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Date:	Thu, 15 Feb 2007 23:23:35 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Andi Kleen <ak@....de>, linux-kernel@...r.kernel.org,
	virtualization@...ts.osdl.org, xen-devel@...ts.xensource.com,
	Chris Wright <chrisw@...s-sol.org>,
	Zachary Amsden <zach@...are.com>,
	Ian Pratt <ian.pratt@...source.com>,
	Christian Limpach <Christian.Limpach@...cam.ac.uk>,
	Christoph Lameter <clameter@....com>
Subject: Re: [patch 11/21] Xen-paravirt: Add apply_to_page_range() which applies
 a function to a pte range.

Andrew Morton wrote:
> I guess your pte-at-a-time walker could be quite simply implemented underneath
> the smaps pmd-at-a-time walker.
>   

Yes, converting should be pretty simple.  There aren't many users in
Xen, but they are moderately performance critical (fork, exec and exit),
so using batching would be good.

    J
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