Re: [Xen-devel] Unable to get QXL vga working

[Fabio Fantoni <fantonifabio@xxxxxxxxxx>]

Il 13/06/2012 11:02, ZhouPeng ha scritto:
> On Mon, Jun 11, 2012 at 7:56 PM, Fabio Fantoni<fantonifabio@xxxxxxxxxx>  wrote:
> > Il 24/05/2012 13:28, ZhouPeng ha scritto:
> >
> > > On Thu, May 24, 2012 at 6:13 PM, Stefano Stabellini
> > > <stefano.stabellini@xxxxxxxxxxxxx>    wrote:
> > > > On Thu, 24 May 2012, ZhouPeng wrote:
> > > > > Sorry for late reply, I am not on this mail these days because of my
> > > > > work.
> > > > >
> > > > > I further test qxl-vga and I think I figure out the problem in some
> > > > > extend.
> > > > >
> > > > > If using qxl device, the default memory size of vga is 64M.
> > > > > Which will cause xen_ram_alloc(qemu/xen-all.c) fails.
> > > > >
> > > > > The exact reason is xc_domain_populate_physmap_exact fails, because
> > > > > xen-hypervisor
> > > > > fail,
> > > > > it's because of   alloc_domheap_pages(d, a->extent_order, a->memflags)
> > > > > fails in hypervisor.
> > > > >
> > > > > I am not very familiar with xen's memory management, Does 64M exceed
> > > > > xen's heap space in this context?
> > > > XL sets an upper bound of memory that can be allocated to the VM in
> > > > libxl__build_pre, calling xc_domain_setmaxmem.
> > > > My guess is that a 64MB allocation would go over that limit.
> > > > You could try increasing the limit manually changing the
> > > > xc_domain_setmaxmem call in libxl__build_pre, or you could try setting
> > > > videoram=64 in the VM config file.
> > > Your guess is absolutely right!
> > >
> > > But set videoram=128 or
> > > xc_domain_setmaxmem(ctx->xch, domid, info->target_memkb +
> > > LIBXL_MAXMEM_CONSTANT + 2 * 64 * 1024);
> > >
> > > Then I successfuly install qxl driver in win-hvm and QXL can work
> > > properly.
> > >
> > > I will send some patch to add qxl support to libxl.
> > I tried your 3 patches taken from the mailing list, it works but doesn't
> > solve qxl problems for me, on linux domU (Precise and Wheezy) xorg doesn't
> > start and on windows 7 I have heavy performance problem (unusable).
> Could you find qxl vga card  (named "Red Hat QXL GPU") in your
> windows hvm's device manager to make sure your qxl is working?
>
> My testing hvm-guest is Win XP.
>
> I played "Harry Potter" in my LAN smoothly, qxl gives
> great enhancement .
>
> Although I don't test win7 and linux, I think it should work for them.
> > I tried also with qemu 1.1.0 but nothing change.
> I am not sure qemu 1.1.0 accept all the patches for xen.
>
> Could you have a try of git://xenbits.xen.org/qemu-upstream-unstable.git
>
> It is build and installed by default, you should enable spice support.
> spice can be enabled like below:
>
> +++ b/tools/Makefile    Sat May 26 12:31:01 2012 +0800
> @@ -157,6 +157,7 @@ subdir-all-qemu-xen-dir subdir-install-q
>          --bindir=$(LIBEXEC) \
>          --datadir=$(SHAREDIR)/qemu-xen \
>          --disable-kvm \
> +       --enable-spice \
>
> > Does it work correctly for you? If so can I have some detail of your
> > configurations please?
> My vm.cfg:
>
> name = 'xpPro_spice'
> firmware_override = '/usr/lib/xen/boot/hvmloader'
> builder = 'hvm'
> memory = '1024'
> device_model_version = 'qemu-xen'
> device_model_override = '/usr/lib/xen/bin/qemu-system-i386'
> disk = [ 'file:/path-to-img/xpPro.img,ioemu:hda,w' ]
> vif = ['ip=192.168.1.112, type=ioemu, bridge=eth0, mac=00:21:97:CB:0E:7D']
> sdl=0
> vnc=0
> vncviewer=0
> serial = 'pty'
> vcpus=1
> usbdevice='tablet'
> #spice
> spice=1
> qxl=1
> #qxlram=64
> #qxlvram=64
> spiceport=6000
> spicehost='192.168.1.187'
> spicedisable_ticketing = 1
> spiceagent_mouse = 0 # (1|0)
>
> > For audio support this is needed too: (tested and working)
> > -device intel-hda,id=sound0 -device hda-duplex,id=sound0-codec0 on qemu
> > invocation and env QEMU_AUDIO_DRV=spice
> > Can you add audio support on libxl please?
> I think audio support can be considered after qxl accpted.
> >
Thanks for reply, qxl driver is installed, windows see qxl video card, 
already compiled qemu with spice with patch I send months ago, already 
tried git://xenbits.xen.org/qemu-upstream-unstable.git before 1.1.
Unfortunately the results are always the same.
Here a quick recording:
Windows 7 test: http://fantu.it/vari/spiceqxldebug1.mkv
Debian wheezy test: http://fantu.it/vari/spiceqxldebug2.mkv
Are not new but the result of the last test is the same.
I hope I can help you understand the problem.
If you need more information ask.

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