[Bug 271983] mi_switch hang in KVM on Sapphire Rapids running NET_EPOCH_DRAIN_CALLBACKS

In reply to: bugzilla-noreply_a_freebsd.org: "[Bug 271983] mi_switch hang in KVM on Sapphire Rapids running NET_EPOCH_DRAIN_CALLBACKS"
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From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 13 Jun 2023 19:25:19 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=271983

--- Comment #2 from R. Christian McDonald <rcm@rcm.sh> ---
@markj

Thanks for the clarification there.

This only happens while running in a KVM guest (Ubuntu 22.04, 5.19 kernel) and
does not when running directly on the same hardware.

Additionally, this happens on an otherwise idle box.

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