Intel Corporation
TECHNOLOGIES FOR INCREASING LINK EFFICIENCY

Abstract:

Techniques for increasing link efficiency are disclosed. In one embodiment, a device handle table is created at each end of a link. Device handle allocation messages can be used to associate a particular device handle with a particular domain identifier, such as a bus/device/function (BDF) identifier or a processor address space identifier (PASID). Once a device handle is allocated, messages can be sent between the two ends of the link that include the device handle. The device handle can be used to determine the domain identifier associated with the message. As the device handle can be fewer bits than the domain identifier, the link efficiency can be increased.