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Re: [Xen-devel] bimodal backend operation


  • To: Jan Beulich <jbeulich@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <keir@xxxxxxxxxxxxx>
  • Date: Tue, 09 Jan 2007 12:38:56 +0000
  • Delivery-date: Tue, 09 Jan 2007 04:38:38 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: Accz6yCQXu/Wop/eEdul2wAX8io7RQ==
  • Thread-topic: [Xen-devel] bimodal backend operation

I prefer Gerd's solution. Tools can set a default value for the 'protocol
version', suitable for older guests who cannot set it themselves.

 -- Keir

On 9/1/07 11:11, "Jan Beulich" <jbeulich@xxxxxxxxxx> wrote:

> Now that the 32on64 patches have mostly been merged, what is the plan wrt
> making the non-compatible backends bimodal capable? While Gerd's suggested
> approach is clearly less involved than mine, I continue to dislike the idea of
> having to touch the frontends so that those can inform the backend about
> their protocol version; I had hoped that this can be done fully backward
> compatibly (except perhaps for pv drivers in hcm guests) by allowing the
> backend to learn the address size of the guest, which the tools can know
> pretty early during domain creation.
> 
> Thanks, Jan
> 
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> http://lists.xensource.com/xen-devel


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