1
Frank W Brice Jr, Joseph C Elliott, Kenneth J Fredericks, Robert E Galbraith, Marten J Halma, Roger E Hough, Suzanne M John, Paul A Malinowski, Allan S Meritt, Kenneth J Oakes, John C Rathjen Jr, Martin W Sachs, David E Stucki, Leslie W Wyman: Method and means for sharing I/O resources by a plurality of operating systems. International Business Machines Corporation, Bernard M Goldman, May 9, 1995: US05414851 (150 worldwide citation)

Provides a method for increasing the connectivity of I/O resources to a multiplicity of operating systems (OSs) running in different resource partitions of a computer electronic complex (CEC) to obtain sharing of the I/O resources among the OSs of the CEC, including channels, subchannels (devices), ...


2
Richard Cwiakala, Eugene P Hefferon, Kenneth J Oakes, Allen H Preston, David E Stucki, Leslie W Wyman, Harry M Yudenfriend: Dynamically changing a system I/O configuration definition. International Business Machines, Floyd A Gonzalez, December 8, 1992: US05170472 (146 worldwide citation)

A mechanism for changing the system I/O configuration definition in the channel subsystem of a data processing system without having to do a power on reset operation. The data processing system includes one or more central processing units, an I/O processor, a storage addressable by the central proc ...


3
Richard Cwiakala, Jeffrey D Haggar, Charles E Shapley, Timothy J Spewak, David E Stucki, Harry M Yudenfriend: Establishing synchronization of hardware and software I/O configuration definitions. International Business Machines Corporation, Floyd A Gonzalez, October 26, 1993: US05257379 (63 worldwide citation)

A data processing I/O system having a main storage for storing data including a software configuration definition and data processing instructions arranged in programs including an operating system, a storage device for storing I/O definition files including hardware configuration information, a pro ...


4
Robert E Galbraith, Steven G Glassen, Assaf Marron, Kenneth J Oakes, David E Stucki, Leslie W Wyman: Channel measurement method and means. International Business Machines Corporation, Bernard M Goldman, November 23, 1993: US05265240 (63 worldwide citation)

Provides a method for measuring the busy utilization time for I/O channel used by any of plural operating systems (OSs) in a CEC. The measured utilization time for any OS excludes the time shared channels are utilized by other OSs during a measurement period. A channel measurement facility (CMF) is ...


5
Jonel George, Roger E Hough, Moon J Kim, Allen H Preston, David E Stucki, Charles F Webb: Method of using small addresses to access any guest zone in a large memory. International Business Machines Corporation, Bernard M Goldman, December 6, 1994: US05371867 (21 worldwide citation)

Enables a host (hypervisor) to access any location in any guest zone in a large memory, when host and guest operands have small addresses that cannot access locations outside of their own zones. System hardware/microcode provides a particular number of windows for host use. Each CPU in the system ha ...


6
John L Burk, Justin R Butwell, Carl E Clark, John T Rodell, David E Stucki: Storage fetch protect override controls. International Business Machines Corporation, Bernard M Goldman, September 18, 1984: US04472790 (15 worldwide citation)

The embodiment provides selective supervisory disablement of fetch protection for a special storage subarea (such as for the first half of the first 4KB block) while fetch protection is enabled for an area containing the subarea by a single storage protect key. That is, the fetch protect for the sub ...