drm/i915/gt: Tweak flushes around ivb ppgtt
authorChris Wilson <chris@chris-wilson.co.uk>
Tue, 31 Dec 2019 12:08:57 +0000 (12:08 +0000)
committerChris Wilson <chris@chris-wilson.co.uk>
Tue, 31 Dec 2019 17:13:27 +0000 (17:13 +0000)
commit24c66274e764de7d5851a35175e6e7ffbce24420
tree387964d3675bf4b42d70adfb878302f7a8a54e66
parent2b64e616d5527063f528321c391a9bc825715b93
drm/i915/gt: Tweak flushes around ivb ppgtt

A small tweak to flush then invalidate appears to improve the
reliability of ppGTT switches on Ivybridge -- but does not improve
hsw/vlv bcs reliability.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191231120857.4014900-1-chris@chris-wilson.co.uk
drivers/gpu/drm/i915/gt/intel_ring_submission.c