Re: [Qemu-devel] [PATCH 00/21] Kemari for KVM 0.2

[Anthony Liguori]

On 11/29/2010 11:18 AM, Paul Brook wrote:
> > On 11/29/2010 10:53 AM, Paul Brook wrote:
> >      
> > > > > Is this a fair summary: any device that supports live migration workw
> > > > > under Kemari?
> > > > >            
> > > > It might be fair summary but practically we barely have live migration
> > > > working w/o Kemari. In addition, last I checked Kemari needs additional
> > > > hooks and it will be too hard to keep that out of tree until all devices
> > > > get it.
> > > >          
> > > That's not what I've been hearing earlier in this thread.
> > > The responses from Yoshi indicate that Stefan's summary is correct.  i.e.
> > > the current Kemari implementation may require per-device hooks, but
> > > that's a bug and should be fixed before merging.
> > >        
> > It's actually really important that Kemari make use of an intermediate
> > layer such that the hooks can distinguish between a device access and a
> > recursive access.
> >      
> I'm failing to understand how this is anything other than running sed over
> block/*.c (or hw/*.c, depending whether you choose to rename the internal or
> external API).
>    

You're right, it's not a big deal, and requiring everything in hw use 
the new interface is not a bad idea.

If a device doesn't work with Kemari, that's okay as long as the 
non-Kemari case is essentially a nop.

Regards,

Anthony Liguori

> Paul
>