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Normal users shouldn't be hitting this, likely this would indicate a userspace bug. So don't bother caching, which should be safe now that we manually flush the page. Suggested-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Matthew Auld <matthew.auld@intel.com> Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Ramalingam C <ramalingam.c@intel.com> Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211028092638.3142258-2-matthew.auld@intel.com