Method, system, and apparatus for dynamic reconfiguration of resources

A system to facilitate dynamic reconfiguration of resources, wherein the resources are allocated between multiple operating system partitions, the system comprising:

• a point to point architecture with a plurality of caching agents and home agents coupled via a plurality of point to point links between each of the caching agents and the home agents;
• the system to support the dynamic reconfiguration for an individual resource with quiesce and de-quiesce operations managed by system firmware by generating one or more interrupt signals to appropriate agents when link initialization is in response to insertion of the resource to be added to the system, wherein a quiesce operation causes a state where there are no protocol transactions in the full system or a subset thereof except those generated by firmware and/or service system processors;
• and
• the dynamic reconfiguration to allow for on-line addition and on-line deletion of the individual resource within the system without requiring a reboot of an Operating System by firmware performing a quiesce of the caching agents and home agents on affected partitions and updating route tables.