[PATCH 6/9] drm/i915/shmem: ensure flush during swap-in on non-LLC

[Thomas Hellström]

On 10/18/21 19:45, Matthew Auld wrote:
> On non-LLC platforms, force the flush-on-acquire if this is ever
> swapped-in. Our async flush path is not trust worthy enough yet(and
> happens in the wrong order), and with some tricks it's conceivable for
> userspace to change the cache-level to I915_CACHE_NONE after the pages
> are swapped-in, and since execbuf binds the object before doing the
> async flush, there is a potential race window.

Reviewed-by: Thomas Hellström <thomas.hellstrom at linux.intel.com>