Re: [Xen-devel] [PATCH v2 1/3] Add vmware_hw to xl.cfg

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Wed, 2014-09-03 at 08:45 +0100, Jan Beulich wrote:
> >>> On 02.09.14 at 20:24, <dslutz@xxxxxxxxxxx> wrote:
> > On 09/02/14 03:28, Jan Beulich wrote:
> >>>>> On 01.09.14 at 17:33, <dslutz@xxxxxxxxxxx> wrote:
> >>> So based on this, I picked the order:
> >>>
> >>> 0x40000000 is viridian, vmware or xen
> >>> 0x40000100 is vmware or xen
> >>> 0x40000200 is xen
> >> Is there really a point in enabling both Viridian and VMware extensions
> >> at the same time?
> > 
> > Not that I know of (and I do not want to say there there is no code
> > out there that can work with both).  Instead of an error or warning
> > I went with what xen is currently doing and that seabios was happy
> > to find xen at 0x40000200.
> > 
> > If the consensus is to ignore, or report an error or warning I will go that
> > way.  For now I am not planning on changing.
> 
> My personal take on this is that the hypervisor (or perhaps already
> the tools) should reject enabling both at the same time.

That sounds sensible to me.

Generally we seem to have the hypervisor check these things as a
backstop, to stop broken tools, but also check in the tools so we can
give a better error message.



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