Electrical computers and digital processing systems: interprogra – Device driver communication – Device driver configuration
Reexamination Certificate
2008-06-03
2008-06-03
Thomson, William (Department: 2194)
Electrical computers and digital processing systems: interprogra
Device driver communication
Device driver configuration
C719S321000, C719S324000, C713S001000, C713S002000, C713S100000
Reexamination Certificate
active
07383555
ABSTRACT:
An I/O adapter sharing mechanism in a logically partitioned computer system allows sharing a network I/O adapter between logical partitions in an efficient manner. A first logical partition owns (or controls) the I/O adapter, and a second logical partition desires to use (or share) the I/O adapter. An I/O adapter device driver that includes a hardware interface is provided in the first logical partition. A virtual device driver is provided in the second logical partition that provides a set of functions that is at least partially defined by querying the I/O adapter device driver in the first logical partition. The I/O adapter sharing mechanism includes a transfer mechanism that allows data to be transferred directly from the virtual device driver in the second logical partition to the I/O adapter without passing through the I/O adapter device driver in the first logical partition.
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Billau Ronald Leroy
Graham Charles Scott
Kiel Harvey Gene
Mehta Chetan
Sendelbach Lee Anton
International Business Machines - Corporation
Martin & Associates
Pantoliano, Jr. Richard
Thomson William
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