Boots – shoes – and leggings
Patent
1987-07-29
1989-06-27
Chan, Eddie P.
Boots, shoes, and leggings
3642816, G06F 1516
Patent
active
048435414
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.
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Bean George H.
Borden Terry L.
Farrell Mark S.
Gum Peter H.
Hough Roger E.
Chan Eddie P.
Goldman Bernard M.
International Business Machines - Corporation
Kulik Paul
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