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-rw-r--r--arch_init.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch_init.c b/arch_init.c
index 8daeafaf5c..32b437897c 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -379,6 +379,8 @@ static inline bool migration_bitmap_set_dirty(MemoryRegion *mr,
return ret;
}
+/* Needs iothread lock! */
+
static void migration_bitmap_sync(void)
{
RAMBlock *block;
@@ -690,7 +692,9 @@ static uint64_t ram_save_pending(QEMUFile *f, void *opaque, uint64_t max_size)
remaining_size = ram_save_remaining() * TARGET_PAGE_SIZE;
if (remaining_size < max_size) {
+ qemu_mutex_lock_iothread();
migration_bitmap_sync();
+ qemu_mutex_unlock_iothread();
remaining_size = ram_save_remaining() * TARGET_PAGE_SIZE;
}
return remaining_size;