vhost: use QEMU_ALIGN_DOWN

I used the clang-tidy qemu-round check to generate the fix: https://github.com/elmarco/clang-tools-extra Signed-off-by: Marc-André Lureau <[email protected]> Reviewed-by: Michael S. Tsirkin <[email protected]> Reviewed-by: Richard Henderson <[email protected]>
zhoulunhao · Aug 31, 2017 · 33c5793 · 33c5793
1 parent cf7a09c
commit 33c5793
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
@@ -70,7 +70,7 @@ static void vhost_dev_sync_region(struct vhost_dev *dev,
     uint64_t end = MIN(mlast, rlast);
     vhost_log_chunk_t *from = log + start / VHOST_LOG_CHUNK;
     vhost_log_chunk_t *to = log + end / VHOST_LOG_CHUNK + 1;
-    uint64_t addr = (start / VHOST_LOG_CHUNK) * VHOST_LOG_CHUNK;
+    uint64_t addr = QEMU_ALIGN_DOWN(start, VHOST_LOG_CHUNK);
 
     if (end < start) {
         return;