发明名称 |
Method for user space operations for direct I/O between an application instance and an I/O adapter |
摘要 |
The present invention provides a method that enables application instances to pass block mode storage requests directly to a physical I/O adapter without run-time involvement from either the local operating system or hypervisor. In one aspect of the present invention, a mechanism is provided for determining whether a user space operation is a resource management operation of a work processing operation. If the user space operation is a resource management operation, appropriate functions are performed to either query, create, modify or destroy resource allocations in the I/O adapter. If the user space operation is a work processing operation, appropriate functions are performed to create work queue entries and inform the I/O adapter of the work queue entries and to retrieve completion queue entries for work queue entries whose processing has been completed by the I/O adapter.
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申请公布号 |
US7552240(B2) |
申请公布日期 |
2009.06.23 |
申请号 |
US20050135542 |
申请日期 |
2005.05.23 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BOYD WILLIAM TODD;HUFFERD JOHN LEWIS;MENA, III AGUSTIN;RECIO RENATO JOHN;VEGA MADELINE |
分类号 |
G06F3/00;G06F13/12;G06F13/28;G06F13/38 |
主分类号 |
G06F3/00 |
代理机构 |
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地址 |
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