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From: Anthony Liguori <anthony@codemonkey.ws>
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Date: Tue, 07 Apr 2009 20:55:58 +0000
Subject: [Qemu-devel] [7026] Fix crash on resolution change -> screen dump
 -> vga redraw ( Avi Kivity)
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Revision: 7026
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=7026
Author:   aliguori
Date:     2009-04-07 20:55:58 +0000 (Tue, 07 Apr 2009)
Log Message:
-----------
Fix crash on resolution change -> screen dump -> vga redraw (Avi Kivity)

The vga screen dump function updates last_width and last_height,
but does not change the DisplaySurface that these variables describe.
A consequent vga_draw_graphic() will therefore fail to resize the
surface and crash.

Fix by invalidating the display state after a screen dump, forcing
vga_draw_graphic() to reallocate the DisplaySurface.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

Modified Paths:
--------------
    trunk/hw/vga.c

Modified: trunk/hw/vga.c
===================================================================
--- trunk/hw/vga.c	2009-04-07 20:55:29 UTC (rev 7025)
+++ trunk/hw/vga.c	2009-04-07 20:55:58 UTC (rev 7026)
@@ -2678,4 +2678,5 @@
         vga_screen_dump_graphic(s, filename);
     else
         vga_screen_dump_text(s, filename);
+    vga_invalidate_display(s);
 }