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

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Message-Id: <1254833974.14541.1306.camel@macbook.infradead.org>
Date:	Tue, 06 Oct 2009 13:59:34 +0100
From:	David Woodhouse <dwmw2@...radead.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Jeff Chua <jeff.chua.linux@...il.com>, Valdis.Kletnieks@...edu,
	Tomasz Chmielewski <mangoo@...g.org>,
	Daniel J Blueman <daniel.blueman@...il.com>,
	Byron Stanoszek <bstanoszek@...time.com>,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	Hugh Dickins <hugh.dickins@...cali.co.uk>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Hugh Dickins <hugh@...itas.com>
Subject: Re: 2.6.32-rc3: low mem - only 378MB on x86_32 with 64GB. Why?

On Mon, 2009-10-05 at 17:30 -0700, Linus Torvalds 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.

We've been running PPC64 with 32-bit userspace for a long time, so most
of the issues with the 32-bit compat code ought to be dealt with.

There may be a few arch-specific issues for x86_64/i386, but not many.

-- 
dwmw2

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