drm/i915: Move whole object to CPU domain for coherent shmem access

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If the object is coherent, we can simply update the cache domain on the
whole object rather than calculate the before/after clflushes. The
advantage is that we then get correct tracking of ellided flushes when
changing coherency later.

Testcase: igt/gem_pwrite_snooped
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170310000942.11661-1-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

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Chris Wilson 2017-03-10 00:09:42 +00:00

parent 655d49ef77

commit 7f5f95d8ac

2 changed files with 26 additions and 25 deletions

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6

drivers/gpu/drm/i915/i915_drv.h

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45

drivers/gpu/drm/i915/i915_gem.c

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