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

[Garland Key]

Please add what to do if you have two identical GPUs.  Here is exactly what
is needed to make it work.

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*/etc/modprobe.d/vfio.conf*

    install vfio-pci /sbin/vfio-pci-override-vga.sh
    options vfio-pci disable_vga=1 allow_unsafe_interrupts=1

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*/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

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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"

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*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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