Re: [Qemu-devel] [multiprocess RFC PATCH 36/37] multi-process: add the concept description to docs/devel/qemu-multiprocess

[Daniel P . Berrangé]

On Thu, Mar 07, 2019 at 11:46:19AM -0500, Michael S. Tsirkin wrote:
> On Thu, Mar 07, 2019 at 04:19:44PM +0000, Daniel P. Berrangé wrote:
> > On Thu, Mar 07, 2019 at 11:05:36AM -0500, Michael S. Tsirkin wrote:
> > > On Thu, Mar 07, 2019 at 02:51:20PM +0000, Daniel P. Berrangé wrote:
> > > > The broadening of vhost-user support is useful with that in much the
> > > > same way I imagine.
> > > 
> > > vhost user has more of an impact but is also a bigger maintainance
> > > burden as clients are packaged, can be restarted etc individually.
> > 
> > It feels like we're having/accepted that cost already though since
> > vhostuser exists today & has been expanding to cover more backends.
> 
> What I am trying to say is that we could eaily add support for
> extensions just for in-tree code since these don't create an API that
> needs to be maintained.
> 
> So e.g. we do not need feature negotiation.

Ah, I see what you mean now. Having stuff in-tree makes migration
saner too since we don't have combinatorial expansion of impls to
worry about testnig

> But yes, this could be an extension of vhost-user in some way.

Regards,
Daniel
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