METHOD AND APPARATUS FOR PROVIDING INDEPENDENT LOGICAL ADDRESS SPACE AND ACCESS MANAGEMENT

PROBLEM TO BE SOLVED: To control so as not to permit the access of another processor with respect to an memory area secured for the processing of a processor so that the performance stability of an information processor as a whole will not be impaired when the processor accesses the memory as appropriate when tasks are to be executed. SOLUTION: A command receiver receives, from an external access requesting entity, a command with which to access data, together with an address to be accessed and IOID to identify the access requesting entity. Based on the IOID, the access decision unit determines whether or not an access requesting entity is authorized to access an objective access destination. The access decision unit determines whether access of the access requesting entity is permitted or not, for each page that serves as the basic management unit of logical address in the processor space. COPYRIGHT: (C)2011,JPO&INPIT