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XEN(4) Device Drivers Manual XEN(4)

Xen domU nexus device

xen0 at pvbus?

xen driver performs HVM domU guest initialization, provides abstraction for virtual Xen interrupts, access to the XenStore configuration storage as well as a device probing facility for paravirtualized devices such as disk and network interfaces.

autoconf(4), intro(4), pvbus(4)

The xen driver first appeared in OpenBSD 5.9.

The xen driver was written by Mike Belopuhov <mikeb@openbsd.org> from scratch, inspired by the FreeBSD implementation.
December 9, 2015 OpenBSD-6.1