I recently bought a Sapphire Radeon RX Vega 56 to replace my VMs GTX 970. On an ASUS Z97-A with Linux 4.19.8 (with the ACS override patch, and the Vega reset hack[0]), QEMU 3.0.0 and libvirt 4.5.0 I successfully isolate the GPU and can start the VM without having to reset the card.
Problem occurs when I try to install drivers: towards the end of the installation the screen blacks out and the VM seemingly freezes. When I try to reboot the VM it locks up when Windows is loading (during GPU driver initialization, I figure). This also occurs if I remove the reset hack patch, start the VM from a host reboot, and if I try resetting the card first (with and without [0]). During this freeze one of the four dedicated cores are at 100% load and `dmesg` gives me kvm [4642]: vcpu0, guest rIP: 0xfffff80422786067 ignored rdmsr: 0x641 kvm [4642]: vcpu0, guest rIP: 0xfffff8042278607d ignored rdmsr: 0x606 kvm [4642]: vcpu0, guest rIP: 0xfffff80422786261 ignored rdmsr: 0x606 kvm [4642]: vcpu0, guest rIP: 0xfffff804227810dc ignored rdmsr: 0x641 As far as I can tell, I'm using W10 build 14393 (output from the command `ver`). Is there something I've missed here? I'm using the i440FX architecture with OVMF UEFI firmware. VM XML is attached. Cheers. [0] https://gist.github.com/numinit/1bbabff521e0451e5470d740e0eb82fd
<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'> <name>vidya</name> <uuid>5dbc4cd4-8016-4364-8413-37fe4b39af12</uuid> <memory unit='KiB'>8388608</memory> <currentMemory unit='KiB'>8388608</currentMemory> <memoryBacking> <hugepages/> </memoryBacking> <vcpu placement='static'>4</vcpu> <iothreads>2</iothreads> <iothreadids> <iothread id='1'/> <iothread id='2'/> </iothreadids> <cputune> <vcpupin vcpu='0' cpuset='0'/> <vcpupin vcpu='1' cpuset='4'/> <vcpupin vcpu='2' cpuset='1'/> <vcpupin vcpu='3' cpuset='5'/> <iothreadpin iothread='1' cpuset='2'/> <iothreadpin iothread='2' cpuset='6'/> </cputune> <os> <type arch='x86_64' machine='pc-i440fx-2.11'>hvm</type> <loader readonly='yes' type='pflash'>/run/libvirt/nix-ovmf/OVMF_CODE.fd</loader> <nvram>/var/lib/libvirt/qemu/nvram/generic_VARS.fd</nvram> <bootmenu enable='no'/> </os> <features> <acpi/> <apic/> <hyperv> <relaxed state='on'/> <vapic state='on'/> <spinlocks state='on' retries='8191'/> <vendor_id state='on' value='whatever'/> </hyperv> <kvm> <hidden state='on'/> </kvm> <vmport state='off'/> </features> <cpu mode='host-passthrough' check='none'> <topology sockets='1' cores='2' threads='2'/> </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>/run/libvirt/nix-emulators/qemu-system-x86_64</emulator> <disk type='block' device='disk'> <driver name='qemu' type='raw' cache='none' io='threads' iothread='1'/> <source dev='/dev/disk/by-partlabel/vidya'/> <target dev='vda' bus='virtio'/> <boot order='2'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x10' function='0x0'/> </disk> <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <source file='/var/lib/libvirt/images/virtio-win-0.1.141.iso'/> <target dev='hda' bus='ide'/> <readonly/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> <controller type='pci' index='0' model='pci-root'/> <controller type='ide' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <controller type='virtio-serial' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </controller> <controller type='usb' index='0' model='piix3-uhci'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> </controller> <interface type='network'> <mac address='52:54:00:a2:34:2f'/> <source network='default'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </interface> <input type='mouse' bus='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x0d' function='0x0'/> </input> <input type='keyboard' bus='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x0f' function='0x0'/> </input> <input type='mouse' bus='ps2'/> <input type='keyboard' bus='ps2'/> <sound model='ich9'> <address type='pci' domain='0x0000' bus='0x00' slot='0x11' function='0x0'/> </sound> <hostdev mode='subsystem' type='usb' managed='yes'> <source> <vendor id='0x045e'/> <product id='0x028e'/> </source> <address type='usb' bus='0' port='1'/> </hostdev> <hostdev mode='subsystem' type='pci' managed='yes'> <source> <address domain='0x0000' bus='0x04' slot='0x00' function='0x0'/> </source> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0' multifunction='on'/> </hostdev> <hostdev mode='subsystem' type='pci' managed='yes'> <source> <address domain='0x0000' bus='0x04' slot='0x00' function='0x1'/> </source> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </hostdev> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> </memballoon> </devices> <qemu:commandline> <qemu:arg value='-object'/> <qemu:arg value='input-linux,id=mouse1,evdev=/dev/input/by-id/usb-La-VIEW_CO._QPAD_Gaming_Mouse-event-mouse'/> <qemu:arg value='-object'/> <qemu:arg value='input-linux,id=kbd2,evdev=/dev/input/by-id/usb-04d9_USB_Keyboard-event-if01'/> <qemu:arg value='-object'/> <qemu:arg value='input-linux,id=kbd1,evdev=/dev/input/by-id/usb-04d9_USB_Keyboard-event-kbd,grab_all=on,repeat=on'/> </qemu:commandline> </domain>
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