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Commit e02d9d76 authored by Chris Wilson's avatar Chris Wilson
Browse files

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



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: default avatarChris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170324151724.32640-1-chris@chris-wilson.co.uk


Reviewed-by: default avatarMichał Winiarski <michal.winiarski@intel.com>
parent 5d64c120

drivers/gpu/drm/i915/i915_gem_context.c

+2 −2
Original line number Diff line number Diff line
@@ -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;