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drm/i915: Disable MI_SET_CONTEXT psmi w/a for bdw

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The current w/a for the gen7 psmi related hangs doesn't apply to bdw, so
disable it if using bdw ringbuffer submission.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170324151724.32640-1-chris@chris-wilson.co.uk
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
This commit is contained in:
Chris Wilson
2017-03-24 15:17:23 +00:00
parent 5d64c120c0
commit e02d9d76bf
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/i915_gem_context.c
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@@ -582,8 +582,8 @@ mi_set_context(struct drm_i915_gem_request *req, u32 flags)
struct intel_engine_cs *engine = req->engine;
enum intel_engine_id id;
const int num_rings =
/* Use an extended w/a on ivb+ if signalling from other rings */
i915.semaphores ?
/* Use an extended w/a on gen7 if signalling from other rings */
(i915.semaphores && INTEL_GEN(dev_priv) == 7) ?
INTEL_INFO(dev_priv)->num_rings - 1 :
0;
int len;