Merge remote-tracking branch 'remotes/juanquintela/tags/migration.next-pull-request...

Merge remote-tracking branch 'remotes/juanquintela/tags/migration.next-pull-request' into staging

Migration Pull request (3rd try)

Hi

This should fix all the freebsd problems.

Please apply,

# gpg: Signature made Tue 19 Oct 2021 02:28:51 AM PDT
# gpg:                using RSA key 1899FF8EDEBF58CCEE034B82F487EF185872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>" [full]
# gpg:                 aka "Juan Quintela <quintela@trasno.org>" [full]

* remotes/juanquintela/tags/migration.next-pull-request:
  migration/rdma: advise prefetch write for ODP region
  migration/rdma: Try to register On-Demand Paging memory region
  migration: allow enabling mutilfd for specific protocol only
  migration: allow multifd for socket protocol only
  migration/ram: Don't passs RAMState to migration_clear_memory_region_dirty_bitmap_*()
  multifd: Unconditionally unregister yank function
  multifd: Implement yank for multifd send side

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>