Re: [RFC] Unify KVM kernel-space and user-space code into a singleproject

[Avi Kivity]

On 03/21/2010 11:00 PM, Ingo Molnar wrote:
> * Avi Kivity<avi@xxxxxxxxxx>  wrote:
>
>    
> > On 03/21/2010 09:59 PM, Ingo Molnar wrote:
> >      
> > > Frankly, i was surprised (and taken slightly off base) by both Avi and Anthony
> > > suggesting such a clearly inferior "add a demon to the guest space" solution.
> > > It's a usability and deployment non-starter.
> > >        
> > It's only clearly inferior if you ignore every consideration against it.
> > It's definitely not a deployment non-starter, see the tons of daemons that
> > come with any Linux system. [...]
> >      
> Avi, please dont put arguments into my mouth that i never made.
>    

Sorry, that was not the intent.  I meant that putting things into the 
kernel have disadvantages that must be considered.

> My (clearly expressed) argument was that:
>
>      _a new guest-side demon is a transparent instrumentation non-starter_
>
> What is so hard to understand about that simple concept? Instrumentation is
> good if it's as transparent as possible.
>
> Of course lots of other features can be done via a new user-space package ...
>    

I believe you can deploy this daemon via a (default) package, without 
any hassle to users.

--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

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