From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: [patch 11/21] Xen-paravirt: Add
 apply_to_page_range() which applies a function to a pte range.
Date: Thu, 15 Feb 2007 23:23:35 -0800
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To: Andrew Morton <akpm@linux-foundation.org>
Cc: Zachary Amsden <zach@vmware.com>, xen-devel@lists.xensource.com, Ian Pratt <ian.pratt@xensource.com>, virtualization@lists.osdl.org, linux-kernel@vger.kernel.org, Chris Wright <chrisw@sous-sol.org>, Andi Kleen <ak@muc.de>, Christoph Lameter <clameter@sgi.com>, Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
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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