linux-kernel - Re: [PATCH V4 0/3] virtio-pci: introduce modern device module

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Date:   Tue, 23 Feb 2021 07:16:16 -0500
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     Jason Wang <jasowang@...hat.com>
Cc:     virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, shahafs@...lanox.com,
        sgarzare@...hat.com, rdunlap@...radead.org
Subject: Re: [PATCH V4 0/3] virtio-pci: introduce modern device module

On Tue, Feb 23, 2021 at 02:19:02PM +0800, Jason Wang wrote:
> Hi all:
> 
> This series tries to implement a vDPA driver for virtio-pci device
> which will bridge between vDPA bus and virtio-pci device.
> 
> This could be used for future feature prototyping and testing.
> 
> Please review

OK just one thing: subject should have had V5, not V4.


> Changes since V4:
> - include the patch to let VIRTIO_PCI_LIB to be auto selected
> - style fixes in the Kconfig for vp-vdpa driver
> - fix the err value returned during vp-vdpa driver probing
> 
> Changes since V3:
> - rebase to vhost.git
> 
> Changes since V2:
> 
> - tweak config prompt
> - switch from 'cb' to 'config_cb' for vp_vdpa config interrupt
> - use a macro for vp_vdpa msix name length
> 
> Changes since V1:
> 
> - don't try to use devres for virtio-pci core
> - tweak the commit log
> - split the patches furtherly to ease the reviewing
> 
> Changes since RFC:
> 
> - Split common codes from virito-pci and share it with vDPA driver
> - Use dynamic id in order to be less confusing with virtio-pci driver
> - No feature whitelist, supporting any features (mq, config etc)
> 
> Jason Wang (3):
>   virtio: don't prompt CONFIG_VIRTIO_PCI_MODERN
>   vdpa: set the virtqueue num during register
>   vdpa: introduce virtio pci driver
> 
>  drivers/vdpa/Kconfig                 |   7 +
>  drivers/vdpa/Makefile                |   1 +
>  drivers/vdpa/ifcvf/ifcvf_main.c      |   5 +-
>  drivers/vdpa/mlx5/net/mlx5_vnet.c    |   4 +-
>  drivers/vdpa/vdpa.c                  |  18 +-
>  drivers/vdpa/vdpa_sim/vdpa_sim.c     |   2 +-
>  drivers/vdpa/vdpa_sim/vdpa_sim_net.c |   2 +-
>  drivers/vdpa/virtio_pci/Makefile     |   2 +
>  drivers/vdpa/virtio_pci/vp_vdpa.c    | 458 +++++++++++++++++++++++++++
>  drivers/virtio/Kconfig               |  11 +-
>  drivers/virtio/Makefile              |   2 +-
>  include/linux/vdpa.h                 |  10 +-
>  12 files changed, 496 insertions(+), 26 deletions(-)
>  create mode 100644 drivers/vdpa/virtio_pci/Makefile
>  create mode 100644 drivers/vdpa/virtio_pci/vp_vdpa.c
> 
> -- 
> 2.25.1