04843541 is referenced by 299 patents and cites 6 patents.

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.

Title
Logical resource partitioning of a data processing system
Application Number
7/79314
Publication Number
4843541
Application Date
July 29, 1987
Publication Date
June 27, 1989
Inventor
Leslie W Wyman
Poughkeepsie
NY, US
John F Scanlon
Hyde Park
NY, US
Casper A Scalzi
Poughkeepsie
NY, US
John C Rathjen
Rhinebeck
NY, US
Mark E Rakhmilevich
Kingston
NY, US
Donald W McCauley
Hopewell Junction
NY, US
Francis E Johnson
Poughkeepsie
NY, US
Roger E Hough
Highland
NY, US
Peter H Gum
Poughkeepsie
NY, US
Mark S Farrell
Pleasant Valley
NY, US
Terry L Borden
Poughkeepsie
NY, US
George H Bean
Kingston
NY, US
Agent
Bernard M Goldman
Assignee
International Business Machines Corporation
NY, US
IPC
G06F 15/16
View Original Source