linux-kernel - Re: Page scan keeps touching kernel text pages

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Message-ID: <20080225203852.GA15904@lazybastard.org>
Date:	Mon, 25 Feb 2008 21:38:53 +0100
From:	Jörn Engel <joern@...fs.org>
To:	Dave McCracken <dave.mccracken@...cle.com>
Cc:	Andy Whitcroft <apw@...dowen.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: Page scan keeps touching kernel text pages

On Mon, 25 February 2008 13:46:32 -0600, Dave McCracken wrote:
> On Monday 25 February 2008, Andy Whitcroft wrote:
> > I thought that init sections were deliberatly pushed to the end of the
> > kernel when linked, cirtainly on my laptop here that seems to be so.
> > That would make the first two "after" the kernel.  The other two appear
> > to be before the traditional kernel load address, which is 0x100000, so
> > those pages are before not in the kernel?
> 
> I believe the memory below the kernel load address on x86 is returned to the 
> free memory pool at some point during boot, which would explain those 
> addresses.

It does explain all pages.  Sorry about the noise from an mm-newbie.

Jörn

-- 
Joern's library part 14:
http://www.sandpile.org/
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