[Qemu-devel] [Bug 1185888] Re: -device nec-usb-xhci (usb 3) breaks VM snapshots

[T. Huth]

Snapshotting for XHCI has been implemented after QEMU 1.5.0:
http://git.qemu.org/?p=qemu.git;a=commitdiff;h=37352df30fbc38d1de464db8
... i.e. this should be working since QEMU 1.6.0. So I'm setting the status to 
"Fix Released" - if you still have problems with the latest version of QEMU, 
please feel free to open this ticket again.

** Changed in: qemu
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1185888

Title:
  -device nec-usb-xhci (usb 3) breaks VM snapshots

Status in QEMU:
  Fix Released

Bug description:
  Enabling the USB 3.0 controller apparently breaks "live" snapshotting.

  To reproduce:

      $ qemu-system-x86_64 -device nec-usb-xhci vm.qcow2

  then, at the Monitor:

      (qemu) savevm
      Error -22 while writing VM
      (qemu) 

  Instead, if I remove -device nec-usb-xhci from the cmdline, everything
  works fine.

  Some QEMU and OS info:

      $ qemu-system-x86_64 -version
      QEMU emulator version 1.5.0, Copyright (c) 2003-2008 Fabrice Bellard

      $ uname -a
      Linux localhost 3.2.0-4-amd64 #1 SMP Debian 3.2.41-2 x86_64 GNU/Linux

  The same also happens with 1.4.2. All compiled from source, not
  Debiabn package (btw, this *also* happens with distro packages/older
  versions).

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