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

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Message-ID: <20070206063320.GA26462@in.ibm.com>
Date:	Tue, 6 Feb 2007 12:03:21 +0530
From:	Vivek Goyal <vgoyal@...ibm.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Etienne Lorrain <etienne_lorrain@...oo.fr>,
	linux-kernel@...r.kernel.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: [PATCH] Compressed ia32 ELF file generation for loading by Gujin 1/3

On Mon, Feb 05, 2007 at 10:16:59PM -0800, H. Peter Anvin wrote:
> Vivek Goyal wrote:
> >
> >I don't know much about Gujin, but advantage here seems to be that it has
> >capability to load elf files and that's why the attempt to turn kernel 
> >binary
> >into a compressed elf image. Why don't we then simply add an ELF header to
> >bzImage and Gujin and any ELF loader including Gujin, should be able to 
> >load
> >it? (As Eric had done in one of the implementations in the past?) Why to 
> >create the new infrastructure?
> >
> 
> Well, Gujin wants additional code too.
> 
> Putting an ELF header on bzImage broke some bootloaders (GRUB, I 
> believe), so that's not going to happen again.  See the relocatable 
> bzImage thread...
> 

That time, grub was working fine but lilo had broken on one of Andrew's
machine. I could not reproduce the problem on my setup and had no clue what
was the issue. Hence got rid of ELF header from bzImage which was non-essential
stuff for relocatable kernel. But that issue should be fixable.

Thanks
Vivek
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