Re: [Qemu-devel] [RFC PATCH v3 3/3] fw/pci: Allocate IGD stolen memory

[Alex Williamson]

On Mon, 15 Feb 2016 11:31:41 +0100
Gerd Hoffmann <address@hidden> wrote:

>   Hi,
> 
> > The issue is in the VM and it occurs every time the option ROM is
> > executed.  Standard VGA text mode displays fine (ex. SeaBIOS version
> > string and boot menu), but any sort of extended graphics mode (ex. live
> > CD boot menu) tries to make use of the host memory area which
> > corresponds to the stolen memory area of the physical device.  
> 
> I'm wondering whenever we can just use seavgabios (and support standard
> vga modes only).

The reason we need the vBIOS is to turn on the LCD panel, which in turn
has this dependency on the stolen memory area.  I'd be pretty surprised
if a generic VGA BIOS affected the panel in any way.  Maybe seavgabios
could be used for desktop IGD assignment, though I don't really know
how to detect an attached panel.  Thanks,

Alex