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Date:      Wed, 24 Feb 2016 15:28:14 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-amd64@FreeBSD.org
Subject:   [Bug 207446] Hang bringing up vtnet(4) on >8 cpu GCE VMs
Message-ID:  <bug-207446-6-S13Qb9VGC9@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-207446-6@https.bugs.freebsd.org/bugzilla/>
References:  <bug-207446-6@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D207446

--- Comment #5 from Bryan Venteicher <bryanv@FreeBSD.org> ---
(In reply to Jon Olson from comment #4)

The issue appears that GCE doesn't work when the guest driver requests fewer
than device's advertised max number of queue pairs. The FreeBSD driver will
request at most 8 queue pairs. The driver ends up hanging when calling into=
 the
host (IIRC, during the VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET command).

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