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

[Paolo Bonzini]

Il 11/04/2013 17:18, Michael R. Hines ha scritto:
> First of all, this whole argument should not even exist for the 
> following reason:
> 
> Page registrations are supposed to be *rare* - once a page is 
> registered, it is registered for life.

Uh-oh.  That changes things a lot.  We do not even need to benchmark the
various chunk sizes.

> Third, this means that optimizing this protocol would not be helpful
> and that we should follow the "keep it simple" approach because
> during steady-state phase of the migration most of the pages should
> have already been registered.

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.

Paolo