The code was incorrectly calculating the end address rather than the size of the required region.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayl...@ilande.co.uk> Reviewed-by: Gerd Hoffmann <kra...@redhat.com> --- hw/display/cg3.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/display/cg3.c b/hw/display/cg3.c index 7d43694..b42f60e 100644 --- a/hw/display/cg3.c +++ b/hw/display/cg3.c @@ -114,7 +114,7 @@ static void cg3_update_display(void *opaque) int update = s->full_update; page = y * width; - update |= memory_region_get_dirty(&s->vram_mem, page, page + width, + update |= memory_region_get_dirty(&s->vram_mem, page, width, DIRTY_MEMORY_VGA); if (update) { if (y_start < 0) { -- 1.7.10.4