drm/i915/ringbuffer: Remove irq-seqno w/a for gen6 xcs

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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

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Chris Wilson 2018-12-28 17:16:38 +00:00

parent 2f0c733b35

commit d9cad2206a

1 changed files with 4 additions and 2 deletions

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drivers/gpu/drm/i915/intel_ringbuffer.c

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