[seL4] Cross-core thread migration

If I have a manycore machine, what is the best way to migrate a thread from one core to another? Similarly, how can I send a capability (such as to memory)? Cryptography is an option for the second one, but seems inelegant and inefficient. Alternatively, are future versions of seL4 expected to scale to manycore systems without needing a multikernel? That would presumably make the answer trivial.

Sincerely,

Demi