[Linaro-mm-sig] [PATCH 1/2] dma-buf.rst: Document why indefinite fences are a bad idea

[Thomas Hellström (Intel)]

Hi,

On 7/9/20 2:33 PM, Daniel Vetter wrote:
> Comes up every few years, gets somewhat tedious to discuss, let's
> write this down once and for all.
>
> 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.

Although (in my humble opinion) it might be possible to completely 
untangle kernel-introduced fences for resource management and dma-fences 
used for completion- and dependency tracking and lift a lot of 
restrictions for the dma-fences, including prohibiting infinite ones, I 
think this makes sense describing the current state.

Reviewed-by: Thomas Hellstrom <thomas.hellstrom at intel.com>