[vfio-users] GPU Pass-through for Linux guest
Daniel Browne
jairuncaloth at gmail.com
Mon May 2 01:11:15 UTC 2016
After some more research on using q35 and ioh3420 I have what I believe to
be a correct setup in libvirt.
However, the same problem persists.
xubuntu:~$ lspci
00:00.0 Host bridge: Intel Corporation 82G33/G31/P35/P31 Express DRAM
Controller
00:01.0 VGA compatible controller: Red Hat, Inc. QXL paravirtual graphic
card (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7500/5520/5500/X58 I/O Hub PCI
Express Root Port 0 (rev 02)
00:1d.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #1 (rev 03)
00:1d.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #2 (rev 03)
00:1d.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #3 (rev 03)
00:1d.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI
Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92)
00:1f.0 ISA bridge: Intel Corporation 82801IB (ICH9) LPC Interface
Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 6
port SATA Controller [AHCI mode] (rev 02)
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev
02)
01:00.0 VGA compatible controller: NVIDIA Corporation GM204 [GeForce GTX
970] (rev a1)
01:00.1 Audio device: NVIDIA Corporation GM204 High Definition Audio
Controller (rev a1)
02:01.0 PCI bridge: Red Hat, Inc. QEMU PCI-PCI bridge
03:01.0 Ethernet controller: Red Hat, Inc Virtio network device
03:02.0 Audio device: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
High Definition Audio Controller (rev 01)
03:03.0 Communication controller: Red Hat, Inc Virtio console
03:04.0 SCSI storage controller: Red Hat, Inc Virtio block device
03:07.0 Unclassified device [00ff]: Red Hat, Inc Virtio memory balloon
03:08.0 Unclassified device [00ff]: Red Hat, Inc Virtio RNG
<domain type='kvm' id='20'>
<name>ubuntu16.04-q35</name>
<uuid>cb514980-808a-47ee-85cd-8e2b44574f9a</uuid>
<description>testing with q35</description>
<memory unit='KiB'>16777216</memory>
<currentMemory unit='KiB'>16777216</currentMemory>
<vcpu placement='static'>4</vcpu>
<resource>
<partition>/machine</partition>
</resource>
<os>
<type arch='x86_64' machine='pc-q35-2.5'>hvm</type>
<loader readonly='yes'
type='pflash'>/usr/share/OVMF/OVMF_CODE.fd</loader>
<nvram>/var/lib/libvirt/qemu/nvram/ubuntu16.04-q35_VARS.fd</nvram>
</os>
<features>
<acpi/>
<apic/>
<pae/>
<vmport state='off'/>
</features>
<cpu mode='custom' match='exact'>
<model fallback='allow'>Haswell</model>
<vendor>Intel</vendor>
<feature policy='require' name='invtsc'/>
<feature policy='require' name='abm'/>
<feature policy='require' name='pdpe1gb'/>
<feature policy='require' name='rdrand'/>
<feature policy='require' name='f16c'/>
<feature policy='require' name='osxsave'/>
<feature policy='require' name='pdcm'/>
<feature policy='require' name='xtpr'/>
<feature policy='require' name='tm2'/>
<feature policy='require' name='est'/>
<feature policy='require' name='vmx'/>
<feature policy='require' name='ds_cpl'/>
<feature policy='require' name='monitor'/>
<feature policy='require' name='dtes64'/>
<feature policy='require' name='pbe'/>
<feature policy='require' name='tm'/>
<feature policy='require' name='ht'/>
<feature policy='require' name='ss'/>
<feature policy='require' name='acpi'/>
<feature policy='require' name='ds'/>
<feature policy='require' name='vme'/>
</cpu>
<clock offset='utc'>
<timer name='rtc' tickpolicy='catchup'/>
<timer name='pit' tickpolicy='delay'/>
<timer name='hpet' present='no'/>
</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/kvm-spice</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/home/dbrowne/storage/ssd/xubuntu1604.img'/>
<backingStore/>
<target dev='vda' bus='virtio'/>
<boot order='2'/>
<alias name='virtio-disk0'/>
<address type='pci' domain='0x0000' bus='0x02' slot='0x04'
function='0x0'/>
</disk>
<disk type='block' device='cdrom'>
<driver name='qemu' type='raw'/>
<backingStore/>
<target dev='sda' bus='sata'/>
<readonly/>
<boot order='1'/>
<alias name='sata0-0-0'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<controller type='usb' index='0' model='ich9-ehci1'>
<alias name='usb'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1d'
function='0x7'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci1'>
<alias name='usb'/>
<master startport='0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1d'
function='0x0' multifunction='on'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci2'>
<alias name='usb'/>
<master startport='2'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1d'
function='0x1'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci3'>
<alias name='usb'/>
<master startport='4'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1d'
function='0x2'/>
</controller>
<controller type='sata' index='0'>
<alias name='ide'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1f'
function='0x2'/>
</controller>
<controller type='pci' index='0' model='pcie-root'>
<alias name='pcie.0'/>
</controller>
<controller type='pci' index='1' model='dmi-to-pci-bridge'>
<model name='i82801b11-bridge'/>
<alias name='pci.1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1e'
function='0x0'/>
</controller>
<controller type='pci' index='2' model='pci-bridge'>
<model name='pci-bridge'/>
<target chassisNr='2'/>
<alias name='pci.2'/>
<address type='pci' domain='0x0000' bus='0x01' slot='0x01'
function='0x0'/>
</controller>
<controller type='pci' index='3' model='pcie-root-port'>
<model name='ioh3420'/>
<target chassis='1' port='0x1'/>
<alias name='pci.3'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1c'
function='0x0' multifunction='on'/>
</controller>
<controller type='virtio-serial' index='0'>
<alias name='virtio-serial0'/>
<address type='pci' domain='0x0000' bus='0x02' slot='0x03'
function='0x0'/>
</controller>
<interface type='network'>
<mac address='52:54:00:a7:1b:29'/>
<source network='default' bridge='virbr0'/>
<target dev='vnet0'/>
<model type='virtio'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x02' slot='0x01'
function='0x0'/>
</interface>
<serial type='pty'>
<source path='/dev/pts/3'/>
<target port='0'/>
<alias name='serial0'/>
</serial>
<console type='pty' tty='/dev/pts/3'>
<source path='/dev/pts/3'/>
<target type='serial' port='0'/>
<alias name='serial0'/>
</console>
<channel type='spicevmc'>
<target type='virtio' name='com.redhat.spice.0' state='connected'/>
<alias name='channel0'/>
<address type='virtio-serial' controller='0' bus='0' port='1'/>
</channel>
<input type='tablet' bus='usb'>
<alias name='input0'/>
</input>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<graphics type='spice' port='5900' autoport='yes' listen='0.0.0.0'>
<listen type='address' address='0.0.0.0'/>
</graphics>
<sound model='ich6'>
<alias name='sound0'/>
<address type='pci' domain='0x0000' bus='0x02' slot='0x02'
function='0x0'/>
</sound>
<video>
<model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1'/>
<alias name='video0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01'
function='0x0'/>
</video>
<hostdev mode='subsystem' type='pci' managed='yes'>
<driver name='vfio'/>
<source>
<address domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
</source>
<alias name='hostdev0'/>
<address type='pci' domain='0x0000' bus='0x03' slot='0x00'
function='0x0' multifunction='on'/>
</hostdev>
<hostdev mode='subsystem' type='pci' managed='yes'>
<driver name='vfio'/>
<source>
<address domain='0x0000' bus='0x01' slot='0x00' function='0x1'/>
</source>
<alias name='hostdev1'/>
<address type='pci' domain='0x0000' bus='0x03' slot='0x00'
function='0x1' multifunction='on'/>
</hostdev>
<redirdev bus='usb' type='spicevmc'>
<alias name='redir0'/>
</redirdev>
<redirdev bus='usb' type='spicevmc'>
<alias name='redir1'/>
</redirdev>
<memballoon model='virtio'>
<alias name='balloon0'/>
<address type='pci' domain='0x0000' bus='0x02' slot='0x07'
function='0x0'/>
</memballoon>
<rng model='virtio'>
<backend model='random'>/dev/random</backend>
<alias name='rng0'/>
<address type='pci' domain='0x0000' bus='0x02' slot='0x08'
function='0x0'/>
</rng>
</devices>
<seclabel type='dynamic' model='apparmor' relabel='yes'>
<label>libvirt-cb514980-808a-47ee-85cd-8e2b44574f9a</label>
<imagelabel>libvirt-cb514980-808a-47ee-85cd-8e2b44574f9a</imagelabel>
</seclabel>
</domain>
On Sun, May 1, 2016 at 7:41 PM, Okky Hendriansyah <okky.htf at gmail.com>
wrote:
> On Mon, May 2, 2016 at 5:01 AM, Blank Field <ihatethisfield at gmail.com>
> wrote:
>
>> On May 2, 2016 12:53 AM, "Zir Blazer" <zir_blazer at hotmail.com> wrote:
>> >
>> > If I recall correctly, doing VGA Passthrough in Linux presented
>> different issues that those that you're used to in Windows. The major
>> difference was that Windows and the Video Card Drivers doesn't mind if you
>> do something like attaching a 2014 PCI Express Video Card directly to the
>> 1996 440FX PCI Host Bridge, a configuration that is physically impossible,
>> but that in virtualized enviroments works in a miracleously way simply
>> because PCI and PCIe are compatible at the protocol level.
>>
>> I can confirm that, i remember a slide from AW's presentation where it is
>> said that windows doesn't care about topology, but linux does.
>> It was one of the reasons why the Q35 machine could be desired.
>>
>> Also, it is retarded, but possible to attach ioh3402s to 440FX. On the
>> other side, with Q35 you get better USB and AHCI(sata) controllers.
>> Which you don't care about because of virtio-scsi existence.
>>
>
> Hmm, I have tried passing through GPU to SUSE Linux Enterprise 11 SP3 the
> same way I did on Windows 10, on plain i440FX and had no issues. Even the
> installation process of the guest ran directly on my real monitor. Here's
> the exact script that I use at that time [1].
>
> [1] http://pastebin.com/nvihTuAz
>
> Best regards,
> Okky Hendriansyah
>
> _______________________________________________
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> vfio-users at redhat.com
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>
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