12:10 p.m.
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