Re: Re: [RFC 0/5] VirtIO RDMA

[魏俊吉]

On Wed, Sep 22, 2021 at 9:06 PM Leon Romanovsky <leon@kernel.org> wrote:
>
> On Wed, Sep 22, 2021 at 08:08:44PM +0800, Junji Wei wrote:
> > > On Sep 15, 2021, at 9:43 PM, Jason Gunthorpe <jgg@nvidia.com> wrote:
>
> <...>
>
> > >> 4. The FRMR api need to set key of MR through IB_WR_REG_MR.
> > >>   But it is impossible to change a key of mr using uverbs.
> > >
> > > FRMR is more like memory windows in user space, you can't support it
> > > using just regular MRs.
> >
> > It is hard to support this using uverbs, but it is easy to support
> > with uRDMA that we can get full control of mrs.
>
> What is uRDMA?

uRDMA is a software implementation of the RoCEv2 protocol like rxe.
We will implement it in QEMU with VFIO or DPDK.

Thanks.
Junji