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Variable-Sized System Queue Area in a Virtual Memory System

IP.com Disclosure Number: IPCOM000061353D
Original Publication Date: 1986-Jul-01
Included in the Prior Art Database: 2005-Mar-09

Publishing Venue

IBM

Related People

Authors:
Lang, TG O'Quin, JT Russell, RR [+details]

Abstract

A method is described which, in response to varying load on the Virtual Memory (VM) system, changes the amount of memory which can be addressed with the same address regardless of whether virtual address translation is enabled in the system. When the operating system of the Virtual Resource Manager (VRM) of the VM system requires an area of memory, known, for example, as System Queue Area (SQA) for allocating control blocks to represent resources, the SQA must have the attribute that its virtual address equals its real address, so that the control blocks may be accessed regardless of whether virtual address translation is enabled. In response to changes in system load, the size of SQA required may change drastically.