Controlling resource transfers in a logically partitioned computer system
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United States of America Patent
Stats
-
Mar 9, 2010
Grant Date -
Aug 7, 2008
app pub date -
Apr 7, 2008
filing date -
Mar 13, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A resource and partition manager of the preferred embodiments includes a lock mechanism that operates on a plurality of locks that control access to individual I/O slots. The resource and partition manager uses the lock mechanism to obtain a lock on an I/O slot when transferring control of the I/O slot to a logical partition that is powering on and when removing the I/O slot from a logical partition that is powering off. The resource and partition manager uses the lock mechanism to remove control of an I/O slot from, or return control to, an operating logical partition in order to facilitate hardware service operations on that I/O slot or on the physical enclosure in which it is contained.
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