From bfc56535f793c557aa754c50213fc5f882e6482d Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Tue, 9 May 2017 12:48:39 +0200
Subject: [PATCH] vga: fix display update region calculation
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vga display update mis-calculated the region for the dirty bitmap
snapshot in case the scanlines are padded. This can triggere an
assert in cpu_physical_memory_snapshot_get_dirty().
Fixes: fec5e8c92becad223df9d972770522f64aafdb72
Reported-by: Kevin Wolf <kwolf@redhat.com>
Reported-by: æ强 <liqiang6-s@360.cn>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20170509104839.19415-1-kraxel@redhat.com
---
hw/display/vga.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/display/vga.c b/hw/display/vga.c
index b2516c8d21..dcc95f88e2 100644
--- a/hw/display/vga.c
+++ b/hw/display/vga.c
@@ -1630,7 +1630,7 @@ static void vga_draw_graphic(VGACommonState *s, int full_update)
if (!full_update) {
vga_sync_dirty_bitmap(s);
snap = memory_region_snapshot_and_clear_dirty(&s->vram, addr1,
- bwidth * height,
+ line_offset * height,
DIRTY_MEMORY_VGA);
}
--
2.30.2