commit 74637e6f08fceda988065f02c25d2cdb2ccd1762
author Lidong Chen <jemmy858585@gmail.com> Mon Aug 06 21:29:29 2018 +0800
committer Juan Quintela <quintela@redhat.com> Wed Aug 22 12:12:26 2018 +0200
tree 20b64090c48e3c1c6a660f7d4aaae8ffbad84002
parent 55cc1b5937a8e709e4c102e74b206281073aab82

migration: implement bi-directional RDMA QIOChannel

This patch implements bi-directional RDMA QIOChannel. Because different
threads may access RDMAQIOChannel currently, this patch use RCU to protect it.

Signed-off-by: Lidong Chen <lidongchen@tencent.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

migration/migration.c

diff --git a/migration/migration.c b/migration/migration.c
index 570da6c..6f2b506 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -2121,6 +2121,7 @@
     int res;
 
     trace_source_return_path_thread_entry();
+    rcu_register_thread();
 
 retry:
     while (!ms->rp_state.error && !qemu_file_get_error(rp) &&
@@ -2260,6 +2261,7 @@
     trace_source_return_path_thread_end();
     ms->rp_state.from_dst_file = NULL;
     qemu_fclose(rp);
+    rcu_unregister_thread();
     return NULL;
 }