[Bug 1856399] [NEW] Intel GVT-g works in X11, segfaults in wayland

[Simon Brand]

Public bug reported:

Hello,

I am using an uptodate Arch Linux 64bit with qemu version 4.2.0, but the 
problem was also present in older versions. The problem occurs with Linux 5.4 
and 4.19.
The problem also occurs with Debian as guest. I am running sway.
If I provide -vga std, then qemu works fine until I use the qemu window to 
switch to the vfio-pci device. There are no problems under X11/xwayland at all.

Commandline:
qemu-system-x86_64
    -enable-kvm
    -cpu host
    -smp 2
    -m 8192
    -display gtk,gl=on
    -device 
vfio-pci,sysfsdev=/sys/devices/pci0000:00/0000:00:02.0/[ID]/,x-igd-opregion=on,display=on
    -cdrom archlinux-2019.11.01-x86_64.iso
    -vga none

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1856399

Title:
  Intel GVT-g works in X11, segfaults in wayland

Status in QEMU:
  New

Bug description:
  Hello,

  I am using an uptodate Arch Linux 64bit with qemu version 4.2.0, but the 
problem was also present in older versions. The problem occurs with Linux 5.4 
and 4.19.
  The problem also occurs with Debian as guest. I am running sway.
  If I provide -vga std, then qemu works fine until I use the qemu window to 
switch to the vfio-pci device. There are no problems under X11/xwayland at all.

  Commandline:
  qemu-system-x86_64
      -enable-kvm
      -cpu host
      -smp 2
      -m 8192
      -display gtk,gl=on
      -device 
vfio-pci,sysfsdev=/sys/devices/pci0000:00/0000:00:02.0/[ID]/,x-igd-opregion=on,display=on
      -cdrom archlinux-2019.11.01-x86_64.iso
      -vga none

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