Re: [Xen-devel] beginnings of allowing more than the basic 80x25 VGA screen resolution

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 4 Jul 2005, at 08:28, Jan Beulich wrote:

> Hmm, interesting. I would have hoped such thing would exist, but I
> can't see how it could work, since the code affected by
> CONFIG_VIDEO_SELECT (which is what in non-guest Linux deals with the
> vga= option) doesn't even exist in XenLinux. Further more, since XEN is
> a multiboot image, it would require infrastructure to switch back to
> real mode for issuing the necessary INT10-s in the guest kernel, which 
> I
> think is neither very desirable nor existing.
>
> So I must be missing something, but I'd need a pointer at where I would
> have to look for the alternative code.
We could certainly add a way to propagate the mode option through to 
the vga driver, but is the Linux vga driver really unable to switch 
modes without bios help? Is there support for a protected-mode vesa/vbe 
driver instead?
 -- Keir


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