Virtual machine system which translates virtual address from a s

Details Virtual machine system which translates virtual address from a s Virtual machine system which translates virtual address from a s

1988-12-08

1991-12-31

Lee, Thomas C.

Boots, shoes, and leggings

3642563, 3642282, 3649781, 364978, 364DIG1, 364DIG2, G06F 1210, G06F 944

Patent

active

050776541

ABSTRACT:
A virtual machine system for executing fast speed address translation in plural virtual machines having a two-stage address translation mechanism. The system permits address translation to be executed by adding to an output from a first address translation address constants in a hold apparatus holding address constants including zero, executing a second address translation, and selecting an output from the first address translation to which the address constants have been added or an output from the second address translation. An address translation for a plurality of different regions is performed by switching a value for the address constants held by the hold apparatus.

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P. H. Gum, "System/370 Extended Architecture: Facilities for Virtual Machines", IBM Journal of Research and Development, vol. 27, No. 6, pp. 529-544, Nov. 1983.

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