Replace "iothread lock" with "BQL" in comments

The term "iothread lock" is obsolete. The APIs use Big QEMU Lock (BQL)
in their names. Update the code comments to use "BQL" instead of
"iothread lock".

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Message-id: 20240102153529.486531-5-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/include/migration/register.h b/include/migration/register.h
index fed1d04a3c..9ab1f79512 100644
--- a/include/migration/register.h
+++ b/include/migration/register.h
@@ -17,7 +17,7 @@
 #include "hw/vmstate-if.h"
 
 typedef struct SaveVMHandlers {
-    /* This runs inside the iothread lock.  */
+    /* This runs inside the BQL.  */
     SaveStateHandler *save_state;
 
     /*
@@ -30,7 +30,7 @@ typedef struct SaveVMHandlers {
     int (*save_live_complete_postcopy)(QEMUFile *f, void *opaque);
     int (*save_live_complete_precopy)(QEMUFile *f, void *opaque);
 
-    /* This runs both outside and inside the iothread lock.  */
+    /* This runs both outside and inside the BQL.  */
     bool (*is_active)(void *opaque);
     bool (*has_postcopy)(void *opaque);
 
@@ -43,14 +43,14 @@ typedef struct SaveVMHandlers {
      */
     bool (*is_active_iterate)(void *opaque);
 
-    /* This runs outside the iothread lock in the migration case, and
+    /* This runs outside the BQL in the migration case, and
      * within the lock in the savevm case.  The callback had better only
      * use data that is local to the migration thread or protected
      * by other locks.
      */
     int (*save_live_iterate)(QEMUFile *f, void *opaque);
 
-    /* This runs outside the iothread lock!  */
+    /* This runs outside the BQL!  */
     /* Note for save_live_pending:
      * must_precopy:
      * - must be migrated in precopy or in stopped state