| 摘要 |
PROBLEM TO BE SOLVED: To realize perfect detection and concealment for processor failure while suppressing performance deterioration in multiplexing programs operating on a hypervisor by operating in the same way at a software level. SOLUTION: When respective processors 100 and 101 access to an I/O data output memory region, hypervisor transition is not performed, and a transition number to the hypervisors 132 and 133 is reduced by performing the hypervisor transition by catching a DMA start command, and by collectively performing comparisons. This reduces a hypervisor transition overhead associated with the I/O data output memory access. An I/O data comparison unit is added to an I/O switch 104. After catching the DMA start command, the hypervisors 132 and 133 supply an address of a memory region to the I/O data comparison unit, a comparison overhead is reduced by performing a comparison processing in the I/O data comparison unit in reading the I/O data output memory. COPYRIGHT: (C)2012,JPO&INPIT |
