<div dir="ltr">I just tried this and as soon as I start the VM, my bridge on the host fails and defaults to the wired connection.<br><br>I think that if the pci-passthrough wiki is going to talk about synergy as an input solution, then it should also discuss creating a bridge, since it's necessary in order to accomplish said goal.</div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Apr 18, 2016 at 6:22 PM, Jonas Camillus Jeppesen <span dir="ltr"><<a href="mailto:jonascj@sdu.dk" target="_blank">jonascj@sdu.dk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>On a fresh Arch install (no desktop
environment, no network manager) I added a bridge like this with
systemd's networkd service:
<a href="https://wiki.archlinux.org/index.php/Systemd-networkd#DHCP_with_two_distinct_IP" target="_blank">https://wiki.archlinux.org/index.php/Systemd-networkd#DHCP_with_two_distinct_IP</a>
. Then in virt-manager under network adapter I just choose
"Specify shared device name" as "Network source" and type in "br0"
which is the name I gave my bridge. <br>
<br>
This page is unnecessarily complicated it seems to me:
<a href="https://wiki.archlinux.org/index.php/QEMU#Networking" target="_blank">https://wiki.archlinux.org/index.php/QEMU#Networking</a><br>
<br>
The Arch wiki page on vfio isn't really about networking in
qemu/kvm, but a note could be added to visit the KVM and QEMU
pages, and those could then be updated to mention this
systemd-networkd example.<br>
<br>
On 04/18/2016 11:57 PM, Bronek Kozicki wrote:<br>
</div>
<blockquote type="cite">
<div style="width:100%;font-size:initial;font-family:Calibri,'Slate Pro',sans-serif,sans-serif;color:rgb(31,73,125);text-align:initial;background-color:rgb(255,255,255)">For
me setting up networking with an existing bridge "just works", I
wrote few days ago on this lis how I've set it up on my machine.
Hint: I do not use virsh "networks" capabilities at all - none
defined (undefined the default one) and none started. Just my,
manually crafted bridge, explicitly used in VM definitions.</div>
<div style="width:100%;font-size:initial;font-family:Calibri,'Slate Pro',sans-serif,sans-serif;color:rgb(31,73,125);text-align:initial;background-color:rgb(255,255,255)"><br>
</div>
<div style="width:100%;font-size:initial;font-family:Calibri,'Slate Pro',sans-serif,sans-serif;color:rgb(31,73,125);text-align:initial;background-color:rgb(255,255,255)"><br>
</div>
<div style="width:100%;font-size:initial;font-family:Calibri,'Slate Pro',sans-serif,sans-serif;color:rgb(31,73,125);text-align:initial;background-color:rgb(255,255,255)">B.</div>
<div style="width:100%;font-size:initial;font-family:Calibri,'Slate Pro',sans-serif,sans-serif;color:rgb(31,73,125);text-align:initial;background-color:rgb(255,255,255)"><br>
</div>
<table style="background-color:white;border-spacing:0px" width="100%">
<tbody>
<tr>
<td colspan="2" style="font-size:initial;text-align:initial;background-color:rgb(255,255,255)">
<div>
<div><b>From: </b>Garland Key</div>
<div><b>Sent: </b>Monday, 18 April 2016 22:21</div>
<div><b>To: </b>Nicolas Roy-Renaud; vfio-users</div>
<div><b>Subject: </b>Re: [vfio-users] [FEEDBACK NEEDED]
Rewriting the Arch wiki article</div>
</div>
</td>
</tr>
</tbody>
</table>
<br>
<div>
<div dir="ltr">I'm an intermediate Linux user, so this this
stuff can be complicated to me sometimes. Right now I'm
having trouble setting up a network bridge that virt-manager
will recognize. I've arrived at the conclusion that this
simply isn't possible on Arch. That said, I can't find any
documentation on how to convince qemu to use an existing
network bridge. If you're willing, please add this
information as well. If you already know how, any pointers
would be greatly appreciated.<br>
<br>
Best,<br>
Garland</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Apr 18, 2016 at 5:14 PM,
Garland Key <span dir="ltr"><<a href="mailto:david.garland.key@gmail.com" target="_blank">david.garland.key@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Please add what to do if you have two
identical GPUs. Here is exactly what is needed to make
it work.<br>
<br>
- - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - <br>
<i><br>
<font face="monospace, monospace"><b>/etc/modprobe.d/vfio.conf</b></font></i><br>
<br>
<span style="font-family:monospace"><span style="color:rgb(0,0,0)"> install vfio-pci
/sbin/vfio-pci-override-vga.sh
</span><br>
options vfio-pci disable_vga=1
allow_unsafe_interrupts=1<br>
<br>
</span>- - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - <span style="font-family:monospace"><br>
<br>
</span><span style="color:rgb(0,0,0);font-family:monospace"><b><i>/sbin/vfio-pci-override-vga.sh</i></b><br>
</span><span style="font-family:monospace"><br>
</span><span style="font-family:monospace"><span style="color:rgb(0,0,0)">#!/bin/sh
</span><br>
<br>
for i in $(find /sys/devices/pci* -name boot_vga);
do
<br>
if [ $(cat $i) -eq 0 ]; then
<br>
GPU=$(dirname $i)
<br>
AUDIO=$(echo $GPU | sed -e
"s/0$/1/")
<br>
echo "vfio-pci" >
$GPU/driver_override
<br>
if [ -d $AUDIO ]; then
<br>
echo "vfio-pci" >
$AUDIO/driver_override
<br>
fi
<br>
fi
<br>
done
<br>
<br>
modprobe -i vfio-pci<br>
<br>
</span>- - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - <span style="font-family:monospace"><br>
<br>
</span>Add the following to <i><font face="monospace,
monospace"><b>/etc/mkinitcpio.</b></font><b style="font-family:monospace,monospace">conf</b></i><font face="arial, helvetica, sans-serif"> and then run </font><b style="font-family:monospace,monospace"><i>mkinitcpio
-p linux</i></b><font face="monospace, monospace"><b><br>
</b></font><span style="font-family:monospace"><span style="color:rgb(0,0,0)"><br>
</span></span><span style="font-family:monospace"><span style="color:rgb(0,0,0)">BINARIES="/usr/bin/find
/usr/bin/dirname"</span><br>
</span><span style="color:rgb(0,0,0)"><font face="monospace">
FILES="/sbin/vfio-pci-override-vga.sh"</font><br>
<br>
</span>- - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - <br>
<br>
<font face="arial, helvetica, sans-serif"><b>Tested
Hardware:</b><br>
<br>
Motherboard: <a href="https://www.asus.com/us/Motherboards/SABERTOOTH_X99/" target="_blank">Asus Sabertooth X99</a><br>
</font>CPU<font face="arial, helvetica, sans-serif">: <span style="color:rgb(0,0,0)"><a href="http://ark.intel.com/products/82931/Intel-Core-i7-5930K-Processor-15M-Cache-up-to-3_70-GHz" target="_blank">Intel Core i7-5930K</a><br>
</span></font>GPU 1: <a href="http://www.newegg.com/Product/Product.aspx?Item=N82E16814125684" target="_blank">GIGABYTE GeForce GTX 970 4GB G1 Gaming
OC Edition</a><br>
GPU 2: <a href="http://www.newegg.com/Product/Product.aspx?Item=N82E16814125684" target="_blank">GIGABYTE GeForce GTX 970 4GB G1 Gaming
OC Edition</a><br>
RAM: <a href="http://www.newegg.com/Product/Product.aspx?Item=N82E16820233709" target="_blank">32GB Corsair Dominator Platinum DDR4 <font face="arial, helvetica, sans-serif">(CMD16GX4M2A2666C15)</font></a><br>
<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Tue, Apr 12, 2016 at 3:36
PM, Nicolas Roy-Renaud <span dir="ltr"><<a href="mailto:nicolas.roy-renaud.1@ens.etsmtl.ca" target="_blank">nicolas.roy-renaud.1@ens.etsmtl.ca</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"> I'm currently
planning a full rewrite of <a href="https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF" target="_blank">the article on Arch wiki about
PCI passthroughs</a> and, as per Arch wiki
guidelines, I'm supposed get the approval of other
users before undergoing such comlex edits. If
anyone on this mailing list is an Arch wiki
collaborator or frequent user, I would appreciate
if you could <a href="https://wiki.archlinux.org/index.php/Talk:PCI_passthrough_via_OVMF#Page_rewrite" target="_blank">give me some feedback on the
planned structure</a> and propose additional
sections or potential user mistakes to highlight.
My primary objective here is to make most of
what's on Alex Williamson's blog more
straightforward and concise.<br>
<br>
I've already rewritten the first two sections
("Prerequisites" and "Setting up IOMMU"), and the
rest of the article should essentially follow the
same basic structure and style. Replies here or on
the wiki's discussion page would be much
appreciated.<span><font color="#888888"><br>
<br>
-Nicolas<br>
</font></span></div>
<br>
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