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

[Leon Romanovsky]

On Wed, Sep 22, 2021 at 09:37:37PM +0800, 魏俊吉 wrote:
> 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.

ok, thanks

> 
> Thanks.
> Junji