linux-kernel - Re: [regression?] 2.6.26 floppy boot failure with kernel packed using 'upx'

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Message-Id: <200807102018.53147.elendil@planet.nl>
Date:	Thu, 10 Jul 2008 20:18:51 +0200
From:	Frans Pop <elendil@...net.nl>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ian Campbell <ijc@...lion.org.uk>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [regression?] 2.6.26 floppy boot failure with kernel packed using 'upx'

On Thursday 10 July 2008, H. Peter Anvin wrote:
> The issue with UPX is that UPX actually wants to replace the kernel
> decompressor, which also does other tasks (relocation and ELF parsing)
> in recent kernels.

It does save us about 5% though, which is quite substantial when you're 
talking about fitting a kernel on a boot floppy. For the past few kernel 
versions it has made the difference between being able to base 
installation floppies on the standard Debian kernel (generic 486 flavor) 
or having to come up with radical new solutions.

>From my tests for this issue it looks like .26 has grown so much that 
we've now reached that point anyway though :-(

Cheers,
FJP
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