diff options
| -rw-r--r-- | softmmu/memory.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/softmmu/memory.c b/softmmu/memory.c index e37a4b8ae3..678dc62f06 100644 --- a/softmmu/memory.c +++ b/softmmu/memory.c @@ -2794,6 +2794,8 @@ static VMChangeStateEntry *vmstate_change; void memory_global_dirty_log_start(unsigned int flags) { + unsigned int old_flags = global_dirty_tracking; + if (vmstate_change) { qemu_del_vm_change_state_handler(vmstate_change); vmstate_change = NULL; @@ -2802,15 +2804,14 @@ void memory_global_dirty_log_start(unsigned int flags) assert(flags && !(flags & (~GLOBAL_DIRTY_MASK))); assert(!(global_dirty_tracking & flags)); global_dirty_tracking |= flags; - trace_global_dirty_changed(global_dirty_tracking); - MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward); - - /* Refresh DIRTY_MEMORY_MIGRATION bit. */ - memory_region_transaction_begin(); - memory_region_update_pending = true; - memory_region_transaction_commit(); + if (!old_flags) { + MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward); + memory_region_transaction_begin(); + memory_region_update_pending = true; + memory_region_transaction_commit(); + } } static void memory_global_dirty_log_do_stop(unsigned int flags) @@ -2821,12 +2822,12 @@ static void memory_global_dirty_log_do_stop(unsigned int flags) trace_global_dirty_changed(global_dirty_tracking); - /* Refresh DIRTY_MEMORY_MIGRATION bit. */ - memory_region_transaction_begin(); - memory_region_update_pending = true; - memory_region_transaction_commit(); - - MEMORY_LISTENER_CALL_GLOBAL(log_global_stop, Reverse); + if (!global_dirty_tracking) { + memory_region_transaction_begin(); + memory_region_update_pending = true; + memory_region_transaction_commit(); + MEMORY_LISTENER_CALL_GLOBAL(log_global_stop, Reverse); + } } static void memory_vm_change_state_handler(void *opaque, bool running, |