Re: [Intel-gfx] [PATCH 03/25] dma-buf.rst: Document why idenfinite fences are a bad idea

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Hi,

On Tue, 7 Jul 2020 at 21:13, Daniel Vetter <daniel.vetter@xxxxxxxx> wrote:
> Comes up every few years, gets somewhat tedious to discuss, let's
> write this down once and for all.

Thanks for writing this up! I wonder if any of the notes from my reply
to the previous-version thread would be helpful to more explicitly
encode the carrot of dma-fence's positive guarantees, rather than just
the stick of 'don't do this'. ;) Either way, this is:
Acked-by: Daniel Stone <daniels@xxxxxxxxxxxxx>

> What I'm not sure about is whether the text should be more explicit in
> flat out mandating the amdkfd eviction fences for long running compute
> workloads or workloads where userspace fencing is allowed.

... or whether we just say that you can never use dma-fence in
conjunction with userptr.

Cheers,
Daniel
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