linux-kernel - Re: Status of bzip2 and lzma kernel compression for ARM?

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Message-Id: <200906251104.02830.florian@openwrt.org>
Date:	Thu, 25 Jun 2009 11:04:01 +0200
From:	Florian Fainelli <florian@...nwrt.org>
To:	Mike Rapoport <mike@...pulab.co.il>
Cc:	Michael Opdenacker <michael-lists@...e-electrons.com>,
	Alain Knaff <alain@...ff.lu>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-arm-kernel@...ts.arm.linux.org.uk,
	linux-embedded mailing list <linux-embedded@...r.kernel.org>
Subject: Re: Status of bzip2 and lzma kernel compression for ARM?

Hi Michael, Mike

Le Thursday 25 June 2009 10:56:45 Mike Rapoport, vous avez écrit :
> Hi Michael,
>
> Michael Opdenacker wrote:
> > Hi Alain,
> >
> > I would like to test bzip2 and lzma compression on ARM.
> >
> > Would you mind telling me what the status of your patches on ARM is, now
> > that the x86  and architecture independent code has been merged? Have
> > you or has anyone already updated them for 2.6.30, or shall I update
> > them by myself?
>
> I'm not sure what exactly do you mean by "test bzip2 and lzma compression
> on ARM", but if you refer to internal initramfs compression, I can tell
> that I've used lzma compression on PXA270 and it works fine.

I think Michael refers to the lzma decompressor which allows you to use a 
lzma-compressed kernel as a (b)zImage with its architecture specific 
decompressor piggy-backed in the (b)zImage.

Such thing would also be very useful on MIPS and PowerPC as well.
-- 
Best regards, Florian Fainelli
Email : florian@...nwrt.org
http://openwrt.org
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