RE: RE: RE: [virtio-comment] Re: [PATCH v2 05/11] transport-fabrics: introduce Keyed Transmission

[Parav Pandit <parav@nvidia.com>]

> From: zhenwei pi <pizhenwei@bytedance.com>
> Sent: Tuesday, June 6, 2023 3:14 AM
> > The idea is to not have multiple virtio_of_rdma_desc.
> > An initiator can represent 1B to 4GB of noncontiguous buffer using a single
> rdma mkey.
> > Hence, only one virtio_of_rdma_desc is enough from initiator to target.
> >
> 
> I have only a few knowledge about this:
> https://docs.nvidia.com/networking/pages/viewpage.action?pageId=25138119
> 
> And I notice that rdma-core and linux infiniband/core has no standard support
> for this, it seems mlx5 specific. Please correct me if I misunderstood...
> 
It is part of the IB specification and infiniband/core for a long time probably for a decade now.
And multiple hw vendors support it.
It is called as fast register memory regions WQE.
Donât have the link handy at the moment.