1 files changed, 2 insertions, 0 deletions
diff --git a/dma-helpers.c b/dma-helpers.c
index 97157cc2ec..2d7e02d35e 100644
--- a/dma-helpers.c
+++ b/dma-helpers.c
@@ -166,8 +166,10 @@ static void dma_blk_cb(void *opaque, int ret)
                                 QEMU_ALIGN_DOWN(dbs->iov.size, dbs->align));
     }
 
+    aio_context_acquire(dbs->ctx);
     dbs->acb = dbs->io_func(dbs->offset, &dbs->iov,
                             dma_blk_cb, dbs, dbs->io_func_opaque);
+    aio_context_release(dbs->ctx);
     assert(dbs->acb);
 }