Merge remote-tracking branch 'remotes/juanquintela/tags/migration/20180822-1' into staging

migration/next for 20180822

# gpg: Signature made Wed 22 Aug 2018 12:07:59 BST
# gpg:                using RSA key F487EF185872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>"
# gpg:                 aka "Juan Quintela <quintela@trasno.org>"
# Primary key fingerprint: 1899 FF8E DEBF 58CC EE03  4B82 F487 EF18 5872 D723

* remotes/juanquintela/tags/migration/20180822-1:
  migration: hold the lock only if it is really needed
  migration: move handle of zero page to the thread
  migration: drop the return value of do_compress_ram_page
  migration: introduce save_zero_page_to_file
  migration: fix counting normal page for compression
  migration: do not wait for free thread
  migration: poll the cm event for destination qemu
  tests/migration-test: Silence the kvm_hv message by default
  migration: implement the shutdown for RDMA QIOChannel
  migration: poll the cm event while wait RDMA work request completion
  migration: invoke qio_channel_yield only when qemu_in_coroutine()
  migration: implement io_set_aio_fd_handler function for RDMA QIOChannel
  migration: Stop rdma yielding during incoming postcopy
  migration: implement bi-directional RDMA QIOChannel
  migration: create a dedicated connection for rdma return path
  migration: disable RDMA WRITE after postcopy started
  migrate/cpu-throttle: Add max-cpu-throttle migration parameter
  docs/migration: Clarify pre_load in subsections
  migration: Correctly handle subsections with no 'needed' function
  qapi/migration.json: fix the description for "query-migrate" output

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/qemu/queue.h b/include/qemu/queue.h
index 59fd1203a1..ac418efc43 100644
--- a/include/qemu/queue.h
+++ b/include/qemu/queue.h
@@ -341,6 +341,7 @@ struct {                                                                \
 /*
  * Simple queue access methods.
  */
+#define QSIMPLEQ_EMPTY_ATOMIC(head) (atomic_read(&((head)->sqh_first)) == NULL)
 #define QSIMPLEQ_EMPTY(head)        ((head)->sqh_first == NULL)
 #define QSIMPLEQ_FIRST(head)        ((head)->sqh_first)
 #define QSIMPLEQ_NEXT(elm, field)   ((elm)->field.sqe_next)