[Bug 1926952] Re: SPICE support broken with 6.0

[Launchpad Bug Tracker <1926952@bugs.launchpad.net>]

[Expired for QEMU because there has been no activity for 60 days.]

** Changed in: qemu
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1926952

Title:
  SPICE support broken with 6.0

Status in QEMU:
  Expired

Bug description:
  Using latest relase 6.0.0 while using Intel GVT-G DMA-BUF and SPICE
  for usb redirection Qemu won't start:

  qemu-system-x86_64: The console requires display DMABUF support.

  However just patching ui/console.c:

  if (flags & GRAPHIC_FLAGS_DMABUF &&
          !displaychangelistener_has_dmabuf(dcl)) {
          error_setg(errp, "The console requires display DMABUF support.");
          return false;
  }

  to always return true for dmabuf part works just fine:

  if (flags & GRAPHIC_FLAGS_DMABUF &&
          !displaychangelistener_has_dmabuf(dcl)) {
          error_setg(errp, "The console requires display DMABUF support.");
          return true;
  }

  This behavior wasn't in qemu 5.x version.

  To reproduce this bug need to use:

  /usr/bin/qemu-system-x86_64 \
  -machine q35 \
  -enable-kvm \
  -no-user-config \
  -nodefaults \
  -no-hpet \
  -display gtk,gl=on \
  -device pcie-root-port,port=0x0,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x1 \
  -device vfio-pci,id=hostdev2,driver=vfio-pci-nohotplug,romfile=/sys/devices/pci0000:00/0000:00:02.0/gvt_firmware,sysfsdev=/sys/bus/mdev/devices/1ae40c36-b180-4af0-8fab-c27de21f597d,x-igd-opregion=on,ramfb=on,display=on,xres=1920,yres=1080,bus=pcie.0,multifunction=on,addr=0x2 \
  -spice port=5900,addr=127.0.0.1,disable-ticketing=on

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