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
