12:30 p.m.
Still no luck getting the gtx 1080 to enable inside the VM. I see the code
is being generated in the xml with the hook. But I still get error code 43.
Someone mentioned doing it with eufi bios and that worked for them. So when
I get back from work today, perhaps ill give that a try.
On Mon, Mar 18, 2019, 6:10 AM Darin Schmidt <darinschmidt(a)gmail.com> wrote:
I have gotten the system to see the card, its in device manager. The
problem seems to be that I cannot use it in the VM because from what I have
been finding out is that it gets and error code 43. Nvidia drivers disable
the card if it detects that its being used in a VM. I have found some code
to use to hook it into the xml before_vm_starts.
99_mask_kvm
#!/usr/bin/python2
import hooking
domxml = hooking.read_domxml()
hyperv = domxml.getElementsByTagName('hyperv')[0]
smm = domxml.createElement('vendor_id')
smm.setAttribute('state', 'on')
smm.setAttribute('value', '1234567890ab')
hyperv.appendChild(smm)
features = domxml.getElementsByTagName('features')[0]
kvm = domxml.createElement('kvm')
hidden = domxml.createElement('hidden')
hidden.setAttribute('state', 'on')
kvm.appendChild(hidden)
features.appendChild(kvm)
hooking.write_domxml(domxml)
I am currently reinstalling the drivers to see if this helps.
kvm off and vender_id is now in the xml code that get generated when the
VM is started. Im going off of examples Im finding online. Perhaps I just
need to add the 10de to it instead of some generic # others are using.
On Mon, Mar 18, 2019 at 6:02 AM Nisim Simsolo <nsimsolo(a)redhat.com> wrote:
> Hi
>
> Vendor ID of Nvidia is usually 10de.
> You can locate 'vendor ID:product ID' by running lspci command, for
> example:
> [root@intel-vfio ~]# lspci -Dnn | grep -i nvidia
> 0000:03:00.0 VGA compatible controller [0300]: NVIDIA Corporation GK104GL
> [Quadro K4200] [10de:11b4] (rev a1)
> 0000:03:00.1 Audio device [0403]: NVIDIA Corporation GK104 HDMI Audio
> Controller [10de:0e0a] (rev a1)
> [root@intel-vfio ~]#
>
> In this example, the vendor ID of VGA controller is 10de and the product
> ID is 11b4
>
> Please bare in mind that you need to enable IOMMU, add pci-stub (prevent
> the host driver for using GPU device) and disable the default nouveau
> driver on the host Kernel command line.
> to do that:
> 1. Edit host /etc/sysconfig/grub and add the next to GRUB_CMDLINE_LINUX:
>
> - intel_iommu=on or amd_iommu=on
> - pci-stub.ids=10de:11b4,10de:0e0a
> - rdblacklist=nouveau
>
> 2. Regenerate the boot loader configuration using grub2-mkconfig command:
> # grub2-mkconfig -o /etc/grub2.cfg
> 3. Reboot the host.
> 4. Verify configuration:
> [root@intel-vfio ~]# cat /proc/cmdline
> BOOT_IMAGE=/vmlinuz-3.10.0-957.5.1.el7.x86_64
> root=/dev/mapper/vg0-lv_root ro crashkernel=auto rd.lvm.lv=vg0/lv_root
> rd.lvm.lv=vg0/lv_swap rhgb quiet pci-stub.ids=10de:11b4,10de:0e0a
> intel_iommu=on rdblacklist=nouveau LANG=en_US.UTF-8
> [root@intel-vfio ~]#
>
>
> After running this, you should be able to passthrough GPU to VM.
>
> BTW, why are you using engine-config and not doing it from oVirt UI or
> using virsh edit command?
>
> Thanks
>
>
> On Mon, Mar 18, 2019 at 1:52 AM Darin Schmidt <darinschmidt(a)gmail.com>
> wrote:
>
>> Hello all, im trying to figure out how to configure the custom
>> properties to enable my NVIDIA card to work in the VM. Its my understanding
>> that the drives dont work because it detects its in a VM......
>>
>> Im trying to do something like this:
>>
>> engine-config -s
>>
UserDefinedVMProperties="kvmhidden=^(true|false)$;{type=vendor_id;state={^(on|off)$;value=^([0-9])$}}"
>>
>>
>> But thats clearly not working. If I do this:
>>
>> engine-config -s
>>
UserDefinedVMProperties="kvmhidden=^(true|false)$;vendor_id={state=^(on|off)$;value=^([0-9])$}"
>>
>>
>> It works but, the options are messed up. Im not sure how to find out the
>> correct syntax to get this to work. Would appreciate any advice.
>>
>
>
> --
> Nisim Simsolo
> QE -Testing Engineer
> IRC: nsimsolo
> int phone - 8272305
> mobile - 054-4779934
>