cmp(4)

cmp4

Chip multi-threading processor

Usage

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

Overview

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.

History

The cmp driver first appeared in OpenBSD 4.4.

Authors

The cmp driver was written by Mark Kettenis ⟨[email protected]⟩.

From man 8.0-current-20261101 in OpenBSD 8.0-current (2026-11-01). Parsed by carta from the page's mdoc source.