[Intel-gfx] [PATCH] [v2] drm/i915/bdw: Always issue a force restore
Ben Widawsky
benjamin.widawsky at intel.com
Thu May 29 01:05:15 CEST 2014
The PDPs seem to get screwed up otherwise, specifically PDP0. I am not
really clear why this is required, it just works with full PPGTT.
v2: Only do it for gen8, to limit regression potential
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78891
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78934
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78935
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78936
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78937
Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
---
drivers/gpu/drm/i915/i915_gem_context.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index 3ffe308..c5330ab 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -568,6 +568,9 @@ mi_set_context(struct intel_engine_cs *ring,
else
intel_ring_emit(ring, MI_NOOP);
+ if (INTEL_INFO(ring->dev)->gen == 8)
+ hw_flags |= MI_FORCE_RESTORE;
+
intel_ring_emit(ring, MI_NOOP);
intel_ring_emit(ring, MI_SET_CONTEXT);
intel_ring_emit(ring, i915_gem_obj_ggtt_offset(new_context->obj) |
--
1.9.3
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