Re: [PATCH 4/4] drm/i915: Flush stale cachelines on set-cache-level

Quoting Chris Wilson (2019-07-18 17:54:07)

Ensure that we flush any cache dirt out to main memory before the user changes the cache-level as they may elect to bypass the cache (even after declaring their access cache-coherent) via use of unprivileged MOCS.

Signed-off-by: Chris Wilson chris@chris-wilson.co.uk Cc: Joonas Lahtinen joonas.lahtinen@linux.intel.com Cc: stable@vger.kernel.org

Reviewed-by: Joonas Lahtinen joonas.lahtinen@linux.intel.com

Regards, Joonas