One-shot use is about the state of the art until we implement a way for vfio to do a bus reset on devices. A couple comments on the usage; we're using the x-vga option to vfio-pci and also using -vga qxl. Without specifying a bus for the vfio-pci device this will put qxl vga and vfio vga both on the root complex with no way to switch between them aside from completely disabling the device. This likely means qxl is disabled and effectively the same as booting with -vga none. Second oddity, vfio vga support wasn't added to the kernel until 3.9, how does this qemu command like work on 3.8?
-- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1175513 Title: Qemu 1.5.0 gpu clock control doesn`t work after guest reboot Status in QEMU: New Bug description: I run qemu from git with such command: qemu-system-x86_64 -nodefaults -m 4096 -smp 8,cores=4,threads=2,sockets=1 -cpu 'kvm64' -device usb-mouse -M q35 -vga qxl -no-hpet -boot once=c,menu=on -device vfio-pci,host=02:00.0,x-vga=on \ -enable-kvm -monitor stdio -chardev socket,path=/tmp/qga.sock,server,nowait,id=qga0 -device virtio-serial -device virtserialport,chardev=qga0,name=org.qemu.guest_agent.0 -net nic,vlan=0,model=e1000 -net tap,ifname=tap0,script=/etc/guest-ifup -usb -device intel-hda -device hda-duplex \ -drive file='/home/<user>/qemu/win7',if=none,id=drive-virtio-disk0,cache=writeback,aio=native,format=qed,discard=on -device virtio-blk-pci,drive=drive-virtio-disk0,id=virtio-disk \ -drive file='/dev/sr0',if=none,id=drive-ide1-0-0,media=cdrom,snapshot=off,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide1-0-0,id=ide1-0-0 \ -spice port=5930,disable-ticketing Before guest (Windows 7) reboot, videocard works in 3D mode with full frequency. But after reboot videocard works in 3D only with powersafe frequency. Then I must reboot host for recover gpu clock control. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1175513/+subscriptions
