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XSPD(4) Device Drivers Manual XSPD(4)

xspd
XenSource Platform Device driver

xspd0 at pci?

The xspd driver provides xen(4) with alternative means to deliver virtual interrupts into the guest system via pci(4) interrupt allocation.

intro(4), pci(4), xen(4)

The xspd driver first appeared in OpenBSD 5.9.

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