Partitioning memory mapped device configuration space

Details Partitioning memory mapped device configuration space Partitioning memory mapped device configuration space

2006-12-29

2011-10-18

Choe, Yong (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Memory configuring

C711S129000, C711S137000

Reexamination Certificate

active

08041920

ABSTRACT:
Embodiments of apparatuses, methods, and systems for partitioning memory mapped device configuration space are disclosed. In one embodiment, an apparatus includes a configuration space address storage location, an access map storage location, and addressing logic. The configuration space address storage location is to store a pointer to a memory region to which transactions to configure devices in a partition of a partitioned system are addressed. The access map storage location is to store an access map or a pointer to an access map. The addressing logic is to use the access map to determine whether a configuration transaction from a processor to one of the devices is to be allowed.

REFERENCES:
patent: 2002/0186711 (2002-12-01), Masuyama et al.

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