• code 43 solved

  • extract ROM

  Prereq

Two graphic cards: A as best card and B card. * To extract ROM from best card mount B card in first slot (16x BOOT card) and A card in second slot * boot and

cat /proc/driver/nvidia/gpus/0000\:06\:00.0/information 
Model: 		 GeForce GTX 750 Ti
IRQ:   		 38
GPU UUID: 	 GPU-1a843395-eac3-0f8f-11f4-7edbb2a0e088
Video BIOS: 	 82.07.55.00.1b
Bus Type: 	 PCIe
DMA Size: 	 40 bits
DMA Mask: 	 0xffffffffff
Bus Location: 	 0000:06:00.0
Device Minor: 	 0

echo "0000:06:00.0" > /sys/bus/pci/drivers/vfio-pci/unbind
cd /sys/bus/pci/devices/0000\:06\:00.0
echo 1 > rom 
cat rom > /opt/vbios.dump
echo 0 > rom 

</code>

• Install ovfm
• https://scottlinux.com/2016/03/21/enable-hyper-v-enlightenments-in-kvm-for-better-windows-vm-performance/

/etc/modules

vfio
vfio_iommu_type1
vfio_pci
vfio_virqfd

update-initramfs -u

Create VM and customize configuration before start:

• In the “Overview” section, set your firmware to “UEFI” and Q35 BIOS
• In the “Processor” section write CPU model to “host-passthrough”

<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
...


<features>
	<hyperv>
		<vendor_id state='on' value='123456789ab'/>
	</hyperv>
	<kvm>
	<hidden state='on'/>
	</kvm>
</features>

    <hostdev mode='subsystem' type='pci' managed='yes'>
      <source>
        <address domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
      </source>
      <rom file='/opt/Palit.GTX750Ti.2048.140702.rom'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x09' 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='0x0a' function='0x0'/>
    </hostdev>

...
  <qemu:commandline>
    <qemu:arg value='-set'/>
    <qemu:arg value='device.hostdev0.x-vga=on'/>
  </qemu:commandline>
</domain>