[vfio-users] [help] 2 identical GPUs in Arch

[Garland Key]

@sL1pKn07 SpinFlo

This is a jackpot of information - THANK YOU!  I'll let you know if/when
I'm able to make this work :D

On Tue, Feb 23, 2016 at 2:03 PM sL1pKn07 SpinFlo <sl1pkn07 at gmail.com> wrote:

> double identical gpu, i mean
>
> greetings
>
> 2016-02-23 20:00 GMT+01:00 sL1pKn07 SpinFlo <sl1pkn07 at gmail.com>:
> > my arch script:
> >
> > systemd service:
> >
> > [Unit]
> > Description=Binds devices to vfio-pci
> > After=syslog.target
> >
> > [Service]
> > Type=oneshot
> > RemainAfterExit=yes
> > ExecStart=-/usr/bin/setup_kvm_vfio.sh
> >
> > [Install]
> > WantedBy=multi-user.target
> >
> > setup_kvm_vfio.sh script:
> >
> > #!/bin/bash
> >
> > # Get pci-id host GPU
> > host_gpu=$(lspci | grep "GTX 770" | awk '{print $1;}')
> > host_gpu_audio=$(echo $host_gpu | sed -e 's/\.0$/.1/')
> >
> > # Get pci-id/vendor-id/device-id guest GPU
> > guest_gpu=$(lspci | grep "GTX TITAN Black" | awk '{print $1;}')
> > guest_gpu_vendor=$(cat /sys/bus/pci/devices/0000:$guest_gpu/vendor)
> > guest_gpu_device=$(cat /sys/bus/pci/devices/0000:$guest_gpu/device)
> > guest_gpu_audio=$(echo $guest_gpu | sed -e 's/\.0$/.1/')
> > guest_gpu_audio_vendor=$(cat
> /sys/bus/pci/devices/0000:$guest_gpu_audio/vendor)
> > guest_gpu_audio_device=$(cat
> /sys/bus/pci/devices/0000:$guest_gpu_audio/device)
> >
> > # Get pci-id/vendor-id/device-id guest USB
> > # usb_pci=$(lspci | grep "NEC" | head -1 | awk '{print $1;}')
> > # usb_pci_vendor=$(cat /sys/bus/pci/devices/0000:$usb_pci/vendor)
> > # usb_pci_device=$(cat /sys/bus/pci/devices/0000:$usb_pci/device)
> >
> > # Get pci-id/vendor-id/device-id guest SATA
> > # sata_pci=$(lspci | grep "Marvell Technology Group Ltd. 88SE9120
> > SATA" | awk '{print $1;}')
> > # sata_pci_vendor=$(cat /sys/bus/pci/devices/0000:$sata_pci/vendor)
> > # sata_pci_device=$(cat /sys/bus/pci/devices/0000:$sata_pci/device)
> >
> > # Set real driver for host GPU/GPU-audio
> > echo nvidia        > /sys/bus/pci/devices/0000:$host_gpu/driver_override
> > echo snd-hda-intel >
> /sys/bus/pci/devices/0000:$host_gpu_audio/driver_override
> >
> > # Set vfio-pci driver for guest GPU/GPU-audio/USB/SATA
> > echo vfio-pci      > /sys/bus/pci/devices/0000:$guest_gpu/driver_override
> > echo vfio-pci      >
> /sys/bus/pci/devices/0000:$guest_gpu_audio/driver_override
> > # echo vfio-pci       >
> /sys/bus/pci/devices/0000:$usb_pci/driver_override
> > # echo vfio-pci       >
> /sys/bus/pci/devices/0000:$sata_pci/driver_override
> >
> > # Load vfio-pci kernel module
> > modprobe vfio-pci
> >
> > # Set GPU/GPU-audio/USB/SATA vfio-pci id
> > echo $guest_gpu_vendor $guest_gpu_device             >
> > /sys/bus/pci/drivers/vfio-pci/new_id
> > echo $guest_gpu_audio_vendor $guest_gpu_audio_device >
> > /sys/bus/pci/drivers/vfio-pci/new_id
> > # echo $usb_pci_vendor $usb_pci_device                 >
> > /sys/bus/pci/drivers/vfio-pci/new_id
> > # echo $sata_pci_vendor $sata_pci_device               >
> > /sys/bus/pci/drivers/vfio-pci/new_id
> >
> > # Unbind GPU/GPU-audio/USB/SATA real driver
> > echo 0000:$guest_gpu       >
> /sys/bus/pci/devices/0000:$guest_gpu/driver/unbind
> > echo 0000:$guest_gpu_audio >
> > /sys/bus/pci/devices/0000:$guest_gpu_audio/driver/unbind
> > # echo 0000:$usb_pci          >
> /sys/bus/pci/devices/0000:$usb_pci/driver/unbind
> > # echo 0000:$sata_pci         >
> > /sys/bus/pci/devices/0000:$sata_pci/driver/unbind
> >
> > # Bind GPU/GPU-audio/USB/SATA to vfio-pci
> > echo 0000:$guest_gpu       > /sys/bus/pci/drivers/vfio-pci/bind
> > echo 0000:$guest_gpu_audio > /sys/bus/pci/drivers/vfio-pci/bind
> > # echo 0000:$usb_pci        > /sys/bus/pci/drivers/vfio-pci/bind
> > # echo 0000:$sata_pci       > /sys/bus/pci/drivers/vfio-pci/bind
> >
> > # Load nvidia kernel module
> > modprobe nvidia
> >
> > zero config about vfio/pcistub on the grub/modprobe.d/modules-load/etc,
> except:
> >
> > GRUB_CMDLINE_LINUX_DEFAULT="intel_iommu=on"
> >
> > taked from:
> http://www.altechnative.net/2015/04/05/virtually-gaming-part-2-evolution-consolidation-and-move-to-kvm/
> >
> > that configuration have a identical GPU like you
> >
> > i hope helps you
> >
> > greetings
>
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