[PATCH v2 2/3] vfio/display: add xres + yres properties
Gerd Hoffmann
kraxel at redhat.com
Thu Feb 21 07:46:43 UTC 2019
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().
cheers,
Gerd
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