Re: [PATCH] x86_64: fix problems due to use of "outb" to port 80 onsome AMD64x2 laptops, etc.

[Alan Cox]

> My understanding is that the linux starts in real mode, and uses the 
> BIOS for such things as reading the very first image.   

Not always. We may enter from 32bit in some cases, and we may also not
have a PC BIOS in the first place.
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