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Date: Tue, 06 Nov 2007 09:00:08 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Jeremy Fitzhardinge <jeremy@goop.org>
CC: "Eric W. Biederman" <ebiederm@xmission.com>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
       Mikael Petterson <mikpe@it.uu.se>
Subject: Re: [GIT PULL] x86 setup: correct booting on 486 (revised)
References: <200711050358.lA53wlho003349@tazenda.hos.anvin.org>	<alpine.LFD.0.999.0711050842360.15101@woody.linux-foundation.org>	<472F5941.2060507@zytor.com>	<alpine.LFD.0.999.0711051006060.15101@woody.linux-foundation.org>	<472F61C8.4040300@zytor.com>	<alpine.LFD.0.999.0711051035090.15101@woody.linux-foundation.org> <m1pryoa1f6.fsf@ebiederm.dsl.xmission.com> <472F7D8D.8050505@zytor.com> <472F826E.3050008@goop.org> <472F85F2.6040501@zytor.com> <472FBC83.5060509@goop.org> <472FBF40.1010300@zytor.com> <472FC0F3.10102@goop.org> <472FC401.9020202@zytor.com> <47309389.3080403@goop.org> <47309608.9030200@zytor.com> <47309C85.6030904@goop.org>
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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