Fenwick & West LLP
Fast delivery of interrupt message over network
A computer network system and a method for fast delivery of an interrupt message over a computer network enables a first processor coupled to the computer network to very quickly send an interrupt message to a second processor coupled to the computer network, by directly writing the interrupt message to a doorbell address range associated with the second processor in the PCI memory space of a first PCI bus to which the first processor is coupled. The doorbell address range is mapped to a doorbell space in the PCI memory space of a second PCI bus to which the second processor is coupled. The first PCI bus is coupled to the computer network through a first PCI network adaptor, which processes the write transaction and send it to the network. The second PCI bus is coupled to the computer network through a second PCI network adaptor, which receives the write transaction from the network and transforms the write transaction into an interrupt message to the second processor.
Fujitsu Limited
G
G06F
inventional
Hirohide Takashi Jeffrey D. Takeshi
Sugahara Miyoshi Larson Horie