"Dr. David Alan Gilbert (git)" <dgilb...@redhat.com> wrote: > From: "Dr. David Alan Gilbert" <dgilb...@redhat.com> > > Signed-off-by: Dr. David Alan Gilbert <dgilb...@redhat.com> > --- > docs/migration.txt | 167 > +++++++++++++++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 167 insertions(+) > > diff --git a/docs/migration.txt b/docs/migration.txt > index f6df4be..b4b93d1 100644 > --- a/docs/migration.txt > +++ b/docs/migration.txt > @@ -291,3 +291,170 @@ save/send this state when we are in the middle > of a pio operation > (that is what ide_drive_pio_state_needed() checks). If DRQ_STAT is > not enabled, the values on that fields are garbage and don't need to > be sent. > + > += Return path = > + > +In most migration scenarios there is only a single data path that runs > +from the source VM to the destination, typically along a single fd (although > +possibly with another fd or similar for some fast way of throwing pages > across). > + > +However, some uses need two way communication; in particular the > Postcopy destination
This line is a bit long O:-) In general, we are too near to the 80 columns limit.
