Storage isolation employing secured subspace facility

Details Storage isolation employing secured subspace facility Storage isolation employing secured subspace facility

2005-12-13

2005-12-13

Lee, Thomas (Department: 2126)

Electrical computers and digital processing systems: virtual mac

Task management or control

C711S206000

Reexamination Certificate

active

06976255

ABSTRACT:
A secured subspace facility is provided for ensuring isolated storage for transactions running under an operating system main task. Isolation is achieved by attaching, from an operating system task, subtasks that will restrict application addressing. The attaching includes defining a subspace address environment as home space within a dispatchable unit access list (DU-AL) associated with each attached subtask. Multiple subtasks can be attached with each subtask running applications in an isolated address subspace, notwithstanding execution of the applications in address register addressing mode.

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Hagimont, D., et al., “Protection in an Object-Oriented Distributed Virtual Machine,” IEEE, Object Orientation in Operating Systems, 1992, pp. 273-277.

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