linux-kernel - Re: Uncompressed kernel doesn't build on x86

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Message-ID: <5284DA98.1060402@gmail.com>
Date:	Thu, 14 Nov 2013 09:13:44 -0500
From:	Austin S Hemmelgarn <ahferroin7@...il.com>
To:	Christian Ruppert <christian.ruppert@...lis.com>,
	Pavel Roskin <proski@....org>
CC:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Vineet Gupta <Vineet.Gupta1@...opsys.com>,
	Noam Camus <noamc@...hip.com>
Subject: Re: Uncompressed kernel doesn't build on x86_64

On 2013-11-14 03:32, Christian Ruppert wrote:
> 2. A patch to enable uncompressed x86 kernels. As stated above, I don't
>    think this makes a lot of sense in itself but it might serve as an
>    example for people working on other platforms with self-extracting
>    kernels and the nozip not-decompression algorithm might be useful on
>    those platforms as well. I only had a single x86-64 machine available
>    to test this, however, so some more testing might be required.

I disagree with the argument that an uncompressed x86 kernel doesn't
make sense, If you have a very fast boot device, then it is fully
conceivable that an uncompressed kernel could boot faster than a
compressed one.  I have seen a very large number of systems where the
LZO compression boots at least twice as fast as gzip or bz2 (because the
disks are fast enough that a few megabytes of size difference make much
less of an impact than a slow decompressor).
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