VIORND(4) |
Device Drivers Manual |
VIORND(4) |
viornd
—
VirtIO entropy source
When the system has entropy demand, the viornd
driver,
used with a compatible hypervisor such as QEMU, KVM, or Google Compute Engine,
requests entropy using the VirtIO random number interface and feeds it into
the system entropy pool.
The viornd
driver appeared in OpenBSD
5.5.
The viornd
driver was written by
Stephan Fritsch
<sf@fritsch.de> and
reworked to request entropy upon demand by
Thor Lancelot Simon
<tls@NetBSD.org>.
VirtIO appears to support at least 8 pending entropy requests, but
viornd
currently supports only one pending request at
a time.