Patent ID: 8261128
Filing Date: 2012-09-04
Classification: G06F

Abstract:
1. A method of data processing in a data processing system including an input/output (I/O) host bridge to which at least one I/O adapter is coupled by an I/O link, the method comprising: in a register of the I/O host bridge, setting a configuration partitionable endpoint (PE) field to identify a PE to be used for an I/O configuration operation; thereafter, the I/O host bridge initiating the I/O configuration operation on the I/O link; determining if an error occurred for the I/O configuration operation; and in response to a determination that an error occurred for the I/O configuration operation, setting an error state in the I/O host bridge only for the PE indicated by the configuration PE field of the register in the I/O host bridge, wherein I/O configuration errors are isolated to particular PEs.