System and method for host initialization for an adapter that supports virtualization

US7464191B2 · kind B2 · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Richard Louis Arndt · Austin, US
• Giora Biran · Jerusalem, IL
• Patrick Allen Buckland · Austin, US
• Harvey Gene Kiel · Rochester, US
• Vadim Makhervaks · Austin, US
• Renato J. Recio · Austin, US
• Leah Shalev · Jerusalem, IL
• Jaya Srikrishnan · Wappingers Falls, US

Key dates

• Filing date: Feb 25, 2005
• Grant date: Dec 9, 2008
• Expiry date: Apr 24, 2026

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F12/0653
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

A method, computer program product, and distributed data processing system that enables host software or firmware to map PCI adapter virtual resources to PCI bus addresses that are associated with a system image is provided. Virtual addresses maintained in a protection table segment assigned to a system image are mapped to physical addresses defined in entries of an address table segment assigned to the system image. Discontiguous memory regions identified in entries of the address table segment may thus be mapped to a contiguous virtual address space.