From c553649c20737f0fd37d56c8ab8e64e2ccce5933 Mon Sep 17 00:00:00 2001
From: reinoud <reinoud@NetBSD.org>
Date: Sat, 24 Mar 2007 00:23:05 +0000
Subject: [PATCH] Disable hardware scrolling for now :( It *can* trap on rare
 occations. Most likely interrupt related; It might need to be protected by
 spl().

Disabled as a precaution until the problem is solved.
---
 sys/arch/i386/bios/vesafb.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/sys/arch/i386/bios/vesafb.c b/sys/arch/i386/bios/vesafb.c
index 25e75deddc1d..2477a316197c 100644
--- a/sys/arch/i386/bios/vesafb.c
+++ b/sys/arch/i386/bios/vesafb.c
@@ -1,4 +1,4 @@
-/* $NetBSD: vesafb.c,v 1.21 2007/03/24 00:07:17 reinoud Exp $ */
+/* $NetBSD: vesafb.c,v 1.22 2007/03/24 00:23:05 reinoud Exp $ */
 
 /*-
  * Copyright (c) 2006 Jared D. McNeill <jmcneill@invisible.ca>
@@ -37,7 +37,7 @@
 
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vesafb.c,v 1.21 2007/03/24 00:07:17 reinoud Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vesafb.c,v 1.22 2007/03/24 00:23:05 reinoud Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -234,6 +234,9 @@ vesafb_attach(struct device *parent, struct device *dev, void *aux)
 	if (sc->sc_scrollscreens == 0)
 		sc->sc_scrollscreens = 1;
 
+	/* XXX disable hardware scrolling for now; kvm86_call() can trap */
+	sc->sc_scrollscreens = 1;
+
 	sc->sc_screensize = mi->YResolution * mi->BytesPerScanLine;
 	sc->sc_fbsize = sc->sc_scrollscreens * sc->sc_screensize;