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Date:      Mon, 13 Sep 2021 16:52:59 +0000
From:      bugzilla-noreply@freebsd.org
To:        virtualization@FreeBSD.org
Subject:   [Bug 254513] virtio_random: random_harvestq spinning on a CPU with Q35 virtio random device
Message-ID:  <bug-254513-27103-40KH49NQNQ@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-254513-27103@https.bugs.freebsd.org/bugzilla/>
References:  <bug-254513-27103@https.bugs.freebsd.org/bugzilla/>

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

--- Comment #20 from Conrad Meyer <cem@freebsd.org> ---
It would be nice to get line numbers on that stack in vtrnd_read.

I wonder if this (misguided) Qemu feature is in play:

> Optional parameters to limit the rate of data sent to the guest are inlucded:
> -device virtio-rng-pci,max-bytes=1024,period=1000
> This restricts the data sent to the guest at 1KB per second. This is useful to not > let a guest starve the host of entropy.

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