Re: [RFC PATCH 0/12] drm/fabric: vendor-neutral topology infrastructure for scale-up accelerator interconnects

[Leon Romanovsky]

On Mon, Aug 24, 2026 at 11:09:28AM +0300, Konstantin Sinyuk wrote:
> Modern GPUs and AI accelerators are increasingly connected through scale-up
> fabrics such as AMD xGMI today and emerging UALink systems [4]. Linux lacks
> common, vendor-neutral infrastructure for reporting which accelerators are
> directly connected, through which ports, and in what state.

<...>

> No production provider is included. Shipping only the synthetic provider is
> deliberate, allowing the object model and uAPI to be reviewed before being
> tied to hardware.

Tell your AI that this is not how things work in the real world. The chances
of multiple hardware implementations fitting a software model designed
without considering the actual hardware are effectively zero. This is why
successful subsystems have emerged from consolidating support for multiple
existing hardware implementations.

Thanks