Re: [PATCH 3/8] conf, qemu: Add support for shmem model

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On Fri, Oct 07, 2016 at 10:53:48AM -0400, John Ferlan wrote:
> 
> 
> On 09/27/2016 08:24 AM, Martin Kletzander wrote:
> > Just the default one now, new ones will be added in following commits.
> > 
> > Signed-off-by: Martin Kletzander <mkletzan@xxxxxxxxxx>
> > ---
> >  docs/schemas/domaincommon.rng                     |  9 +++++
> >  src/conf/domain_conf.c                            | 44 +++++++++++++++++------
> >  src/conf/domain_conf.h                            |  8 +++++
> >  src/libvirt_private.syms                          |  2 ++
> >  src/qemu/qemu_command.c                           | 11 +++++-
> >  tests/qemuxml2argvdata/qemuxml2argv-shmem.xml     |  2 ++
> >  tests/qemuxml2xmloutdata/qemuxml2xmlout-shmem.xml |  8 +++++
> >  7 files changed, 72 insertions(+), 12 deletions(-)
> > 
> 
> docs/formatdomain.html.in ??
> 
> Just so I'm sure I understand ;-)... This is the existing 'model type'
> for 'shmem' being implemented as the "default" (e.g. 0 entry) because we
> know at some short time in the future we're going to be adding a new
> type (or two).
> 
> Since the <model type='ivshmem'> is now going to be the default on
> output, we should explain in some way... and encourage choosing
> something else because "at some point in the future" ;-) we'll deprecate
> this one (whenever that dire time exists who knows).
> 
> Making sure #2 - we don't have to care about save files, true?  Since
> the default will be to now to ShmemDefFormat the <model> - a save file
> read on an older libvirt will have a failure, but that'd be true for any
> XML change I suppose.

IIRC ivshmem is non-migratable, so its impossible to have any existing
save files.


Regards,
Daniel
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