[Intel-gfx] [PATCH 06/24] drm/i915: Remove locking from i915_gem_object_prepare_read/write

[Thomas Hellström (Intel)]

On 8/10/20 12:30 PM, Maarten Lankhorst wrote:
> Execbuffer submission will perform its own WW locking, and we
> cannot rely on the implicit lock there.
>
> This also makes it clear that the GVT code will get a lockdep splat when
> multiple batchbuffer shadows need to be performed in the same instance,
> fix that up.
>
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

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