From e048dac616748273c2153490e9fdf1da242f0cad Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Wed, 15 Mar 2017 13:06:46 +0100 Subject: [PATCH] cirrus: fix cirrus_invalidate_region off_cur_end is exclusive, so off_cur_end == cirrus_addr_mask is valid. Fix calculation to make sure to allow that, otherwise the assert added by commit f153b563f8cf121aebf5a2fff5f0110faf58ccb3 can trigger for valid blits. Test case: boot windows nt 4.0 Signed-off-by: Gerd Hoffmann Message-id: 1489579606-26020-1-git-send-email-kraxel@redhat.com --- hw/display/cirrus_vga.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/hw/display/cirrus_vga.c b/hw/display/cirrus_vga.c index 326d511e60..a9f6d5bb4c 100644 --- a/hw/display/cirrus_vga.c +++ b/hw/display/cirrus_vga.c @@ -667,11 +667,11 @@ static void cirrus_invalidate_region(CirrusVGAState * s, int off_begin, } for (y = 0; y < lines; y++) { - off_cur = off_begin; - off_cur_end = (off_cur + bytesperline) & s->cirrus_addr_mask; + off_cur = off_begin; + off_cur_end = ((off_cur + bytesperline - 1) & s->cirrus_addr_mask) + 1; assert(off_cur_end >= off_cur); memory_region_set_dirty(&s->vga.vram, off_cur, off_cur_end - off_cur); - off_begin += off_pitch; + off_begin += off_pitch; } } -- 2.39.5