Re: [BUG] qemu git error with virgl

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

Cc'ing Gerd + patch author/reviewer.

On 1/2/21 2:11 PM, Torsten Wohlfarth wrote:
> Hello,
> 
> i can't start any system if i use virgl. I get the following error:
> 
> qemu-x86_64: ../ui/console.c:1791: dpy_gl_ctx_create: Assertion
> `con->gl' failed.
> ./and.sh: line 27: 3337167 Aborted                 qemu-x86_64 -m 4096
> -smp cores=4,sockets=1 -cpu host -machine pc-q35-4.0,accel=kvm -device
> virtio-vga,virgl=on,xres=1280,yres=800 -display sdl,gl=on -device
> intel-hda,id=sound0,msi=on -device
> hda-micro,id=sound0-codec0,bus=sound0.0,cad=0 -device qemu-xhci,id=xhci
> -device usb-tablet,bus=xhci.0 -net
> nic,macaddr=52:54:00:12:34:62,model=e1000 -net
> tap,ifname=$INTERFACE,script=no,downscript=no -drive
> file=/media/daten2/image/lineageos.qcow2,if=virtio,index=1,media=disk,cache=none,aio=threads
> 
> Set 'tap3' nonpersistent
> 
> i have bicected the issue:
> 
> towo:Defiant> git bisect good
> b4e1a342112e50e05b609e857f38c1f2b7aafdc4 is the first bad commit
> commit b4e1a342112e50e05b609e857f38c1f2b7aafdc4
> Author: Paolo Bonzini <pbonzini@redhat.com>
> Date:   Tue Oct 27 08:44:23 2020 -0400
> 
>     vl: remove separate preconfig main_loop
> 
>     Move post-preconfig initialization to the x-exit-preconfig. If
> preconfig
>     is not requested, just exit preconfig mode immediately with the QMP
>     command.
> 
>     As a result, the preconfig loop will run with accel_setup_post
>     and os_setup_post restrictions (xen_restrict, chroot, etc.)
>     already done.
> 
>     Reviewed-by: Igor Mammedov <imammedo@redhat.com>
>     Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> 
>  include/sysemu/runstate.h |  1 -
>  monitor/qmp-cmds.c        |  9 -----
>  softmmu/vl.c              | 95
> ++++++++++++++++++++---------------------------
>  3 files changed, 41 insertions(+), 64 deletions(-)
> 
> Regards,
> 
> Torsten Wohlfarth
> 
> 
>