Re: [Qemu-devel] [Qemu-ppc] [Bug 1674925] Re: Qemu PPC64 kvm no display if --device virtio-gpu-pci is selected

[luigiburdo]

Hi,

now i understand .  xics  have to be build in kernel and is needed by qemu 2.9 
with kvm.
if is not present in the kernel have the issue that i  been reported about xics.
I make a test on ubuntu 16.10 and on 17.04. the two distro are ppc 32 and 
generic.
i had build the stable kernel 4.10.5 two times with the same config  the  only 
parameter that  i had change  was the xics one was yes and the other was no.

On the two ubuntu version when  i run kernel without xics i had  the issue 
reported. if i run the kernel with xics enabled qemu 2.9 is working and was 
gave no issue.
but ...
on Fedora server 25 ppc64 if xics is present in the kernel the system (fedora) 
not run and freeze after the kernel bootstrap.


Hope all is understandable

Thanks
Luigi

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https://bugs.launchpad.net/bugs/1674925

Title:
  Qemu PPC64 kvm no display if  --device virtio-gpu-pci is selected

Status in QEMU:
  New

Bug description:
  Hi,
  i did many tests on qemu 2.8 on my BE machines and i found an issue that i 
think was need to be reported

  Test Machines BE 970MP

  if i setup qemu with

  qemu-system-ppc64 -M 1024 --display sdl(or gtk),gl=on --device virtio-
  gpu-pci,virgl --enable-kvm and so and so

  result is doubled window one is vga other is virtio-gpu-pci without
  any start of the VM . pratically i dont have any output of openbios
  and on the virtual serial output

  the same issue i found is if i select:
  qemu-system-ppc64 -M 1024 --display gtk(or sdl) --device virtio-gpu-pci 
--enable-kvm and so and so

  
  i had been try to change all the -M types of all kind of pseries without any 
positive result.

  Ciao 
  Luigi

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