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CMP(4) Device Drivers Manual (sparc64) CMP(4)

cmp
chip multi-threading processor

cmp* at mainbus0
cmp* at ssm?
cpu* at cmp?

The cmp driver provides support for the chip multi-threading processors such as the Sun UltraSPARC IV and Fujitsu SPARC64 VI processors. It is not a physical device as such, but an abstraction to attach individual CPU cores.

intro(4)

The cmp driver first appeared in OpenBSD 4.4.

The cmp driver was written by Mark Kettenis <kettenis@openbsd.org>.
July 16, 2013 OpenBSD-current