Re: [ovirt-users] How to passthrough GPU to windows guest
On 28/03/17 02:12 +0800, yimao wrote:
Hi,
I'm trying to passthrough gpu card to windows 7 guest, but I got the
error code 43.
I use ovirt node: ovirt-node-ng-installer-ovirt-4.1-2017032304.iso and
ovirt-engine-appliance-4.1-20170322.1.el7.centos.noarch.rpm
I have added options "intel_iommu=on rdblacklist=nouveau
pci-stub.ids=10de:1380,10de:0fbc" to the grub.conf and attached these
devices to the guest. After I have installed the gpu's driver, I got
the error code 43.
Did I miss something? Any pointers or suggestions would be greatly appreciated.
You are most likely using consumer grade GPU that errors out in
Windows if it's running under virtualized environment. You could try
using the following hook (make sure it's in
/usr/libexec/vdsm/hooks/before_vm_start and it's executable bit is set
(chmod +x ...)).
Just copy paste the following block to a bash and try to start the VM
again.
cd /usr/libexec/vdsm/hooks/before_vm_start
cat << EOF >> 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', 'whatever')
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)
EOF
chmod +x 99_mask_kvm
Thanks in advance.
Yiimao Yang.