linux-kernel - Re: Re : [PATCH] Compressed ia32 ELF file generation for loading by Gujin 1/3

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Message-ID: <m1bqk4alz0.fsf@ebiederm.dsl.xmission.com>
Date:	Thu, 08 Feb 2007 05:10:43 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	vgoyal@...ibm.com
Cc:	Etienne Lorrain <etienne_lorrain@...oo.fr>,
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org
Subject: Re: Re : [PATCH] Compressed ia32 ELF file generation for loading by Gujin 1/3

Vivek Goyal <vgoyal@...ibm.com> writes:

> Kexec as a boot loader allows to load both ELF vmlinux file or bzImage.
> Hence for kdump, a user got the flexibility to either use vmlinux or 
> bzImage for dump captruing purposes. Hence I am concerned about both. 
>
> If real mode code is linked with vmlinux, then kdump will be broken.
>
> bzImage is relocatable. If a new kernel image format is introduced
> (compressed ELF), then I will prefer it to be a relocatable one
> (if possible).

If we do make the real mode code findable from a set of ELF headers
instead of a weird program header it should be an ELF note in the note
segment that tells us where to find or possibly contains the real mode
code.

Eric
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