WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] HYBRID: PV in HVM container

To: Keir Fraser <keir.xen@xxxxxxxxx>
Subject: Re: [Xen-devel] HYBRID: PV in HVM container
From: Ian Campbell <Ian.Campbell@xxxxxxxxxx>
Date: Tue, 28 Jun 2011 09:30:17 +0100
Cc: "Xen-devel@xxxxxxxxxxxxxxxxxxx" <Xen-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date: Tue, 28 Jun 2011 01:31:00 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <CA2F4550.1D251%keir.xen@xxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Organization: Citrix Systems, Inc.
References: <CA2F4550.1D251%keir.xen@xxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
On Tue, 2011-06-28 at 08:46 +0100, Keir Fraser wrote:
> On 28/06/2011 02:51, "Mukesh Rathor" <mukesh.rathor@xxxxxxxxxx> wrote:
> 
> >> To be clear, you intend for this to work with unmodified PV guests,
> >> right? All of this translation can easily be done in Xen, avoiding
> >> multiple paths needed in the guest kernel (not really tenable for
> >> upstreaming).
> >> 
> >>  -- Keir
> > 
> > Hi Keir,
> > 
> > Actually, I modified the PVops guest.  The changes in the pvops are
> > minimal and mostly confied to xen specific files. So I think it has
> > a fair shot of being upstreamed, at least, worth a shot. I will run
> > them by Jeremy/Konrad and get their opinions.
> 
> Well, maybe. But we now have HVM guests, PV guests, and PV-HVM guests. I'm
> not sure that adding explicitly HVM-PV guests as well isn't just a bloody
> mess.

Ideally this container could be used to accelerate existing 64 bit
guests (e.g. older distros running classic-Xen) unmodified (or at least
only with latent bugs fixed) too.

Getting something working with a modified guest seems like a useful
first step (to get to a working baseline) but I'm not sure it should be
the end goal.

Ian.


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel