linux-kernel - Re: [PATCH] [6/8] Account overlapped mappings in end_pfn

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Date:	Mon, 11 Feb 2008 07:12:37 -0800
From:	Arjan van de Ven <arjan@...radead.org>
To:	Andi Kleen <ak@...e.de>
Cc:	ying.huang@...el.com, tglx@...utronix.de, mingo@...e.hu,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [6/8] Account overlapped mappings in end_pfn_map

On Mon, 11 Feb 2008 10:34:34 +0100 (CET)
Andi Kleen <ak@...e.de> wrote:

> 
> When end_pfn is not aligned to 2MB (or 1GB) then the kernel might
> map more memory than end_pfn. Account this in end_pfn_mapped.

we need to fix this btw; mapping memory that doesn't really exist
is a rather nasty trap with cpu prefetching and the like.


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