linux-kernel - Re: [rfc] increase struct page size?!

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Message-ID: <Pine.LNX.4.64.0705211737450.24160@schroedinger.engr.sgi.com>
Date:	Mon, 21 May 2007 17:38:58 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
cc:	ak@...e.de, dada1@...mosbay.com, wli@...omorphy.com,
	npiggin@...e.de, linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-arch@...r.kernel.org
Subject: Re: [rfc] increase struct page size?!

On Tue, 22 May 2007, KAMEZAWA Hiroyuki wrote:

> For i386(32bit arch), there is not enough space for vmemmap.

I thought 32 bit would use flatmem? Is memory really sparse on 32 
bit? Likely difficult due to lack of address space?

> For 64bit arch, page flags are not exhausted yet.

Right.

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