From 770722585639bc2da683e72f610d5f614298e415 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Wed, 10 Sep 2014 12:18:27 +0100 Subject: [PATCH] drm/i915: HSW always use GGTT selector for secure batches MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit gen6 and earlier conflate address space selection (ppgtt vs ggtt) with the security bit (i.e. only privileged batches were allowed to run from ggtt). From Haswell only, you are able to select the security bit separate from the address space - and we always requested to use ppgtt. This breaks the golden render state batch execution with full-ppgtt as that is only present in the global GTT and more generally any secure batch that is not colocated in the ppgtt and ggtt. So we need to disable the use of the ppgtt selector bit for secure batches, or else we hang immediately upon boot and thence after every GPU reset... v2: Only HSW differentiates between secure dispatch and ggtt, so simply ignore the differentiation and always use secure==ggtt. Signed-off-by: Chris Wilson Cc: Ville Syrjälä Reviewed-by: Ville Syrjälä [danvet: Rectify commit message as noted by Chris.] Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_ringbuffer.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 109de2eeb9a8..25795f2efdcb 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -2203,8 +2203,9 @@ hsw_ring_dispatch_execbuffer(struct intel_engine_cs *ring, return ret; intel_ring_emit(ring, - MI_BATCH_BUFFER_START | MI_BATCH_PPGTT_HSW | - (flags & I915_DISPATCH_SECURE ? 0 : MI_BATCH_NON_SECURE_HSW)); + MI_BATCH_BUFFER_START | + (flags & I915_DISPATCH_SECURE ? + 0 : MI_BATCH_PPGTT_HSW | MI_BATCH_NON_SECURE_HSW)); /* bit0-7 is the length on GEN6+ */ intel_ring_emit(ring, offset); intel_ring_advance(ring); -- 2.11.4.GIT