From 74637e6f08fceda988065f02c25d2cdb2ccd1762 Mon Sep 17 00:00:00 2001
From: Lidong Chen <jemmy858585@gmail.com>
Date: Mon, 6 Aug 2018 21:29:29 +0800
Subject: 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 | 2 ++
 1 file changed, 2 insertions(+)

(limited to '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 @@ static void *source_return_path_thread(void *opaque)
     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 @@ out:
     trace_source_return_path_thread_end();
     ms->rp_state.from_dst_file = NULL;
     qemu_fclose(rp);
+    rcu_unregister_thread();
     return NULL;
 }
 
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