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

From: Jan Engelhardt
Date: Mon Dec 17 2007 - 17:50:41 EST



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?
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