linux-kernel - Re: 2.6.32-rc3: low mem - only 378MB on x86

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Date:	Wed, 14 Oct 2009 17:32:57 -0400
From:	lsorense@...lub.uwaterloo.ca (Lennart Sorensen)
To:	Frans Pop <elendil@...net.nl>
Cc:	Tvrtko Ursulin <tvrtko.ursulin@...hos.com>,
	torvalds@...ux-foundation.org, jeff.chua.linux@...il.com,
	Valdis.Kletnieks@...edu, mangoo@...g.org, daniel.blueman@...il.com,
	bstanoszek@...time.com, dave@...ux.vnet.ibm.com,
	hugh.dickins@...cali.co.uk, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, hugh@...itas.com
Subject: Re: 2.6.32-rc3: low mem - only 378MB on x86_32 with 64GB. Why?

On Tue, Oct 06, 2009 at 01:01:35PM +0200, Frans Pop wrote:
> Tvrtko Ursulin wrote:
> >> In fact, I wish more people did that, just so that we'd get better
> >> coverage of the 32-bit compat code. We occasionally find issues there,
> >> although I think it's getting rarer.
> > 
> > Maybe convince some distro to offer this setup as an option at least? I
> > always wondered why no one has, or maybe I missed it.
> 
> Debian has a 64-bit kernel for its 32-bit "i386" architecture (and also for 
> its 64-bit "amd64" architecture obviously):
> - for stable: http://packages.debian.org/lenny/linux-image-2.6.26-2-amd64
> - for unstable: http://packages.debian.org/sid/linux-image-2.6.30-2-amd64

I have been running that Debian setup for 5 years now.  It's great.
Other than 32 bit iptables not liking the 64bit kernel, I can't currently
recall any issues at any point.  Well and configure scripts often have to
be run with the 'linux32' wrapper to make them not try something stupid.

-- 
Len Sorensen
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