[Qemu-devel] [Bug 1175513] Re: Qemu 1.5-git gpu clock control doesn`t work after guest reboot

From: Alex Williamson <alex.l.williamson@gmail.com>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [Bug 1175513] Re: Qemu 1.5-git gpu clock control doesn`t work after	guest reboot
Date: Mon, 06 May 2013 20:05:26 -0000	[thread overview]
Message-ID: <20130506200526.14597.53266.malone@gac.canonical.com> (raw)
In-Reply-To: 20130502091433.32599.11761.malonedeb@soybean.canonical.com

So the result is:

HD6850 - works fully, host hang on guest poweroff
GT210 - works fully, no host issues

Is that correct?  Are you attempting to rebind the HD6850 to host
drivers after qemu is shutdown, or does the host hang happen prior to
where that would be possible?  What about killing qemu with a ^C, does
it hang the host the same way?  If you could run the host in text mode
or with a serial or net console so we can see if there are any messages
prior to the hang, that would be extremely useful.

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https://bugs.launchpad.net/bugs/1175513

Title:
  Qemu 1.5-git gpu clock control doesn`t work after guest reboot

Status in The Linux Kernel:
  New
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.

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