Re: [Qemu-ppc] [PATCHv5 0/4] Clean up compatibility mode handling

[Greg Kurz]

On Thu, 8 Jun 2017 14:17:39 +1000
David Gibson <address@hidden> wrote:

> On Fri, Jun 02, 2017 at 01:15:03PM +1000, David Gibson wrote:
> > This is a rebased and revised version of my patches revising CPU
> > compatiblity mode handling on ppc, last posted in November.  Since
> > then, many of the patches have already been merged (some for 2.9, some
> > since).  This is what's left.
> > 
> >  * There was conceptual confusion about what a compatibility mode
> >    means, and how it interacts with the machine type.  This cleans
> >    that up, clarifying that a compatibility mode (as an externally set
> >    option) only makes sense on machine types that don't permit the
> >    guest hypervisor privilege (i.e. 'pseries')
> > 
> >  * It was previously the user's (or management layer's) responsibility
> >    to determine compatibility of CPUs on either end for migration.
> >    This uses the compatibility modes to check that properly during an
> >    incoming migration.  
> 
> Anyone willing to give some review and/or testing, particularly for
> patch 2/4.
> 

I'm planning to re-run all the tests when migration of pre-2.10 machine
types is fixed.

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