Re: [Qemu-devel] [PATCH] Migration compatibility for serial

[Paolo Bonzini]

On 17/06/2015 13:40, Dr. David Alan Gilbert wrote:
> > Like Juan, I see where you're coming from.  But it's a slippery slope,
> > and upstream chose not to go down it.
> 
> Whatever choice upstream may have made, that was a long time ago
> and doesn't mean it can't change.

My question really is: what has changed for this choice to not make
sense anymore?

Backward migration is not supported upstream except between minor
releases.  It is really the same as in RHEL, except that a minor release
lasts a few years less. :)

Paolo