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Re: [PATCH V3 00/10] vhost-vDPA multiqueue
From: |
Jason Wang |
Subject: |
Re: [PATCH V3 00/10] vhost-vDPA multiqueue |
Date: |
Wed, 29 Sep 2021 13:18:20 +0800 |
On Tue, Sep 7, 2021 at 5:03 PM Jason Wang <jasowang@redhat.com> wrote:
>
> Hi All:
>
> This patch implements the multiqueue support for vhost-vDPA. The most
> important requirement si the control virtqueue support. The virtio-net
> and vhost-net core are tweak to support control virtqueue as if what
> data queue pairs are done: a dedicated vhost_net device which is
> coupled with the NetClientState is intrdouced so most of the existing
> vhost codes could be reused with minor changes. This means the control
> virtqueue will bypass the Qemu. With the control virtqueue, vhost-vDPA
> are extend to support creating and destroying multiqueue queue pairs
> plus the control virtqueue.
>
> For the future, if we want to support live migration, we can either do
> shadow cvq on top or introduce new interfaces for reporting device
> states.
>
> Tests are done via the vp_vdpa driver in L1 guest.
Michael, does this look good to you? If yes, do you plan to merge this
or I can do that?
Thanks
>
> Changes since V2:
>
> - rebase to qemu master
> - use "queue_pairs" instead of "qps"
> - typo fixes
>
> Changes since V1:
>
> - start and stop vhost devices when all queues were setup
> - fix the case when driver doesn't support MQ but device support
> - correctly set the batching capability to avoid a map/unmap storm
> - various other tweaks
>
> Jason Wang (10):
> vhost-vdpa: open device fd in net_init_vhost_vdpa()
> vhost-vdpa: classify one time request
> vhost-vdpa: prepare for the multiqueue support
> vhost-vdpa: let net_vhost_vdpa_init() returns NetClientState *
> net: introduce control client
> vhost-net: control virtqueue support
> virtio-net: use "queue_pairs" instead of "queues" when possible
> vhost: record the last virtqueue index for the virtio device
> virtio-net: vhost control virtqueue support
> vhost-vdpa: multiqueue support
>
> hw/net/vhost_net.c | 55 ++++++++---
> hw/net/virtio-net.c | 165 ++++++++++++++++++---------------
> hw/virtio/vhost-vdpa.c | 56 +++++++++--
> include/hw/virtio/vhost-vdpa.h | 1 +
> include/hw/virtio/vhost.h | 2 +
> include/hw/virtio/virtio-net.h | 5 +-
> include/net/net.h | 5 +
> include/net/vhost_net.h | 6 +-
> net/net.c | 24 ++++-
> net/vhost-vdpa.c | 127 ++++++++++++++++++++++---
> 10 files changed, 328 insertions(+), 118 deletions(-)
>
> --
> 2.25.1
>
- [PATCH V3 05/10] net: introduce control client, (continued)
- [PATCH V3 05/10] net: introduce control client, Jason Wang, 2021/09/07
- [PATCH V3 06/10] vhost-net: control virtqueue support, Jason Wang, 2021/09/07
- [PATCH V3 07/10] virtio-net: use "queue_pairs" instead of "queues" when possible, Jason Wang, 2021/09/07
- [PATCH V3 08/10] vhost: record the last virtqueue index for the virtio device, Jason Wang, 2021/09/07
- [PATCH V3 09/10] virtio-net: vhost control virtqueue support, Jason Wang, 2021/09/07
- [PATCH V3 10/10] vhost-vdpa: multiqueue support, Jason Wang, 2021/09/07
- RE: [PATCH V3 00/10] vhost-vDPA multiqueue, Zhang, Chen, 2021/09/09
- Re: [PATCH V3 00/10] vhost-vDPA multiqueue,
Jason Wang <=