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[Xen-devel] Re : Wishlist for Xen 4.2

  • To: "Teo En Ming \(Zhang Enming\)" <singapore.mr.teo.en.ming@xxxxxxxxx>, Ian Campbell <Ian.Campbell@xxxxxxxxxx>
  • From: David TECHER <davidtecher@xxxxxxxx>
  • Date: Mon, 19 Mar 2012 11:37:26 +0000 (GMT)
  • Cc: "xen-devel@xxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxx>
  • Delivery-date: Mon, 19 Mar 2012 11:37:40 +0000
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  • List-id: Xen developer discussion <xen-devel.lists.xen.org>


I did my tests for 25070 yesterday And it is Ok for this revision version.

last patches are the same http://www.davidgis.fr/download/xen-4.2_rev24798_gfx-passthrough-patchs.tar.bz2

I've just forgot to update my article for this revision. (done now!).

I will not have time to use Xen processes to submit patches.

HOWEVER in the process of applying my patches, the following commands need to be run so a few files are generated.

make tools
cd tools
make clean
cd ..

then apply patches. t
hen make xen tools stubdom
then make install-xen install-tools install-stubdom

So I don't think that applying my patches could be done directly in Xen sources.
Moreover it depends on the choice done by the user.

As a wise man said "KISS" Keep IT Simple and Stupid.

 -create a directory where to put all patches somewhere in Xen sources

- create a README.first to explain how to use this patches with required commands (see above).

  I can make a resume of my article if required  in the README.first and update the wiki infos if required 

This is the simple easy why I found.

We just need to have the specific patches somewhere in the Xen sources because VGA passthrough is something very specific.

Kind regards.


De : Teo En Ming (Zhang Enming) <singapore.mr.teo.en.ming@xxxxxxxxx>
À : Ian Campbell <Ian.Campbell@xxxxxxxxxx>
Cc : Teo En Ming (Zhang Enming) <singapore.mr.teo.en.ming@xxxxxxxxx>; David TECHER <davidtecher@xxxxxxxx>; "xen-devel@xxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxx>
Envoyé le : Lundi 19 mars 2012 12h05
Objet : Re: [Xen-devel] Wishlist for Xen 4.2

On 19/03/2012 18:40, Ian Campbell wrote:
> On Mon, 2012-03-19 at 10:17 +0000, Teo En Ming (Zhang Enming) wrote:
>> Dear Xen developers,
>> Could you add VGA passthrough to HVM guest patches in Xen 4.2?
> As previously discussed on xen-devel this requires someone who is
> interested in this feature to step up and prepare the patches for
> upstream, posting them per
> http://wiki.xen.org/wiki/SubmittingXenPatches, taking responsibility for
> implementing review feedback, reposting etc.
> I believe David Techer (CCd) was taking on this work but I don't think
> I've seen any patches yet. David, how is it going? Are we likely to see
> anything in time for 4.2? The release time table was discussed on
> xen-devel last week:
> http://lists.xen.org/archives/html/xen-devel/2012-03/msg00793.html
> Really we need to start seeing patches this week if there is to be any
> chance of these getting into 4.2.
> Ian.
I am very interested in Xen VGA passthrough patches.

David Techer's Xen VGA passthrough website:


Are his Xen VGA passthrough patches able to work with Xen 4.2-unstable
CHANGESET 25070? I can observe that his patches only apply up to
changeset 24888.

Thank you very much.

Yours sincerely,

Teo En Ming (Zhang Enming)

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