Re : [Qemu-devel] [PATCH 1/1] Make vmport an optional feature at run time.

[Sylvain Petreolle]

----- Message d'origine ----

> De : Anthony Liguori <address@hidden>
> À : Ian Kirk <address@hidden>
> Cc : address@hidden
> Envoyé le : Lundi, 25 Août 2008, 2h23mn 59s
> Objet : Re: [Qemu-devel] [PATCH 1/1] Make vmport an optional feature at run 
> time.
> 
> Ian Kirk wrote:
> > Anthony Liguori wrote:
> >
> >  
> >> Ian Kirk wrote:
> >>    
> >>> Hi,
> >>>
> >>> This is my first time sending a patch, so apologies for any errors.
> >>>
> >>> Patch makes vmport optionally initiated.
> >>>
> >>>      
> >> Why should it be optional?
> >>    
> >
> > I believe that VMware ESXi (and perhaps other hypervisors/emulators/etc)
> > doesn't work when it thinks it is running within virtual enviroment, as it
> > talks to vmport when booting (and fails in the current implemtnation -
> > perhaps it only works under itself?)
> >  
> 
> That's most likely because the vmport emulation isn't complete enough.
> 
> > If I comment init_vmport() out, it definately progresses further along the
> > boot sequence.
> >
> > Also, I guess, it gives you the option to better emulate a real PC (which
> > I assume doesn't have vmport).
> >  
> 
> I don't think that's very valuable in and of itself.  Moreover, there 
> are probably a lot more issues with respect to getting ESXi to run under 
> QEMU.  Adding another command line option to support something that we 
> don't know will ever work worries me.  It's just another knob for 
> someone to accidentally tweak.
> 
> Regards,
> 
> Anthony Liguori

Apart ESXi, there are software that behave differently if they detect a virtual 
environment.
Some of them completely refuse to work.


Regards,

Sylvain Petreolle