Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport

[Michael S. Tsirkin]

On Wed, Mar 20, 2013 at 04:39:00PM -0400, Michael R. Hines wrote:
> Unmapped virtual addresses cannot be pinned for RDMA (the hardware
> will break),
> but there's no way to know they are unmapped without checking
> another data structure.

So for RDMA, when you try to register them, this will fault them in.
For regular migration we really should try using vmsplice.  Anyone up to
it? If we do this TCP could outperform RDMA for some workloads ...

-- 
MST