device: 0.935
instruction: 0.869
graphic: 0.856
socket: 0.777
vnc: 0.596
boot: 0.593
mistranslation: 0.583
semantic: 0.510
network: 0.504
KVM: 0.267
other: 0.202
assembly: 0.066

Invalid DRM modifier in ScanoutDMABUF call
Description of problem:
`modifier` parameter in `ScanoutDMABUF` callback is always `0xffffffffffffff` (`DRM_FORMAT_RESERVED`)
Steps to reproduce:
1. Run QEMU with D-Bus display
2. Connect D-Bus display client and print modifier
Additional information: