drm/i915/gvt: Reduce rcs mocs switch latency

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Use I915_WRITE_FW instead of I915_WRITE to reduce overhead.
The overall mmio switch latency lowers from ~600us to ~180us.

Signed-off-by: Changbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>

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Changbin Du 2017-10-30 14:19:15 +08:00 • committed by Zhenyu Wang

parent 0bde438b7e

commit ffe2a503b0

1 changed files with 1 additions and 1 deletions

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drivers/gpu/drm/i915/gvt/render.c

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