Use of Peripheral Component Interconnect Input/Output Virtualization Devices to Create High-Speed, Low-Latency Interconnect

A data processing system for creating a high speed peripheral component interconnect input/output virtualization configuration, the data processing system comprising:

• a bus;
• a memory, connected to the bus, wherein the memory contains computer-executable instructions;
• a central processing unit, connected to the bus, wherein the central processing unit executes the computer-executable instructions to direct the data processing system to:
• create a set of virtual function path authorization tables, by a trusted entity, wherein each entry permits a virtual function to access a set of address ranges in a set of systems;
• receive a request including a virtual function, from a requester, to provide requested data from a source system to a target set of systems in the set of systems;
• identify a source address of the requested data in the source system and a target address in each target system of the target set of systems;
• create a virtual function work queue entry for the source system containing the source address of the requested data in the source system and the target address in each target system;
• determine, in the set of virtual function-path authorization tables, whether the virtual function is authorized;
• responsive to a determination that the virtual function is authorized, write the requested data from the source address of the source system through a firewall of an intermediate device into the target address of each target system, wherein the intermediate device is one of a multi-root peripheral component interconnect device and a single root peripheral component interconnect device;
• and
• responsive to writing the requested data, issue a notice of completion to the requester.

A computer program product for creating a high speed peripheral component interconnect input/output virtualization configuration, the computer program product comprising:

• a computer-usable medium containing computer-executable instructions stored thereon, the computer-executable instructions comprising:
• computer-executable instructions for creating a set of virtual function path authorization tables, by a trusted entity, wherein each entry permits a virtual function to access a set of addresses in a set of systems;
• computer-executable instructions for receiving a request including a virtual function, from a requester, to provide requested data from a source system to a target set of systems in the set of systems;
• computer-executable instructions for identifying a source address of the requested data in the source system and a target address in each target system of the target set of systems;
• computer-executable instructions for creating a virtual function work queue entry for the source system containing the source address of the requested data in the source system and the target address in each target system;
• computer-executable instructions for determining, in the set of virtual function-path authorization tables, whether the virtual function is authorized;
• computer-executable instructions responsive to a determination that the virtual function is authorized for writing the requested data from the source address of the source system through a firewall of an intermediate device into the target address of each target system, wherein the intermediate device is one of a multi-root peripheral component interconnect device and a single root peripheral component interconnect device;
• and
• computer-executable instructions responsive to writing the requested data, for issuing a notice of completion to the requester.