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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