linux-kernel - Re: [GIT PULL] x86 setup: correct booting on 486 (revised)

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Message-ID: <47309D98.8080003@zytor.com>
Date:	Tue, 06 Nov 2007 09:00:08 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Linus Torvalds <torvalds@...ux-foundation.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>
Subject: Re: [GIT PULL] x86 setup: correct booting on 486 (revised)

Jeremy Fitzhardinge wrote:
> H. Peter Anvin wrote:
>> .notes : {
>>     *(.note.*)
>>     . = ALIGN(4);
>>     LONG(0);
>>     LONG(0);
>>     LONG(0);
>> }
>>
>> Am I missing something?
> 
> Oh, I suppose, but I never much liked putting data-definition into the
> linker script.
> 

I think it should be sparsely used, but stuff like simple end markers is 
pretty much what it's good for.

The main reason I want to avoid adding another header field is that the 
header is a finite resource; one of the many poor decisions in its 
original design was using a 2-byte jump at the top, so address 0x281 is 
the end of the universe.

	-hpa

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