I'd put the networking stuff, synergy and all that into some sort of
"Potential improvements" section and link to related pages instead, to
avoid filling the vfio page with unrelated content for the sake of
having an entire guide in one place.
About the bridge, double-check the output of `ip a` or `networkctl` if
you're using systemd-networkd, to make sure that your bridge is properly
setup as the primary network interface and that nothing else is trying
to use eth0/enp0s0.
Nicolas
On 2016-04-18 18:56, Garland Key wrote:
I just tried this and as soon as I start the VM, my bridge on the host
fails and defaults to the wired connection.
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.
On Mon, Apr 18, 2016 at 6:22 PM, Jonas Camillus Jeppesen
<jona...@sdu.dk <mailto:jona...@sdu.dk>> wrote:
On a fresh Arch install (no desktop environment, no network
manager) I added a bridge like this with systemd's networkd
service:
https://wiki.archlinux.org/index.php/Systemd-networkd#DHCP_with_two_distinct_IP
. 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.
This page is unnecessarily complicated it seems to me:
https://wiki.archlinux.org/index.php/QEMU#Networking
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.
On 04/18/2016 11:57 PM, Bronek Kozicki wrote:
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.
B.
*From: *Garland Key
*Sent: *Monday, 18 April 2016 22:21
*To: *Nicolas Roy-Renaud; vfio-users
*Subject: *Re: [vfio-users] [FEEDBACK NEEDED] Rewriting the Arch
wiki article
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.
Best,
Garland
On Mon, Apr 18, 2016 at 5:14 PM, Garland Key
<david.garland....@gmail.com
<mailto:david.garland....@gmail.com>> wrote:
Please add what to do if you have two identical GPUs. Here
is exactly what is needed to make it work.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - -
/
*/etc/modprobe.d/vfio.conf*/
install vfio-pci /sbin/vfio-pci-override-vga.sh
options vfio-pci disable_vga=1 allow_unsafe_interrupts=1
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - -
*//sbin/vfio-pci-override-vga.sh/*
#!/bin/sh
for i in $(find /sys/devices/pci* -name boot_vga); do
if [ $(cat $i) -eq 0 ]; then
GPU=$(dirname $i)
AUDIO=$(echo $GPU | sed -e "s/0$/1/")
echo "vfio-pci" > $GPU/driver_override
if [ -d $AUDIO ]; then
echo "vfio-pci" >
$AUDIO/driver_override
fi
fi
done
modprobe -i vfio-pci
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - -
Add the following to /*/etc/mkinitcpio.**conf*/and then run
*/mkinitcpio -p linux/**
*
BINARIES="/usr/bin/find /usr/bin/dirname"
FILES="/sbin/vfio-pci-override-vga.sh"
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - -
*Tested Hardware:*
Motherboard: Asus Sabertooth X99
<https://www.asus.com/us/Motherboards/SABERTOOTH_X99/>
CPU: Intel Core i7-5930K
<http://ark.intel.com/products/82931/Intel-Core-i7-5930K-Processor-15M-Cache-up-to-3_70-GHz>
GPU 1: GIGABYTE GeForce GTX 970 4GB G1 Gaming OC Edition
<http://www.newegg.com/Product/Product.aspx?Item=N82E16814125684>
GPU 2: GIGABYTE GeForce GTX 970 4GB G1 Gaming OC Edition
<http://www.newegg.com/Product/Product.aspx?Item=N82E16814125684>
RAM: 32GB Corsair Dominator Platinum DDR4
(CMD16GX4M2A2666C15)
<http://www.newegg.com/Product/Product.aspx?Item=N82E16820233709>
On Tue, Apr 12, 2016 at 3:36 PM, Nicolas Roy-Renaud
<nicolas.roy-renau...@ens.etsmtl.ca
<mailto:nicolas.roy-renau...@ens.etsmtl.ca>> wrote:
I'm currently planning a full rewrite of the article on
Arch wiki about PCI passthroughs
<https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF>
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 give me some feedback on the planned structure
<https://wiki.archlinux.org/index.php/Talk:PCI_passthrough_via_OVMF#Page_rewrite>
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.
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.
-Nicolas
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