Jeremy Fitzhardinge wrote:
> H. Peter Anvin wrote:
>> Jeremy Fitzhardinge wrote:
>>
>>> You mean "is a real failure"? Or "is triggered by particular
>>> instructions"? It seems profoundly bogus (as in, surely DOS or
>>> something reads the framebuffer).
>>>
>>>
>>
>> A real failure (although only triggered from some variant of protected
>> mode -- paging off?)
>>
>
> Oh, it only happens in protected mode? So the answer to "how does the
> shadow framebuffer get populated?" is "real mode does it before
> switching to protected mode".
>
Sure, but that means frobbing the boot parameter structure, with
associated problems. I guess I'm not inherently opposed to it, but I'd
like to understand if there is a cleaner workaround first.
-hpa
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