linux-kernel - Re: [GIT PULL] x86 setup: correct booting on 486DX4

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Message-ID: <472E5DAB.8080804@zytor.com>
Date:	Sun, 04 Nov 2007 16:02:51 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Mikael Petterson <mikpe@...uu.se>,
	Eric Biederman <ebiederm@...ssion.com>
Subject: Re: [GIT PULL] x86 setup: correct booting on 486DX4

Linus Torvalds wrote:
> 
> And Linux always did it correctly. I don't understand why you disagree, 
> and why Jeremy says
> 
> 	"Having successfully broken the rules for a long time so far, 
> 	 maybe we can get away with still cutting corners..."
> 
> when the fact is, we used to *not* cut corners, we used to *not* break the 
> rules, and what we used to do (a short jump immediately after setting PE) 
> was exactly what Intel always said you should do, and there is no question 
> what-so-ever about it.
> 

Apparently because the Intel documentation disagrees with itself. 
That's all.

	-hpa
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