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:
Jun. 27, 1989
Filed:
Jul. 29, 1987
George H Bean, Kingston, NY (US);
Terry L Borden, Poughkeepsie, NY (US);
Mark S Farrell, Pleasant Valley, NY (US);
Peter H Gum, Poughkeepsie, NY (US);
Roger E Hough, Highland, NY (US);
Francis E Johnson, Poughkeepsie, NY (US);
Donald W McCauley, Hopewell Junction, NY (US);
Mark E Rakhmilevich, Kingston, NY (US);
John C Rathjen, Rhinebeck, NY (US);
Casper A Scalzi, Poughkeepsie, NY (US);
John F Scanlon, Hyde Park, NY (US);
Leslie W Wyman, Poughkeepsie, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
The embodiment discloses a method and means for partitioning the resources in a data processing system into a plurality of logical partitions. Host control code may be embodied in programming, microcode, or by special hardware to enable highly efficient operation of a plurality of preferred guest programming systems in the different partitions of the system. The main storage, expanded storage, the channel, and subchannel resources of a system are assigned to the different logical partitions in the system to enable a plurality of preferred guest programming systems to run simultaneously in the different partitions. This invention automatically relocates the absolute addresses of the I/O channel and subchannel resources in the system to their assigned partitions. Also the absolute and virtual addresses of the different guest programming systems are relocated into, as well as page addresses for any expanded storage, their assigned partitions. The guest programming systems generally will be different operating systems. The logical CPU(s) of the guests are dispatched on one or plural real CPUs in the system using the S/370XA SIE (start interpretive execution) instruction. Special operations are provided, including the CPU alerting of other guests in different partitions using I/O interruption signalling. Interception is provided to handle special circumstances.