Re: [Qemu-devel] Bug with qxl vga memory settings

[Fabio Fantoni]

Il 28/01/2013 11:59, Gerd Hoffmann ha scritto:
> > > After some tests with qemu-only I found that -global qxl-vga.vram_size=N
> > > and -global qxl-vga.ram_size=N (where N is for example 16384 or 65536)
> > > are bugged.
> > > qxl-0: ram/pri: 32 MB [region 0]
> > > qxl-0: vram/32: 0 MB [region 1]
> > Yep.  You'll get the minimum supported sizes due to the small numbers.
> >
> > > Qemu crashes when start using qxl.
> > Oops.  That shouldn't happen of course, I'll have a look.
> Doesn't reproduce (git master).
>
> cheers,
>    Gerd
>
>
>
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> 27/01/2013
I tried qemu-only with qemu (commit 
1356b98d3e95a85071e6bf9a99e8799e1ae1bbee) compiled from xen and qemu 
1.3.0 debian experimental package, they both crash if ram and vram are 
not setted correctly.
The command tried was this:
/usr/bin/qemu-system-x86_64 -name QUANTAL -k it -spice 
port=6002,tls-port=0,addr=0.0.0.0,disable-ticketing,agent-mouse=on -vga 
qxl -global qxl-vga.vram_size=16384 -global qxl-vga.ram_size=16384 -boot 
order=dc -smp 2,maxcpus=2 --global qxl-vga.debug=1 -global 
qxl-vga.guestdebug=20 -m 2016 -drive 
file=/mnt/vm/disks/QUANTALHVM.disk1.xm,if=ide,index=0,media=disk,format=raw,cache=writeback 
\
> -device virtio-serial \
> -chardev spicevmc,id=vdagent,name=vdagent \
> -device virtserialport,chardev=vdagent,name=com.redhat.spice.0 \
> -chardev stdio,id=seabios -device 
isa-debugcon,iobase=0x402,chardev=seabios

On xen with qxl active, when it is being used, qemu crashed in any case, 
there is a bug in xen but I need to know in advance if there are bugs 
also in qemu and/or spice.
This is the reason I'm testing qemu-only.
About spice without qxl, vdagent, spice audio and usbredirection are 
working also in xen (passing qemu parameters manually for now, I'll do 
the patches to have them in libxl).
If someone want to test qxl with xen fast and easy, a patch for qxl 
support is here (based on xen-unstable):
http://lists.xen.org/archives/html/xen-devel/2013-01/msg02321.html

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