[Bug 203874] [patch] MSI/MSI-X interrupts don't work in VMware virtual machines

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203874

--- Comment #15 from John Baldwin <jhb at FreeBSD.org> ---
(In reply to igor from comment #14)
Comment #12 explains why another hypervisor had issues with FreeBSD due to an
incomplete emulation of MSI-X.  However, the questions it raises can only be
answered by someone who knows how VMWare's hypervisor implements passthrough
and how it has changed over time.  For example, on Xen we employ a workaround
for the known-broken versions (and Xen has been fixed).  It may be that if
VMWare had a similar issue it was previously fixed as well which would explain
why the quirk may not be needed on newer versions of VMWare, but someone from
VMWare would have to answer that question.

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