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ESA/390 interpretive-execution architecture, foundation for VM/ESA

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3 Author(s)
Osisek, D.L. ; IBM Data Systems Division, P.O. Box 6, Endicott, New York 13760, USA ; Jackson, K.M. ; Gum, P.H.

The interpretive-execution facility of Enterprise Systems Architecture/390™ (ESA/390™) provides an instruction for the execution of virtual machines. This instruction, called START INTERPRETIVE EXECUTION (SIE), was initially created for virtualizing either System/370 or 370-XA architectures, and was used later for virtualizing ESA/370™ and ESA/390 architectures. SIE has evolved to provide capabilities for a number of specialized performance environments. Most recently it provides for the unique requirements of Enterprise Systems Architecture/Extended Configuration (ESA/XC) virtual-machine architecture. This comprehensive set of capabilities in the architecture serves as the platform for the ability of VM/ESA™ to provide functions in virtual machines for end users and system servers. This paper describes the evolution of SIE and outlines use of the various capabilities in VM/ESA.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

Published in:

IBM Systems Journal  (Volume:30 ,  Issue: 1 )