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drm/i915/gvt: add gtt_invalidate API to flush the GTT TLB
add gtt_invalidate API to handle the GTT TLB flush instead of hiding in write_pte64 function. This can avoid overkill when using write_pte64 Suggested-by: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Cc: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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Chuanxiao Dong
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Zhenyu Wang
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Jun 8, 2017
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