Re: [Qemu-devel] [PATCH 0/3] migration: export cap/params to qdev props

[Eduardo Habkost]

On Fri, Jul 14, 2017 at 01:04:23PM +0800, Peter Xu wrote:
> On Wed, Jul 12, 2017 at 04:05:58PM -0300, Eduardo Habkost wrote:
> > On Wed, Jul 12, 2017 at 02:53:40PM +0800, Peter Xu wrote:
> > [...]
> > > These properties should only be used for debugging/testing purpose,
> > > and we should not guarantee any interface compatibility for them (just
> > > like HMP).
> > 
> > If we don't guarantee compatibility, the property names need to
> > be prefixed with "x-".
> 
> Indeed. Sorry I missed that.
> 
> But I'd say it is slightly awkward to add "x-" for all these (for me,
> "x-" means more like "this is not stable and experimental, use it
> carefully", while this does not suite for this series). Maybe I can
> just remove this sentence in commit log (I think I am just a little
> bit frightened by the compatibility problems)...

"x-" in property names doesn't mean "experimental", but just "not
part of the stable interface".  If you have the tiniest doubt
about command-line compatibility, I think it won't hurt to use
"x-".

-- 
Eduardo