[Bug 254513] virtio_random: random_harvestq spinning on a CPU with Q35 virtio random device

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 12 Jan 2022 20:32:23 UTC

--- Comment #35 from Dennis Noordsij <dennis.noordsij@alumni.helsinki.fi> ---
(In reply to Jamie Landeg-Jones from comment #34)

Ah OK. For root servers Hetzner provides an additional special "AX" (AMD line)
flavored FreeBSD 13 rescue image - though I am not actually sure what the
difference is. 

For the VPS's there is only one FreeBSD rescue image, which includes only a few
necessary modules but not virtio and which works without issue.

They do not actually have a FreeBSD installation option for the VPS's - you can
only install FreeBSD via the rescue image (either manually or running
bsdinstall[image]) - but mostly what I want to say is that they don't know what
OS you're actually running and there therefore shouldn't be any special KVM
settings and it should be the same thing a Linux OS sees. At most the provided
bsdinstall blacklists virtio.

As far as I have been able to tell, this is the only issue with this (virtual)
hardware, it even performs surprisingly well.

(For reference, this is a CPX11 in Nuremburg)

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