linux-kernel - Re: [RFC] ELF Relocatable x86 and x86

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Date:	Tue, 8 Aug 2006 15:09:58 +0900
From:	Horms <horms@...ge.net.au>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>, vgoyal@...ibm.com,
	fastboot@...l.org, linux-kernel@...r.kernel.org,
	Jan Kratochvil <lace@...kratochvil.net>,
	Magnus Damm <magnus.damm@...il.com>,
	Linda Wang <lwang@...hat.com>
Subject: Re: [RFC] ELF Relocatable x86 and x86_64 bzImages

On Mon, Aug 07, 2006 at 09:32:23PM -0700, H. Peter Anvin wrote:
> Horms wrote:
> >
> >I also agree that it is non-intitive. But I wonder if a cleaner
> >fix would be to remove CONFIG_PHYSICAL_START all together. Isn't
> >it just a work around for the kernel not being relocatable, or
> >are there uses for it that relocation can't replace?
> >
> 
> Yes, booting with the 2^n existing bootloaders.

Ok, I must be confused then. I though CONFIG_PHYSICAL_START was
introduced in order to allow an alternative address to be provided for
kdump, and that previously it was hard-coded to some
architecture-specific value.

What I was really getting as is if it needs to be configurable at
compile time or not. Obviously there needs to be some sane default
regardless.

-- 
Horms
  H: http://www.vergenet.net/~horms/
  W: http://www.valinux.co.jp/en/

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