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Re: [Xen-devel] [rfc/patch] pv-on-hvm: make netfront grab PCI ressources

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] [rfc/patch] pv-on-hvm: make netfront grab PCI ressources.
From: Mark Williamson <mark.williamson@xxxxxxxxxxxx>
Date: Thu, 8 Feb 2007 17:55:55 +0000
Cc: "Petersson, Mats" <Mats.Petersson@xxxxxxx>, Gerd Hoffmann <kraxel@xxxxxxx>
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> Then it doesn't work.  Can you do that in xen?  I had the impression
> you'll have to use the qemu default nic ...
>
> > Or is the rtl8139 in the above example just another word for "some
> > network card in QEMU"?
>
> No, it matches the 8139 pci id.  For other cards it needs simliar code
> (and qemu a patch to add the xensource subsystem id ...).

Is there a future proofing issue here?  Future versions of the device models 
may use a different emulated network device (e.g. there's recurrent 
discussion about whether we ought to emulate a device that will give us 
better potential for IO batching).

Guests that are deployed now may still be running on future versions of Xen 
with updated device models.

Cheers,
Mark


-- 
Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!

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