Boots – shoes – and leggings
Patent
1995-01-25
1996-11-12
Bowler, Alyssa H.
Boots, shoes, and leggings
395406, 3642282, 364DIG1, G06F 1200
Patent
active
055749364
ABSTRACT:
An access control apparatus in a computer system for controlling access to an ALB. A host ALBID register and a guest ALBID register is provided for storing a host and a guest ALB identifier (ALBID) and a host and a guest ALBID validity indicator. Control State Software generates and stores the host and guest ALBIDs in the host and guest ALBID registers and marks valid the host and guest ALBID validity indicator whenever a host or guest mode is initiated or a logical purge is requested by a logical processor and for storing the host or guest ALBID stored in the host and guest ALBID registers when an ALB entry is made in the ALB by a logical processor. Access to an ALB entry by a logical processor is permitted when the logical processor is in the host mode if the ALBID in the ALB entry matches the host ALBID stored and the valid indicator is marked valid in the host ALBID register and when the logical processor is in the guest mode if the ALBID in the ALB entry matches the guest ALBID stored and the valid indicator is marked valid in the guest ALBID register. A host logical purge is accomplished by marking invalid the host and guest validity indicators in the host and guest ALBID registers. A guest Logical purge is accomplished by marking invalid the guest validity indicator in the guest ALBID register.
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Connell Jefferson J.
Lipman Peter H.
Ryba Edward G.
Weiss David
Amdahl Corporation
Bowler Alyssa H.
Harrity John
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