Re: [Qemu-devel] [PATCH v2 2/3] vfio/display: add xres + yres properties

[Alex Williamson]

On Thu, 21 Feb 2019 08:46:43 +0100
Gerd Hoffmann <address@hidden> wrote:

>   Hi,
> 
> > > +    DEFINE_PROP_UINT32("xres", VFIOPCIDevice, display_xres, 0),
> > > +    DEFINE_PROP_UINT32("yres", VFIOPCIDevice, display_yres, 0),  
> > 
> > This is actually quite fun, I started my VM with arbitrary numbers and
> > the Windows GUI honored it every time.  Probably very useful for
> > playing with odd screen sizes.  I also tried to break it using
> > 1000000x1000000, but the display came up as 1920x1200, the maximum
> > resolution GVT-g supports for this type.  I don't see that QEMU is
> > bounding this though, do we depend on the mdev device to ignore it if
> > we pass values it cannot support?  
> 
> There is a check in vfio_display_edid_update().

Ok, so we're bounded within QEMU, that seems good.  Thanks,

Alex