drm/i915 disallow physical batchbuffers for KMS
Even the horrible gen3 XvMC code has learned to do this
right by the time xf86-video-intel releases learned to do
kernel modesetting. So we can just disallow this.
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 5e34775..131eadb 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3567,8 +3567,9 @@
return ret;
}
- /* Allow hardware batchbuffers unless told otherwise. */
- dev_priv->dri1.allow_batchbuffer = 1;
+ /* Allow hardware batchbuffers unless told otherwise, but not for KMS. */
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ dev_priv->dri1.allow_batchbuffer = 1;
return 0;
}