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

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

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.


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