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

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254513

deltatux at kwokinator.com changed:

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                 CC|                            |deltatux at kwokinator.com

--- Comment #5 from deltatux at kwokinator.com ---
Just wanted to chime in that I have been experiencing the same issue as well,
it looks like this issue may be more widespread, I found someone writing about
this issue while trying to research a workaround for this problem:

https://decomo.info/wiki/en/blog/2021/2021-05-02

I tried applying the workaround as suggested in this bug report by blacklisting
virtio_random in rc.conf and it appears to be working, random_harvestq is no
longer eating up 1 of my VM cores.

However, I'm not sure what the impact is for blacklisting virtio_random...

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