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(parent: 6c664e8) | patch
drm/i915/ringbuffer: Remove irq-seqno w/a for gen6 xcs
authorChris Wilson <chris@chris-wilson.co.uk>
Fri, 28 Dec 2018 17:16:38 +0000 (17:16 +0000)
committerChris Wilson <chris@chris-wilson.co.uk>
Mon, 31 Dec 2018 15:35:45 +0000 (15:35 +0000)
commit62ddca46c5f73cf149f1027cdae7b984844e92ed
tree8f377a54e96c3befe57507c4ecf02cc0e7ed8f03tree | snapshot
parent6c664e8f37be42a49cf1fb0b4f9db59818e2b055commit | diff
drm/i915/ringbuffer: Remove irq-seqno w/a for gen6 xcs

The MI_FLUSH_DW does appear coherent with the following
MI_USER_INTERRUPT, but only on Sandybridge. Ivybridge requires a heavier
hammer, but on Sandybridge we can stop requiring the irq_seqno barrier.

Testcase: igt/gem_sync
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181228171641.16531-3-chris@chris-wilson.co.uk
drivers/gpu/drm/i915/intel_ringbuffer.c diff | blob | history
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