Re: [PATCH v6 0/5] support inflight migration

[Peter Xu <peterx@redhat.com>]

On Wed, Jan 14, 2026 at 08:54:50PM +0300, Vladimir Sementsov-Ogievskiy wrote:
> On 14.01.26 18:17, Peter Xu wrote:
> > On Wed, Jan 14, 2026 at 05:35:53PM +0300, Vladimir Sementsov-Ogievskiy wrote:
> > > On 14.01.26 15:22, Peter Xu wrote:
> > > > On Wed, Jan 14, 2026 at 09:19:10AM +0300, Vladimir Sementsov-Ogievskiy wrote:
> > > > > On 13.01.26 21:56, Peter Xu wrote:
> > > > > > On Tue, Jan 13, 2026 at 01:12:42PM -0500, Stefan Hajnoczi wrote:
> > > > > > > On Tue, Jan 13, 2026 at 02:58:09PM +0500, Alexandr Moshkov wrote:
> > > > > > > 
> > > > > > > Peter: Please review the migration aspects (especially the vmstates).
> > > > > > > Thank you!
> > > > > > 
> > > > > > Looks good from my side as long as it's based on VMSD, I appreciate that
> > > > > > change from the old versions where it used to use qemufile APIs.
> > > > > > 
> > > > > > The major question here is if this series depends on Vladimir's other
> > > > > > series
> > > > > 
> > > > > No, it does not. And if we can proceed with merging these series first, I'll
> > > > > be happy to rebase on top of it.
> > > > 
> > > > I thought it requires migrate_local_vhost_user_blk() be present?  The
> > > > inflight feature should not be enabled only if there's a hint that it's a
> > > > local migration..
> > > 
> > > Oh right, I missed it.
> > > 
> > > We discussed that Alexandr will rebase the series on master without dependency
> > > on my RFC.
> > 
> > The problem is IIUC the new INFLIGHT feature bit will be declared as
> > supported to vhost-user-block after applying this series.  Then if we start
> > a remote migration (rather than local) it'll be automatically (and wrongly)
> > enabled?
> > 
> 
> No, not so.
> 
> We develop inflight-region migraiton (this series) exactly for remote migration,
> not for local.
> 
> My series about backend transfer (fd-migration) will migrate inflight-region the
> other way - by migrating its FD.

Ah, I see.. Yes I think you're right then there's no dependency needed.
Please go ahead with the repost.

Thanks,

-- 
Peter Xu