[Bug 298723] SR-IOV ix driver error with intel X520-DA1

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=298723

--- Comment #5 from Bruno Damour <bruno@ruomad.net> ---
Investigating PCI passthrough.

I have a X520-DA1 configured with 8 VFs
- VF-0 is configured as interface on the host
- VF-1, VF-2, VF-3 are used by jails (everything works)

The problem is that as soon as I launch a VM with :

passthru0="2/0/140" (should be VF-6)

the network goes down:

ix0: invalid DM target from VF 0; reset VF [3 times]
ix0: invalid DM target from VF 3; reset VF [3 times]
ix0: quarantined VF 0 after 5 invalid DMA targets
ix0: quarantined VF 3 after 5 invalid DMA targets

and then (repeats)
ixv0: Mailbox API negotiation failed
ixv3: Mailbox API negotiation failed

No idea why VF 1 and VF 2 are not mentioned ?

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