From: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
To: Yuval Shaia <yuval.shaia@oracle.com>, qemu-devel@nongnu.org
Subject: Re: [PATCH 0/2] rdma: Utilize ibv_reg_mr_iova for memory registration
Date: Tue, 5 Nov 2019 13:23:03 +0200 [thread overview]
Message-ID: <29dd5f61-e11d-6563-cacc-899040bb4021@gmail.com> (raw)
In-Reply-To: <20190818132107.18181-1-yuval.shaia@oracle.com>
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.
>
> 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(+)
>
Can you please rebase on master and add to the patchset your other patches?
Thanks,
Marcel
prev parent reply other threads:[~2019-11-05 11:23 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-18 13:21 [Qemu-devel] [PATCH 0/2] rdma: Utilize ibv_reg_mr_iova for memory registration Yuval Shaia
2019-08-18 13:21 ` [Qemu-devel] [PATCH 1/2] configure: Check if we can use ibv_reg_mr_iova Yuval Shaia
2019-08-31 19:28 ` Marcel Apfelbaum
2019-09-01 9:25 ` Yuval Shaia
2019-08-18 13:21 ` [Qemu-devel] [PATCH 2/2] hw/rdma: Utilize ibv_reg_mr_iova for memory registration Yuval Shaia
2019-08-31 19:31 ` Marcel Apfelbaum
2019-09-01 9:30 ` Yuval Shaia
2019-08-31 19:26 ` [Qemu-devel] [PATCH 0/2] rdma: " Marcel Apfelbaum
2019-11-05 11:23 ` Marcel Apfelbaum [this message]
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