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

From: <bugzilla-noreply_at_freebsd.org>
Date: Sun, 25 Jul 2021 20:24:02 UTC

--- Comment #12 from Matthias Andree <mandree@FreeBSD.org> ---
(In reply to Billy from comment #11)
If you can boot into single user mode, the mount your root FS r/w, you can add
this devmatch_blacklist to the configuration, the devmatch autoloads happen on
full boot from /etc/rc.d.

Not sure how this works with the install CD though, if the install itself
already slows down to a hog before you can get your hands on the module
loading, can you get a root shell to kldunload virtio_random?

I was upgrading from 12.2 to 13.0 so I don't know how the install CD behaves.

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