Hi Chris,
On Wednesday, February 19, 2020 1:17:12 PM CET Chris Wilson wrote:
> Quoting Janusz Krzysztofik (2020-02-19 12:09:44)
> > The purpose of userptr MMU notifier is to invalidate object pages as
> > soon as someone unpins them from memory. While doing that,
> > obj->mm.lock is acquired. If
Quoting Janusz Krzysztofik (2020-02-19 12:09:44)
> The purpose of userptr MMU notifier is to invalidate object pages as
> soon as someone unpins them from memory. While doing that,
> obj->mm.lock is acquired. If the notifier was called with obj->mm.lock
> already held, a lockdep loop would be tri
The purpose of userptr MMU notifier is to invalidate object pages as
soon as someone unpins them from memory. While doing that,
obj->mm.lock is acquired. If the notifier was called with obj->mm.lock
already held, a lockdep loop would be triggered. That scenario is
believed to be possible in seve
