[Bug 283815] listing dev.vgapci.X.%iommu hangs indefinitely on NVIDIA card

In reply to: bugzilla-noreply_a_freebsd.org: "[Bug 283815] 'sysctl -a' hangs indefinitely"
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From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 03 Jan 2025 17:17:51 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=283815

--- Comment #4 from Anton Saietskii <vsasjason@gmail.com> ---
Compared 'vga'-containing commits between releng/14.2 and releng/14.1 --
identical.

Then compared 'iommu'-containing commits (as this OID hangs) and discovered
ec8d60f0d9b762880482e39f567db552c152d3a2 by kib@, which exposes the value. This
commit is only present in releng/14.2, so I believe it's the trigger. However,
most likely no more than a trigger -- not root cause.

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