Quoting Chris Wilson (2019-11-10 20:57:51)
> Having been forced to reduce Braswell back to using the aliasing ppgtt,
> the coherency issue we previously observed cannot impact us. Reduce the
> performance penalty imposed on all platforms from using the mfence to a
> mere sfence.
>
> References: cf66b8a0ba14 ("drm/i915/execlists: Apply a full mb before
> execution for Braswell")
> Signed-off-by: Chris Wilson <[email protected]>
> Cc: Mika Kuoppala <[email protected]>
> Cc: Joonas Lahtinen <[email protected]>
Reviewed-by: Joonas Lahtinen <[email protected]>
Regards, Joonas
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