我正在使用 Debian 10（测试）和内核 4.19.0-5_amd。我使用 KVM，并且想将不支持 UEFI 的 NVIDIA GTX 660Ti 显卡传递到我的虚拟机中。我读过很多关于如何在虚拟机上传递辅助 GPU 的教程，但这些内容确实令人困惑，因为大多数都使用支持 UEFI 的显卡。
我已遵循本教程中的所有步骤（https://heiko-sieger.info/running-windows-10-on-linux-using-kvm-with-vga-passthrough/）和下面我得到的结果：
我想通过代码 03:00.0 传递设备
我的设备不包含任何其他设备，因此我的 IOMMU 组是正确的！
在/etc/default/grub文件中，我有这一行：
GRUB_CMDLINE_LINUX_DEFAULT="quiet nomodeset intel_iommu=on i915.enable_hd_vgaarb=1"
我的虚拟机 xml 文件是：
<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
<name>WIN-DEV-SRV</name>
<uuid>7021e92f-ce81-4825-bdf9-7a5bfb84e9ef</uuid>
<title>Windows Development Server</title>
<metadata>
<libosinfo:libosinfo xmlns:libosinfo="http://libosinfo.org/xmlns/libvirt/domain/1.0">
<libosinfo:os id="http://microsoft.com/win/2k16"/>
</libosinfo:libosinfo>
</metadata>
<memory unit='KiB'>8388608</memory>
<currentMemory unit='KiB'>8388608</currentMemory>
<vcpu placement='static'>4</vcpu>
<os>
<type arch='x86_64' machine='pc-q35-3.1'>hvm</type>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
<hyperv>
<relaxed state='on'/>
<vapic state='on'/>
<spinlocks state='on' retries='8191'/>
</hyperv>
<kvm>
<hidden state='on'/>
</kvm>
<vmport state='off'/>
</features>
<cpu mode='host-model' check='partial'>
<model fallback='allow'/>
</cpu>
<clock offset='localtime'>
<timer name='rtc' tickpolicy='catchup'/>
<timer name='pit' tickpolicy='delay'/>
<timer name='hpet' present='no'/>
<timer name='hypervclock' present='yes'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<pm>
<suspend-to-mem enabled='no'/>
<suspend-to-disk enabled='no'/>
</pm>
<devices>
<emulator>/usr/bin/qemu-system-x86_64</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='raw' cache='none'/>
<source file='/media/shared/vms/WIN_DEV_SRV_vHDD.img'/>
<target dev='vda' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x0'/>
</disk>
<disk type='file' device='cdrom'>
<driver name='qemu' type='raw' cache='none'/>
<source file='/media/shared/others/Windows/All files/Applications/Virtual Machines/KVM-QEMU/VirtIO drivers/virtio-win-0.1.171-latest_2019-06-01.iso'/>
<target dev='sdc' bus='sata'/>
<readonly/>
<address type='drive' controller='0' bus='0' target='0' unit='2'/>
</disk>
<controller type='usb' index='0' model='qemu-xhci' ports='15'>
<address type='pci' domain='0x0000' bus='0x02' slot='0x00' function='0x0'/>
</controller>
<controller type='sata' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/>
</controller>
<controller type='pci' index='0' model='pcie-root'/>
<controller type='pci' index='1' model='pcie-root-port'>
<model name='pcie-root-port'/>
<target chassis='1' port='0x10'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0' multifunction='on'/>
</controller>
<controller type='pci' index='2' model='pcie-root-port'>
<model name='pcie-root-port'/>
<target chassis='2' port='0x11'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x1'/>
</controller>
<controller type='pci' index='3' model='pcie-root-port'>
<model name='pcie-root-port'/>
<target chassis='3' port='0x12'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x2'/>
</controller>
<controller type='pci' index='4' model='pcie-root-port'>
<model name='pcie-root-port'/>
<target chassis='4' port='0x13'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x3'/>
</controller>
<controller type='pci' index='5' model='pcie-root-port'>
<model name='pcie-root-port'/>
<target chassis='5' port='0x14'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x4'/>
</controller>
<controller type='pci' index='6' model='pcie-root-port'>
<model name='pcie-root-port'/>
<target chassis='6' port='0x15'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x5'/>
</controller>
<controller type='pci' index='7' model='pcie-root-port'>
<model name='pcie-root-port'/>
<target chassis='7' port='0x16'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x6'/>
</controller>
<interface type='bridge'>
<mac address='52:54:00:07:10:77'/>
<source bridge='bridge0'/>
<model type='virtio'/>
<address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
</interface>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<hostdev mode='subsystem' type='pci' managed='yes'>
<source>
<address domain='0x0000' bus='0x03' slot='0x00' function='0x0'/>
</source>
<address type='pci' domain='0x0000' bus='0x04' slot='0x00' function='0x0' multifunction='on'/>
</hostdev>
<hostdev mode='subsystem' type='pci' managed='yes'>
<source>
<address domain='0x0000' bus='0x03' slot='0x00' function='0x1'/>
</source>
<address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x0'/>
</hostdev>
<redirdev bus='usb' type='spicevmc'>
<address type='usb' bus='0' port='1'/>
</redirdev>
<redirdev bus='usb' type='spicevmc'>
<address type='usb' bus='0' port='2'/>
</redirdev>
<memballoon model='virtio'>
<address type='pci' domain='0x0000' bus='0x06' slot='0x00' function='0x0'/>
</memballoon>
</devices>
<qemu:commandline>
<qemu:arg value='-vga'/>
<qemu:arg value='none'/>
<qemu:arg value='-set'/>
<qemu:arg value='device.hostdev0.x-vga=on'/>
</qemu:commandline>
</domain>
当我使用命令启动虚拟机时
virsh start WIN-DEV-SRV
发生以下错误
error: Failed to start domain WIN-DEV-SRV
error: internal error: qemu unexpectedly closed the monitor: 2019-06-02T17:23:59.871333Z qemu-system-x86_64: -device vfio-pci,host=03:00.0,id=hostdev0,bus=pci.4,multifunction=on,addr=0x0: vfio 0000:03:00.0: failed getting region info for VGA region index 8: Invalid argument
device does not support requested feature x-vga
你知道如何修复这个错误吗？