Why is nouveau using a separate swap storage?

[Ben Skeggs]

On Thu, 17 Sep 2020 at 20:06, Christian König
<ckoenig.leichtzumerken at gmail.com> wrote:
>
> Hi guys,
>
> just another TTM feature which is only used by nouveau.
>
> We have this bo->bo.persistent_swap_storage pointer which is only set by
> nouveau to the GEM filp and used when a BO is swapped to a shmem file.
>
> As far as I can see this doesn't make any sense at all? What is the
> background here.
No specific reason I can remember, likely cargo-cult from very very
early versions of TTM/GEM stuff.

Ben.

>
> Thanks,
> Christian.
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