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

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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Follow-Ups:
- Re: [PATCH] x86_64: fix problems due to use of "outb" to port 80 on some AMD64x2 laptops, etc.
  - From: "H. Peter Anvin" <[email protected]>

References:
- [PATCH] x86_64: fix problems due to use of "outb" to port 80 on some AMD64x2 laptops, etc.
  - From: "David P. Reed" <[email protected]>
- Re: [PATCH] x86_64: fix problems due to use of "outb" to port 80 on some AMD64x2 laptops, etc.
  - From: Ingo Molnar <[email protected]>
- Re: [PATCH] x86_64: fix problems due to use of "outb" to port 80 on some AMD64x2 laptops, etc.
  - From: "H. Peter Anvin" <[email protected]>
- Re: [PATCH] x86_64: fix problems due to use of "outb" to port 80 on some AMD64x2 laptops, etc.
  - From: Pavel Machek <[email protected]>
- Re: [PATCH] x86_64: fix problems due to use of "outb" to port 80 on some AMD64x2 laptops, etc.
  - From: "H. Peter Anvin" <[email protected]>
- Re: [PATCH] x86_64: fix problems due to use of "outb" to port 80 on some AMD64x2 laptops, etc.
  - From: Alan Cox <[email protected]>
- Re: [PATCH] x86_64: fix problems due to use of "outb" to port 80 on some AMD64x2 laptops, etc.
  - From: "David P. Reed" <[email protected]>
- Re: [PATCH] x86_64: fix problems due to use of "outb" to port 80 on some AMD64x2 laptops, etc.
  - From: "H. Peter Anvin" <[email protected]>
- Re: [PATCH] x86_64: fix problems due to use of "outb" to port 80 on some AMD64x2 laptops, etc.
  - From: "David P. Reed" <[email protected]>
- Re: [PATCH] x86_64: fix problems due to use of "outb" to port 80 on some AMD64x2 laptops, etc.
  - From: Alan Cox <[email protected]>

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