[Mesa-dev] Linux Graphics Next: Userspace submission update

Marek Olšák maraeo at gmail.com
Wed Jun 2 09:38:51 UTC 2021

On Wed, Jun 2, 2021 at 5:34 AM Marek Olšák <maraeo at gmail.com> wrote:

> Yes, we can't break anything because we don't want to complicate things
> for us. It's pretty much all NAK'd already. We are trying to gather more
> knowledge and then make better decisions.
> The idea we are considering is that we'll expose memory-based sync objects
> to userspace for read only, and the kernel or hw will strictly control the
> memory writes to those sync objects. The hole in that idea is that
> userspace can decide not to signal a job, so even if userspace can't
> overwrite memory-based sync object states arbitrarily, it can still decide
> not to signal them, and then a future fence is born.

This would actually be treated as a GPU hang caused by that context, so it
should be fine.

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