Re: [Qemu-devel] [RFC PATCH RDMA support v5: 03/12] comprehensive protocol documentation

[Paolo Bonzini]

Il 11/04/2013 17:46, Michael S. Tsirkin ha scritto:
> > Ok, let's keep it simple.  The only two things we need are:
> > 
> > 1) remove the patch to disable is_dup_page
> > 
> > 2) rename the transport to "x-rdma" (just in migration.c)
> > 
> > Both things together let us keep it safe for a release or two.  Let's
> > merge this thing.
> 
> I would drop the chunk based thing too.  Besides being slow, it turns
> out that it pins all memory anyway. So no memory overcommit.

It doesn't pin zero pages.  Those are never transmitted (it's a recent
change).  So pages that are ballooned at the beginning of migration, and
remain ballooned throughout, will never be pinned.

Paolo