VIRTUALIZATION SYSTEM OF PERIPHERAL DEVICES OF COMPUTER SYSTEM

摘要

PURPOSE: A peripheral device virtualization system of a computer system is provided to improve a virtualization performance by using a memory area setting function supporting hardware. CONSTITUTION: A first processor(30) is operated as a secure state in a special right mode. A second processor(20) is operated as a normal state in a user mode and the special right mode. The second processor includes a kernel operated in a special right mode and a user process operated in the user mode. A monitor mode(40) controls the access of the second processor to a memory area set as the secure state in the first processor. A handler processes a reading or a writing request for a memory according to an analysis result by analyzing the state information in the occurrence of abort data. [Reference numerals] (40) Monitor mode; (AA,CC) User mode; (BB,DD) Privilege mode;