Input/output completion system and method for a data processing platform

A data processing system, comprising:

• an operating system to allocate memory to one or more queue banks, each of which is dedicated for use in performing I/O operations;
• partitioning logic coupled to the operating system to manage a processing partition in which the queue banks are being used;
• and
• return queue logic coupled to the partitioning logic to determine, after a queue bank is used to perform an I/O operation, whether any portion of memory allocated to the queue bank is memory to be removed from the processing partition, and if not, to make the queue bank available for immediate re-use in performing another I/O operation, and otherwise, to delay re-use of the queue bank.

A data processing system, comprising:

• operating system means for allocating memory to at least one queue bank means within a processing partition, each of the at least one queue bank means for use in performing I/O operations;
• available queue means for making each of the at least one queue bank means available for use in performing the I/O operations;
• and
• return means for returning any of the at least one queue banks means to the available queue means after the queue bank means has been used to complete an I/O operation, whereby the queue bank means is returned to a first end of the available queue means if the queue bank means does not include memory being removed from the processing partition, and otherwise, the queue bank means is returned to a second end of the available queue means.

Media storing instructions to cause a data processing system to perform a method, comprising:

• allocating memory to multiple queue banks within a first one of multiple processing partitions supported by the data processing system;
• using the multiple queue banks to perform I/O operations;
• selecting memory to be removed from the first of the processing partitions;
• and
• as each of the queue banks potentially becomes available for re-use, determining whether the queue bank contains any of the selected memory, and if so, delaying re-use of the queue bank, and otherwise, making the queue bank available for immediate re-use.