Address translation apparatus in virtual machine system using a space identifier field for discriminating DATOFF (dynamic address translation off) virtual machines
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United States of America Patent
Stats
-
Jul 7, 1992
Grant Date -
N/A
app pub date -
Apr 3, 1989
filing date -
Apr 6, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An address translation apparatus is provided which has an address translation look-aside buffer with an entry composed of a real address field, virtual machine identifier field and space identifier field. For the translation look-aside buffer entry to be used by a general virtual machine which uses a plurality of address spaces, a virtual machine identifier for discrimination of a general virtual machine is stored in the virtual machine identifier field, and information used in discriminating an address space is stored in the space identifier field. For the translation look-aside buffer entry to be used by a dynamic address translation off (DATOFF virtual) machine which uses a single address space, an identifier commonly assigned to a group of DATOFF virtual machines is stored in the virtual machine identifier field, and a control block address used in discriminating a DATOFF virtual machine is stored in the space identifier field.
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