[vfio-users] [FEEDBACK NEEDED] Rewriting the Arch wiki article

Garland Key david.garland.key at gmail.com
Mon Apr 18 22:37:53 UTC 2016


I found the

On Mon, Apr 18, 2016 at 5:57 PM, Bronek Kozicki <brok at spamcop.net> 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.key at 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-renaud.1 at 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
>>>
>>> _______________________________________________
>>> vfio-users mailing list
>>> vfio-users at redhat.com
>>> https://www.redhat.com/mailman/listinfo/vfio-users
>>>
>>>
>>
>
>
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