On Wed, Sep 22, 2021 at 9:06 PM Leon Romanovsky <leon@xxxxxxxxxx> 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@xxxxxxxxxx> 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
