Re: [Intel-gfx] [PATCH 03/10] drm/i915: Assume exclusive access to objects inside resume

Mon, 19 Aug 2019 12:58:25 -0700 

On Mon, 19 Aug 2019 at 17:45, Chris Wilson <[email protected]> wrote:
>
> Inside gtt_restore_mappings() we currently take the obj->resv->lock, but
> in the future we need to avoid taking this fs-reclaim tainted lock as we
> need to extend the coverage of the vm->mutex. Take advantage of the
> single-threaded nature of the early resume phase, and do a single
> wbinvd() to flush all the GTT objects en masse.
>
> Signed-off-by: Chris Wilson <[email protected]>
Reviewed-by: Matthew Auld <[email protected]>
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