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migration: implement bi-directional RDMA QIOChannel

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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>
This commit is contained in:
Lidong Chen 2018-08-06 21:29:29 +08:00 • committed by Juan Quintela
parent 55cc1b5937
commit 74637e6f08
6 changed files with 183 additions and 26 deletions
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2
migration/migration.c
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@ -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;
}