METHOD, PROGRAM AND SYSTEM FOR INITIALIZING SHARED MEMORIES (FOR SHARING ENDPOINTS ACROSS A PLURALITY OF ROOT COMPLEXES ) FOR COMMUNICATION BETWEEN A PLURALITY OF ROOT COMPLEXES OF DATA PROCESSING SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a system and method for initializing shaped memories for sharing endpoints across a plurality of root complexes.

SOLUTION: A multi-root PCIe manager (MR-PCIM) initializes the shared memory between root complexes and endpoints by discovering the PCIe switch fabric by traversing all the links accessible through the interconnected switches of the PCIe switch fabric. As the links are traversed, the MR-PCIM compares information obtained for each of the root complexes and endpoints to determine which endpoints and root complexes reside on the same blade. A virtual PCIe tree data structure is then generated that ties the endpoints available on the PCIe switch fabric to each root complex.

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