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

[David Gibson]

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.

-- 
David Gibson                    | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au  | minimalist, thank you.  NOT _the_ _other_
                                | _way_ _around_!
http://www.ozlabs.org/~dgibson

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