From a6e5e5dd4bbc022acbd10ebcf415a6a57418d09e Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Tue, 26 Apr 2016 15:39:22 +0200
Subject: [PATCH 3/4] vga: update vga register setup on vbe changes

Call the new vbe_update_vgaregs() function on vbe configuration
changes, to make sure vga registers are up-to-date.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

Upstream-Status: Backport
CVE: CVE-2016-3712 patch3
Signed-off-by: Armin Kuster <akuster@mvista.com>

---
 hw/display/vga.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/display/vga.c b/hw/display/vga.c
index f1987e3..10ac7df 100644
--- a/hw/display/vga.c
+++ b/hw/display/vga.c
@@ -761,6 +761,7 @@ void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val)
         case VBE_DISPI_INDEX_Y_OFFSET:
             s->vbe_regs[s->vbe_index] = val;
             vbe_fixup_regs(s);
+            vbe_update_vgaregs(s);
             break;
         case VBE_DISPI_INDEX_BANK:
             val &= s->vbe_bank_mask;
-- 
2.7.4