| 摘要 |
PROBLEM TO BE SOLVED: To provide an improved technology which processes an I/O address conversion cache error caused by an I/O command in a CPU. SOLUTION: A CPU hardware can buffer the I/O command that has caused the I/O address conversion cache error in a command queue until an I/O address conversion cache is updated by using required information. When the I/O address conversion cache is updated, the CPU reissues the I/O command from the command queue, converts an address of the I/O command at convenient time, and executes and processes the command as if the cache miss has not occurred. Thus, an I/O device does not need to process an error response from the CPU, the I/O command is processed by the CPU, and the I/O command is not canceled. COPYRIGHT: (C)2008,JPO&INPIT
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