From: Gerd Hoffmann <kraxel@redhat.com>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Xen Development Mailing List <xen-devel@lists.xensource.com>
Subject: Re: pv_ops & gntdev?
Date: Wed, 25 Feb 2009 23:16:21 +0100 [thread overview]
Message-ID: <49A5C335.3010306@redhat.com> (raw)
In-Reply-To: <49A5A5A2.10001@goop.org>
Jeremy Fitzhardinge wrote:
> Gerd Hoffmann wrote:
>> Also: 2.6.18 gntdev does some funky interaction with the balloon driver.
>> What is the point in doing so?
>>
>
> Oh, the alloc_empty_pages_and_pagevec() stuff? It allocates some pages,
> just for their pfn slots, and then returns the underlying memory back to
> Xen. It uses the pfns to slot granted pages into.
Yep, gives pfn slot for the grant map. And a struct page too.
/me wonderes whenever that is required or whenever I could just map the
grants without asking the balloon driver for some slots ...
cheers,
Gerd
next prev parent reply other threads:[~2009-02-25 22:16 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-24 18:45 pv_ops & gntdev? Gerd Hoffmann
2009-02-24 21:18 ` Jeremy Fitzhardinge
2009-02-24 22:12 ` Gerd Hoffmann
2009-02-25 10:05 ` Gerd Hoffmann
2009-02-25 17:51 ` Jeremy Fitzhardinge
2009-02-25 18:37 ` Gerd Hoffmann
2009-02-25 20:06 ` Jeremy Fitzhardinge
2009-02-25 21:19 ` Gerd Hoffmann
2009-02-25 21:35 ` Jeremy Fitzhardinge
2009-02-25 21:43 ` Gerd Hoffmann
2009-02-25 21:48 ` Jeremy Fitzhardinge
2009-02-25 22:11 ` Gerd Hoffmann
2009-02-25 22:28 ` Jeremy Fitzhardinge
2009-02-25 22:42 ` Gerd Hoffmann
2009-02-25 22:59 ` Jeremy Fitzhardinge
2009-03-02 22:53 ` Gerd Hoffmann
2009-03-03 1:05 ` Jeremy Fitzhardinge
2009-03-03 22:59 ` Jeremy Fitzhardinge
2009-03-04 8:18 ` Gerd Hoffmann
2009-03-04 14:52 ` Gerd Hoffmann
2009-03-04 15:16 ` Jeremy Fitzhardinge
2009-03-04 15:32 ` Gerd Hoffmann
2009-02-25 18:56 ` Gerd Hoffmann
2009-02-25 20:10 ` Jeremy Fitzhardinge
2009-02-25 21:45 ` Gerd Hoffmann
2009-02-25 22:16 ` Gerd Hoffmann [this message]
2009-02-25 22:30 ` Jeremy Fitzhardinge
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