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Date:      Sat, 11 Jun 2016 02:36:42 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-amd64@FreeBSD.org
Subject:   [Bug 207602] 10.3-RC1 zroot doesn't boot with VT-d enabled and vmm in loader.conf
Message-ID:  <bug-207602-6-U3LRoxwQAG@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-207602-6@https.bugs.freebsd.org/bugzilla/>
References:  <bug-207602-6@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D207602

borisboris@gmx.net <borisboris@gmx.net> changed:

           What    |Removed                     |Added
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                 CC|                            |borisboris@gmx.net

--- Comment #5 from borisboris@gmx.net <borisboris@gmx.net> ---
The same Issue here.

CPU: Intel(R) Core(TM) i5-5675C CPU @ 3.10GHz (3092.90-MHz K8-class CPU)

The Board: Gigabyte H97N WIFI

The problem happens on an actual 10.3 and 11-CURRENT. Tested it on both
versions.

I tested it via internal em0 and re0. I also tested it on em-Interface on
PCI-X.

vmm_load=3D"YES" ... just that runs fine.

As soon as I include one of the three Network Interface into pptdevs
(/boot/loader.conf), the same problem occurs. On all 3 NICs the same. The
Kernel boots and suddenly after it detaches lots of Devices. Then it's not =
able
to mount root (in these cases via ZFS; but I suggest it would be the same on
UFS, because the device has been gone).

I also tested it on a Mac Mini Late 2014. There it works; except for OpenBS=
D as
guest OS. There I get interrupt mapping issues. But that's a different kind=
 of
problem and may be an Issue of OpenBSD drivers. With FreeBSD guest I can use
the NIC without problems with PCI passthrough.=20

So, the problem seems to be there with Broadwell and Skylake.

--=20
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