[vfio-users] VM not booting/no video output when PCI passthrough GPU is added
Roel Van Gorp
roelvangorp at gmail.com
Wed Dec 16 17:49:30 UTC 2015
Still no luck... Tried it with kernel 4.1.6-201.fc22 and 4.1.13-100.fc21,
but both gave the same result as 4.2.6.
Any other ideas?
2015-12-15 23:26 GMT+01:00 A de Beus <anthony.debeus at gmail.com>:
> I believe kernel 4.2.6 is broken. Use the linux-lts kernel which I think
> is still 4.1.6.
>
> On Dec 15, 2015, at 3:18 PM, Roel Van Gorp <roelvangorp at gmail.com> wrote:
>
> Hi guys,
>
> After successfully setting up a W10 VM while passing through my GTX 980ti
> on my old Arch linux install, I now have some difficulties setting it up on
> a new Fedora installation using the exact same hardware configuration.
>
> I'm using a fresh Fedora 23 installation, kernel 4.2.6-301, the
> virt-preview repo for the latest virtualization packages and the firmware
> repo at https://www.kraxel.org/repos/firmware.repo for the latest OVFM
> firmware.
>
> I mostly based myself on Alex Williamson's blog to set this up, resulting
> in the following changes in the following files:
>
> */etc/sysconfig/grub:*
>
> GRUB_CMDLINE_LINUX="rd.lvm.lv=fedora/root rd.lvm.lv=fedora/swap rhgb
> quiet intel_iommu=on rd.driver.pre=vfio-pci"
>
> */etc/modprobe.d/local.conf *
>
> options vfio-pci ids=10de:17c8,10de:0fb0
> options vfio-pci disable_vga=1
>
> */etc/dracut.conf.d/local.conf*
>
> add_drivers+="vfio vfio_iommu_type1 vfio_pci vfio_virqfd"
>
>
> This seems to have successfully enabled the vfio-pci driver, as shown by
> the output of lspci -nnk:
>
> 01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GM200
> [GeForce GTX 980 Ti] [10de:17c8] (rev a1)
> Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:3232]
> Kernel driver in use: vfio-pci
> Kernel modules: nouveau
> 01:00.1 Audio device [0403]: NVIDIA Corporation Device [10de:0fb0] (rev a1)
> Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:3232]
> Kernel driver in use: vfio-pci
> Kernel modules: snd_hda_intel
>
> *The VM:*
>
> Now I first set up the VM without PCI passthrough using virt-manager and
> everything worked as expected using a virtual display, allowing me to fully
> install Windows 10 Pro. The problems started when removing the virtual
> display and adding the PCI devices for the GTX 980 ti. There is no video
> output, and looking at the CPU monitor in virt-manager there is a short CPU
> spike after which it seems hangs at around 1-2%. Reattaching the virtual
> display again shows the bios splash screen normally as expected, after
> which it goes to black with just the small white prompt dash. Removing the
> PCI devices from the configuration again allow the VM to boot normally
> again. Here is the xml config for the VM:
>
> <domain type='kvm'>
> <name>win10</name>
> <uuid>527f731e-0d9e-460a-a1ef-7a010e191c34</uuid>
> <memory unit='KiB'>2560000</memory>
> <currentMemory unit='KiB'>2560000</currentMemory>
> <vcpu placement='static'>2</vcpu>
> <os>
> <type arch='x86_64' machine='pc-i440fx-2.4'>hvm</type>
> <loader readonly='yes'
> type='pflash'>/usr/share/edk2.git/ovmf-x64/OVMF_CODE-pure-efi.fd</loader>
> <nvram>/var/lib/libvirt/qemu/nvram/win10_VARS.fd</nvram>
> <boot dev='hd'/>
> </os>
> <features>
> <acpi/>
> <apic/>
> <pae/>
> <hyperv>
> <relaxed state='on'/>
> <vapic state='on'/>
> <spinlocks state='on' retries='8191'/>
> </hyperv>
> <vmport state='off'/>
> </features>
> <cpu mode='host-passthrough'>
> <topology sockets='1' cores='2' threads='1'/>
> </cpu>
> <clock offset='localtime'>
> <timer name='rtc' tickpolicy='catchup'/>
> <timer name='pit' tickpolicy='delay'/>
> <timer name='hpet' present='no'/>
> <timer name='hypervclock' present='yes'/>
> </clock>
> <on_poweroff>destroy</on_poweroff>
> <on_reboot>restart</on_reboot>
> <on_crash>restart</on_crash>
> <pm>
> <suspend-to-mem enabled='no'/>
> <suspend-to-disk enabled='no'/>
> </pm>
> <devices>
> <emulator>/usr/bin/qemu-kvm</emulator>
> <disk type='file' device='disk'>
> <driver name='qemu' type='qcow2'/>
> <source file='/var/lib/libvirt/images/win10.qcow2'/>
> <target dev='vda' bus='virtio'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x07'
> function='0x0'/>
> </disk>
> <controller type='usb' index='0' model='ich9-ehci1'>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x06'
> function='0x7'/>
> </controller>
> <controller type='usb' index='0' model='ich9-uhci1'>
> <master startport='0'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x06'
> function='0x0' multifunction='on'/>
> </controller>
> <controller type='usb' index='0' model='ich9-uhci2'>
> <master startport='2'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x06'
> function='0x1'/>
> </controller>
> <controller type='usb' index='0' model='ich9-uhci3'>
> <master startport='4'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x06'
> function='0x2'/>
> </controller>
> <controller type='pci' index='0' model='pci-root'/>
> <interface type='network'>
> <mac address='52:54:00:21:17:b8'/>
> <source network='default'/>
> <model type='rtl8139'/>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x03'
> function='0x0'/>
> </interface>
> <hostdev mode='subsystem' type='pci' managed='yes'>
> <source>
> <address domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
> </source>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x02'
> function='0x0'/>
> </hostdev>
> <hostdev mode='subsystem' type='pci' managed='yes'>
> <source>
> <address domain='0x0000' bus='0x01' slot='0x00' function='0x1'/>
> </source>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x04'
> function='0x0'/>
> </hostdev>
> <memballoon model='virtio'>
> <address type='pci' domain='0x0000' bus='0x00' slot='0x08'
> function='0x0'/>
> </memballoon>
> </devices>
> </domain>
>
>
> Any help would be greatly appreciated!
>
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