| 摘要 |
To simplify the structure and improve the performance of virtualization software. There is provided virtualization unit for capturing a configuration access to a physical device from a virtual CPU, identifying a partition to which the physical device belongs from a device address of the physical device accessed by the virtual CPU, and if the physical device does not belong to the virtual CPU's own partition, replacing a content of a configuration register that identifies the physical device with information on a nonexistent dummy device, and notifying the resultant to the virtual CPU. The physical device not belonging to the virtual CPU's own partition is recognized as a named valid device by using a dummy device driver corresponding to the dummy device. The dummy device driver rejects execution of processing common to all physical devices that is requested by the virtual CPU and disturbs operation of a physical device belonging to another partition.
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