the associated components, in response to the execution of I/O instructions. To enhance I/O connec ...


8
Ugochukwu Njoku
David Craddock, Charles W Gainey Jr, Beth A Glendening, Thomas A Gregg, Ugochukwu C Njoku: Operating system notification of actions to be taken responsive to adapter events. International Business Machines Corporation, John E Campbell, Blanche E Schiller Esq, Heslin Rothenberg Farley & Mesiti P C, August 6, 2013: US08505032 (12 worldwide citation)

Notification of hardware actions to be taken responsive to hardware events is facilitated. An operating system coupled, but external to, the hardware notifies firmware of the hardware action to be taken.


9
Ugochukwu Njoku
Anthony F Coneski, David Craddock, Charles W Gainey Jr, Beth A Glendening, Thomas A Gregg, Ugochukwu C Njoku, Peter K Szwed: Managing processing associated with hardware events. International Business Machines Corporation, John E Campbell, Blanche E Schiller Esq, Heslin Rothenberg Farley & Mesiti P C, August 13, 2013: US08510599 (4 worldwide citation)

Detection, notification and/or processing of events, such as errors associated with adapters, are facilitated. Hardware detects an event, places one or more adapters in an error state to prevent access to/from the adapters, and notifies the operating system of the event.


10
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 ...



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