From 170f96bb1a4eca160e8b69cc802463bafac394b7 Mon Sep 17 00:00:00 2001
From: Kazutaka YOKOTA <yokota@FreeBSD.org>
Date: Mon, 15 Mar 1999 00:20:56 +0000
Subject: [PATCH] This is a temporary workaround for kernel panic occurring
 when switching video modes.  People typically see the panic when the screen
 saver has been running and is being stopped.

WARNING: this is not a real fix.  Something really funny must be
happening in the page table entries for the physical memory
0x0-0xa0000, which is mapped to the beginning of the kernel region.
---
 sys/i386/isa/vga_isa.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sys/i386/isa/vga_isa.c b/sys/i386/isa/vga_isa.c
index 4fca03f2231..38d46e5ed8c 100644
--- a/sys/i386/isa/vga_isa.c
+++ b/sys/i386/isa/vga_isa.c
@@ -26,7 +26,7 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- * $Id: vga_isa.c,v 1.2 1999/01/23 10:55:16 yokota Exp $
+ * $Id: vga_isa.c,v 1.4 1999/02/05 12:58:40 yokota Exp $
  */
 
 #include "vga.h"
@@ -1973,6 +1973,7 @@ vga_load_state(video_adapter_t *adp, void *p)
     inb(crtc_addr + 6);				/* reset flip-flop */
     outb(ATC, 0x20);				/* enable palette */
 
+#if notyet /* a temporary workaround for kernel panic, XXX */
 #ifndef VGA_NO_BIOS
     if (adp->va_unit == V_ADP_PRIMARY) {
 	writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]);	/* COLS */
@@ -1984,6 +1985,7 @@ vga_load_state(video_adapter_t *adp, void *p)
 #endif
     }
 #endif /* VGA_NO_BIOS */
+#endif /* notyet */
 
     splx(s);
     return 0;