[Qemu-devel] [PATCH 3/3] correct VNC_DIRTY_WORDS on 64 bit machine

[Wen Congyang]

VNC_DIRTY_WORDS is wrong on 64 bit long machine.

Signed-off-by: Wen Congyang <address@hidden>

---
 ui/vnc.h |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/ui/vnc.h b/ui/vnc.h
index 8a1e7b9..239a7a7 100644
--- a/ui/vnc.h
+++ b/ui/vnc.h
@@ -81,7 +81,8 @@ typedef void VncSendHextileTile(VncState *vs,
 
 #define VNC_MAX_WIDTH 2560
 #define VNC_MAX_HEIGHT 2048
-#define VNC_DIRTY_WORDS (VNC_MAX_WIDTH / (16 * BITS_PER_LONG))
+#define divideup(x, y)  (((x) + ((y) - 1)) / (y))
+#define VNC_DIRTY_WORDS (divideup(VNC_MAX_WIDTH, (16 * BITS_PER_LONG)))
 
 #define VNC_STAT_RECT  64
 #define VNC_STAT_COLS (VNC_MAX_WIDTH / VNC_STAT_RECT)
-- 
1.7.1