Re: [PATCH for-9.0] docs/about: Mark the iaspc machine type as deprecated

[Peter Maydell]

On Wed, 27 Mar 2024 at 13:23, Daniel P. Berrangé <berrange@redhat.com> wrote:
>
> On Wed, Mar 27, 2024 at 02:09:17PM +0100, Igor Mammedov wrote:
> > On Wed, 27 Mar 2024 10:49:43 +0000
> > Daniel P. Berrangé <berrange@redhat.com> wrote:
> > It's question of whether we are willing to do unthinkable,
> > i.e. to break QEMU <-> guest ABI for isapc case by removing
> > corresponding fwcfg entries.
>
> There has never been any ABI stability requirement for 'isapc'
> as it is not a versioned machine type.
>
> > With migration ignored it shouldn't be a problem.
> > Question is: does anyone care about migration with isapc?
> > If not, I'd gladly axe smbios legacy parts in 9.1
>
> Migration is irrelevant unless someone steps forward to
> commit to long term versioning of the machine type.

But migration is also how we implement savevm/loadvm,
which are useful even when the machine type is not versioned.
So please don't put in migration blockers or similar that would
break that.

thanks
-- PMM