[Bug 211062] [ixv] sr-iov virtual function driver fails to attach

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 18 Oct 2021 21:35:49 UTC

xygzen <j@iamplugged.in> changed:

           What    |Removed                     |Added
                 CC|                            |j@iamplugged.in

--- Comment #15 from xygzen <j@iamplugged.in> ---
If it helps any - I was getting the exact same issue at one cloud provider.

When I enabled SR-IOV in the BIOS it had a cryptic message about needing to
enable ASPM (Active State Power Management) for the SR-IOV to work properly.
Nothing I did allowed it to work.

When I switched providers, there was an ASPM setting in the BIOS of the new
machine that wasn't there previously - and these were both Supermicro boards so
it looks like not all motherboards support this functionality or maybe there is
a newer version of the BIOS that has the setting correctly enabled.

I still needed to enable hw.pci.honor_msi_blacklist=0 in /boot/loader.conf and
used the latest IX and IXV drivers from Intel:

IX - v3.3.25 -

IXV -v.1.5.28 -

Once I ran iovctl -C -f /etc/iovctl.conf the VF driver correctly attached to
ixv0 (no passthrough) and the pci devices were configured correctly for the
ixv1-3 for passthrough without drivers attached.

Setting iovctl_files="/etc/iovctl.conf" in rc.conf and changing the ip to be
configured on ixv0 instead of ix0 got this up and running automatically on

If you're looking for a good cloud host with support for this I can highly
recommend https://www.zare.com

Hope that helps!

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