[Qemu-trivial] [PATCH v2 04/29] vhost: use QEMU_ALIGN_DOWN

[Marc-André Lureau]

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 <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
---
 hw/virtio/vhost.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index 6eddb099b0..0049a2c0b3 100644
--- 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;
-- 
2.13.1.395.gf7b71de06