Xen devel - Dec 2005 - Vesa compatible card not detected by dom0 kernel

Hi list:

   i found that my vesa card can''t be detected by the dom0 kernel and
subsequently vesafb can''t be brought up successfully, we do not mention
X.org system here. Seems that it is caused by the absence of the video
probing code, that originally packed in linux kernel (video.S).

   that code is 16-bit mode oriented, but not feat for dom0 booting up
procedure. Do you think it is reasonable to past it on xen kernel?

 

Miao Feng

Star SoftComm(China) Ltd

 



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>>> "Miao Feng" <miaofeng@starsoftcomm.com> 16.12.05
13:51:56 >>>
>Hi list:
>
>   i found that my vesa card can''t be detected by the dom0 kernel
and
>subsequently vesafb can''t be brought up successfully, we do not
mention
>X.org system here. Seems that it is caused by the absence of the
video
>probing code, that originally packed in linux kernel (video.S).
>
>   that code is 16-bit mode oriented, but not feat for dom0 booting
up
>procedure. Do you think it is reasonable to past it on xen kernel?
No, it is not. The para-virtualized kernel starts in protected mode,
and hence can''t (without complications) execute real-mode code.

Jan

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