The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 09, 1995
Filed:
Jun. 15, 1992
Frank W Brice, Jr, Hurley, NY (US);
Joseph C Elliott, Hopewell Junction, NY (US);
Kenneth J Fredericks, Poughkeepsie, NY (US);
Robert E Galbraith, Poughkeepsie, NY (US);
Marten J Halma, Poughquag, NY (US);
Roger E Hough, Highland, NY (US);
Suzanne M John, Poughkeepsie, NY (US);
Paul A Malinowski, Poughkeepsie, NY (US);
Allan S Meritt, Poughkeepsie, NY (US);
Kenneth J Oakes, Wappingers Falls, NY (US);
John C Rathjen, Jr, Rhinebeck, NY (US);
Martin W Sachs, Westport, CT (US);
David E Stucki, Poughkeepsie, NY (US);
Leslie W Wyman, Poughkeepsie, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
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), and control units (CUs). The invention provides image identifiers (IIDs) for assigning resources to the different OSs. Each shared I/O resource has a sharing set of control blocks (CBs) in which a respective CB is assigned to (and located by) a respective IID of one of the OSs. Each of the CBs in a sharing set provides a different image of the same I/O resource. The different CB images are independently set to different states by I/O operations for the different OSs, so that the OSs can independently share the same I/O resource.