Commit bfc56535 authored by Gerd Hoffmann's avatar Gerd Hoffmann
Browse files

vga: fix display update region calculation 



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: fec5e8c9
Reported-by: default avatarKevin Wolf <kwolf@redhat.com>
Reported-by: default avatar李强 <liqiang6-s@360.cn>
Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
Message-id: 20170509104839.19415-1-kraxel@redhat.com
parent ca7f5441

hw/display/vga.c

+1 −1
Original line number Diff line number Diff line
@@ -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);

    }