From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: pv_ops & gntdev?
Date: Wed, 25 Feb 2009 13:35:38 -0800
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To: Gerd Hoffmann <kraxel@redhat.com>
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Gerd Hoffmann wrote:
> Jeremy Fitzhardinge wrote:
>   
>> Hm, I hope not.  Doesn't it always end up using set_pte*?
>>     
>
> ptep_get_and_clear_full();
>
> See zap_pte_range() in mm/memory.c

Ah, right.  It could be changed to use ptep_modify_prot_start/commit.  
That would make it batchable too.  Slightly less good for native.

    J