diff -Naur i915.orig/i915_dma.c i915/i915_dma.c
--- linux-2.6.29.old/drivers/gpu/drm/i915/i915_dma.c	2009-03-24 01:12:14.000000000 +0200
+++ linux-2.6.29/drivers/gpu/drm/i915/i915_dma.c	2009-04-01 01:09:35.000000000 +0300
@@ -33,6 +33,9 @@
 #include "i915_drm.h"
 #include "i915_drv.h"
 
+static int gem_enable = 1;
+module_param(gem_enable, int, 0400);
+
 /* Really want an OS-independent resettable timer.  Would like to have
  * this loop run for (eg) 3 sec, but have the timer reset every time
  * the head pointer changes, so that EBUSY only happens if the ring
@@ -1114,7 +1117,7 @@
 	dev_priv->has_gem = 0;
 #else
 	/* enable GEM by default */
-	dev_priv->has_gem = 1;
+	dev_priv->has_gem = gem_enable;
 #endif
 
 	dev->driver->get_vblank_counter = i915_get_vblank_counter;