Hi Yuval,
On 8/18/19 4:21 PM, Yuval Shaia wrote:
> The virtual address that is provided by the guest in post_send and
> post_recv operations is related to the guest address space. This
> address
> space is unknown to the HCA resides on host so extra step in these
> operations is needed to adjust the address to host virtual address.
>
> This step, which is done in data-path affects performances.
>
> An enhanced verion of MR registration introduced here
> https://patchwork.kernel.org/patch/11044467/ can be used so that the
> guest virtual address space for this MR is known to the HCA in host.
Nice work on kernel side !
Thanks,
Marcel
>
> This will save the data-path adjustment.
>
> patch #1 deals with what is needed to detect if the library installed in
> the host supports this function
> patch #2 enhance the data-path ops by utilizing the new function
>
> Yuval Shaia (2):
> configure: Check if we can use ibv_reg_mr_iova
> hw/rdma: Utilize ibv_reg_mr_iova for memory registration
>
> configure | 28 ++++++++++++++++++++++++++++
> hw/rdma/rdma_backend.c | 13 +++++++++++++
> hw/rdma/rdma_backend.h | 5 +++++
> hw/rdma/rdma_rm.c | 5 +++++
> hw/rdma/vmw/pvrdma_main.c | 6 ++++++
> 5 files changed, 57 insertions(+)
>