公开(公告)号：JP2002304364A

公开(公告)日：2002-10-18

申请号：JP2002042190

申请日：2002-02-19

Applicant: IBM

Inventor： DAWKINS GEORGE JOHN ,  LEE VAN HOA ,  RANDALL DAVID LEE ,  TRAN KIET ANH

IPC: G06F13/14 ,  G06F13/28

Abstract: PROBLEM TO BE SOLVED: To provide a method and a system for implementing logical partition of an input/output slot in a data processing system, and a computer.program product. SOLUTION: In one form of implementation, this system includes a hypervisor and at least one DMA address inspecting component. The hypervisor receives an indirect memory.access demand regarding access to an input/output slot, and prohibits a device in a certain logical section from accessing to an input/ output slot assigned to a different logical section. The DMA address inspecting component receives a direct memory.access demand, and prohibits completion of a demand regarding an address which is not in the same logical section for the device of a requester. A demand regarding an address corresponding to the same logical section for the device of the requester is placed in a primary PCI bus by the DMA address inspecting component for transmission of a system.memory.