linux-kernel - Re: [PATCH] [4/7] Don't use large pages to map the first 2/4MB of memory

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Message-ID: <20080312091950.GB31389@one.firstfloor.org>
Date:	Wed, 12 Mar 2008 10:19:50 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Eric Dumazet <dada1@...mosbay.com>
Cc:	Andi Kleen <andi@...stfloor.org>, andreas.herrmann3@....com,
	tglx@...utronix.de, mingo@...e.hu, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [4/7] Don't use large pages to map the first 2/4MB of memory

> Should we then change CONFIG_PHYSICAL_START from 0x100000 to 0x400000 ?

Yes that would be probably a good idea. This means for PAE and 64bit
kernels 2MB is ok too, for i386 non PAE 4MB. The SUSE 64bit kernels have been 
using that for quite some time.

-Andi
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