International Business Machines Corporation

Steven Messinger

Jeffrey Paul Kubala

Leslie W Wyman

Janet R Easton

Richard P Tarcza

Frank William Brice

Roger E Hough

Ira Glenn Siegel

Michael Burrill Phillips

Karen Udy Chang

Method and means to provide a mechanism by which a hypervisor can permit a real machine to interpretively execute certain I/O instructions independently of the value of an I-bit in the subchannel. This is necessary as the I-bit covers all I/O instructions that can be interpretively executed; however, there can be instances where the hypervisor cannot allow the interpretive execution of other I/O instructions but can permit the interpretive execution of the SIGA instruction.

Method and means for enhanced interpretive instruction execution for a new integrated communications adapter using a queued direct input-output device

A method of replacing a current version of a program module with a replacement version of the module concurrently with the execution of the program on a computer system. For each entry point within the current version of said module to which the program may make address reference, a corresponding entry point within the replacement version of the module is determined. While execution of the program is suspended, each address reference in the program to an entry point within the current version of the module is replaced with an address reference to the corresponding entry point within the replacement version of the module. Execution of the program is resumed when each address reference to the current module has been replaced with one to the replacement module.

Concurrent patch to logical partition manager of a logically partitioned system

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Poughkeepsie, NY, United States of America

Steven Messinger