[Xen-devel] Re: special video mode numbers

[Keir Fraser <keir@xxxxxxxxxxxxx>]

On 19/6/07 13:03, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote:

> is there a particular reason you chose to use slightly different special mode
> numbers than Linux, ignoring VIDEO_CURRENT_MODE altogether? I think
> it wouldn't be bad to be in sync with Linux here, and I independently think
> that having a way to avoid mode switching altogether is good to have in
> case of possible problems on exotic hardware.

You mean specifically put back usual meanings of 0xffff,0xfffe, and also
include 'current' back into the special list at the correct place in the
range starting from 0x0f00? Sounds reasonable, I just doubted anyone really
uses those numbers. Getting back the 'use current' capability certainly
seems reasonable.

There's a slight question of what to do if 'no-real-mode' is specified.
Currently I assume 80x25 and hope that noone will really need to use that
boot option in anger! Another would be to assume nothing and not allow any
usage of vga at all.

 -- Keir


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