From: Alex Williamson <alex.williamson@redhat.com>
To: Jason Wang <jasowang@redhat.com>
Cc: kvm@vger.kernel.org, linux-s390@vger.kernel.org,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
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maxime.coquelin@redhat.com, cunming.liang@intel.com,
zhihong.wang@intel.com, rob.miller@broadcom.com,
xiao.w.wang@intel.com, haotian.wang@sifive.com,
zhenyuw@linux.intel.com, zhi.a.wang@intel.com,
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lulu@redhat.com, parav@mellanox.com,
christophe.de.dinechin@gmail.com, kevin.tian@intel.com,
stefanha@redhat.com
Subject: Re: [PATCH V8 0/6] mdev based hardware virtio offloading support
Date: Tue, 5 Nov 2019 10:58:34 -0700 [thread overview]
Message-ID: <20191105105834.469675f0@x1.home> (raw)
In-Reply-To: <20191105093240.5135-1-jasowang@redhat.com>
On Tue, 5 Nov 2019 17:32:34 +0800
Jason Wang <jasowang@redhat.com> wrote:
> Hi all:
>
> There are hardwares that can do virtio datapath offloading while
> having its own control path. This path tries to implement a mdev based
> unified API to support using kernel virtio driver to drive those
> devices. This is done by introducing a new mdev transport for virtio
> (virtio_mdev) and register itself as a new kind of mdev driver. Then
> it provides a unified way for kernel virtio driver to talk with mdev
> device implementation.
>
> Though the series only contains kernel driver support, the goal is to
> make the transport generic enough to support userspace drivers. This
> means vhost-mdev[1] could be built on top as well by resuing the
> transport.
>
> A sample driver is also implemented which simulate a virito-net
> loopback ethernet device on top of vringh + workqueue. This could be
> used as a reference implementation for real hardware driver.
>
> Also a real ICF VF driver was also posted here[2] which is a good
> reference for vendors who is interested in their own virtio datapath
> offloading product.
>
> Consider mdev framework only support VFIO device and driver right now,
> this series also extend it to support other types. This is done
> through introducing class id to the device and pairing it with
> id_talbe claimed by the driver. On top, this seris also decouple
> device specific parents ops out of the common ones.
>
> Pktgen test was done with virito-net + mvnet loop back device.
>
> Please review.
>
> [1] https://lkml.org/lkml/2019/10/31/440
> [2] https://lkml.org/lkml/2019/10/15/1226
>
> Changes from V7:
> - drop {set|get}_mdev_features for virtio
> - typo and comment style fixes
Seems we're nearly there, all the remaining comments are relatively
superficial, though I would appreciate a v9 addressing them as well as
the checkpatch warnings:
https://patchwork.freedesktop.org/series/68977/
Consider this a last call for reviews or acks (or naks) from affected
mdev vendor drivers, mdev-core sub-maintainers (Hi Kirti), virtio
stakeholders, etc. Thanks,
Alex
next prev parent reply other threads:[~2019-11-05 17:58 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-05 9:32 [PATCH V8 0/6] mdev based hardware virtio offloading support Jason Wang
2019-11-05 9:32 ` [PATCH V8 1/6] mdev: class id support Jason Wang
2019-11-05 16:03 ` Cornelia Huck
2019-11-05 9:32 ` [PATCH V8 2/6] modpost: add support for mdev class id Jason Wang
2019-11-05 16:06 ` Cornelia Huck
2019-11-05 9:32 ` [PATCH V8 3/6] mdev: introduce device specific ops Jason Wang
2019-11-05 16:50 ` Cornelia Huck
2019-11-05 17:44 ` Alex Williamson
2019-11-05 18:28 ` Cornelia Huck
2019-11-06 3:48 ` Jason Wang
2019-11-05 9:32 ` [PATCH V8 4/6] mdev: introduce virtio device and its device ops Jason Wang
2019-11-05 16:57 ` Cornelia Huck
2019-11-05 17:47 ` Alex Williamson
2019-11-06 3:51 ` Jason Wang
2019-11-05 9:32 ` [PATCH V8 5/6] virtio: introduce a mdev based transport Jason Wang
2019-11-05 18:33 ` Cornelia Huck
2019-11-05 9:32 ` [PATCH V8 6/6] docs: sample driver to demonstrate how to implement virtio-mdev framework Jason Wang
2019-11-05 18:35 ` Cornelia Huck
2019-11-05 17:58 ` Alex Williamson [this message]
2019-11-06 3:56 ` [PATCH V8 0/6] mdev based hardware virtio offloading support Jason Wang
2019-11-06 19:03 ` Alex Williamson
2019-11-06 19:25 ` Michael S. Tsirkin
2019-11-06 21:13 ` Alex Williamson
2019-11-07 4:11 ` Jason Wang
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