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

[H. Peter Anvin]

Jan Engelhardt wrote:
> On Dec 15 2007 17:46, Alan Cox wrote:
> > > 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.
>
> Computers without a PC BIOS (I'm trying to think of something, e.g.
> the typical SUN sparc64 box) should have other means of accessing a
> clocksource, no?

We were talking about x86 here, though.

Even on x86 we sometimes run from the 32-bit entrypoint.

	-hpa
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