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[v2] drm/i915/bdw: Always issue a force restore

Message ID 1401318315-11676-1-git-send-email-benjamin.widawsky@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Ben Widawsky May 28, 2014, 11:05 p.m. UTC
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@bwidawsk.net>
---
 drivers/gpu/drm/i915/i915_gem_context.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox

Patch

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) |