drm/i915/gt: Skip global serialisation of clear_range for bxt vtd

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VT'd on Broxton and on Braswell require serialisation of GGTT updates.
However, it seems to only be required for insertion, so drop the
complication and heavyweight stop_machine() for clears. The range will
be serialised again before use.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200130092239.1743672-1-chris@chris-wilson.co.uk

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Chris Wilson 2020-01-30 09:22:38 +00:00

parent 0cef62d8e0

commit bf72c8c6ee

1 changed files with 0 additions and 27 deletions

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drivers/gpu/drm/i915/gt/intel_ggtt.c

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