[RFC PATCH 08/17] COLO: disable qdev hotplug

[Yang Hongyang <yanghy@xxxxxxxxxxxxxx>]

COLO do not support qdev hotplug migration, disable it.

Signed-off-by: Yang Hongyang <yanghy@xxxxxxxxxxxxxx>
---
 migration-colo.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/migration-colo.c b/migration-colo.c
index b90d9b6..f295e56 100644
--- a/migration-colo.c
+++ b/migration-colo.c
@@ -12,6 +12,7 @@
 #include "qemu/thread.h"
 #include "block/coroutine.h"
 #include "qemu/error-report.h"
+#include "hw/qdev-core.h"
 #include "migration/migration-colo.h"
 
 static QEMUBH *colo_bh;
@@ -130,6 +131,9 @@ static const QEMUFileOps colo_read_ops = {
 static void *colo_thread(void *opaque)
 {
     MigrationState *s = opaque;
+    int dev_hotplug = qdev_hotplug;
+
+    qdev_hotplug = 0;
 
     colo_buffer_init();
 
@@ -145,6 +149,8 @@ static void *colo_thread(void *opaque)
     qemu_bh_schedule(s->cleanup_bh);
     qemu_mutex_unlock_iothread();
 
+    qdev_hotplug = dev_hotplug;
+
     return NULL;
 }
 
@@ -179,10 +185,14 @@ static Coroutine *colo;
 
 void colo_process_incoming_checkpoints(QEMUFile *f)
 {
+    int dev_hotplug = qdev_hotplug;
+
     if (!restore_use_colo()) {
         return;
     }
 
+    qdev_hotplug = 0;
+
     colo = qemu_coroutine_self();
     assert(colo != NULL);
 
@@ -194,5 +204,7 @@ void colo_process_incoming_checkpoints(QEMUFile *f)
     colo = NULL;
     restore_exit_colo();
 
+    qdev_hotplug = dev_hotplug;
+
     return;
 }
-- 
1.9.1

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