https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=288237

--- Comment #18 from Konstantin Belousov <[email protected]> ---
(In reply to Michael Osipov from comment #17)
I am not sure what did you expected to see.

Guest exceptions of any kind (#UD included) are really normal events that must
be reflected to guest. The knob I mentioned only changes the implementation of
the reflection (instead of hw assist, it causes full vm exit and then
re-injection
managed by vmm).

You can see all exceptions handled by vmm if you add KTR to the kernel and then
enable KTR_VMM AKA KTR_GEN event.  This is what I read in the vmx_exit_trace()
function.

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