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From:   Jason Wang <jasowang@redhat.com>
Date:   Thu, 9 Sep 2021 10:53:25 +0800
Message-ID: <CACGkMEuPUy_fYAGLpj2RYkWGvePhtOVWBa1FGXK0he7s54o4kA@mail.gmail.com>
Subject: Re: [PATCH 3/6] vp_vdpa: add vq irq offloading support
To:     Wu Zongyong <wuzongyong@linux.alibaba.com>
Cc:     virtualization <virtualization@lists.linux-foundation.org>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        mst <mst@redhat.com>, wei.yang1@linux.alibaba.com
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On Wed, Sep 8, 2021 at 8:23 PM Wu Zongyong <wuzongyong@linux.alibaba.com> wrote:
>
> This patch implements the get_vq_irq() callback for virtio pci devices
> to allow irq offloading.
>
> Signed-off-by: Wu Zongyong <wuzongyong@linux.alibaba.com>
> ---
>  drivers/vdpa/virtio_pci/vp_vdpa.c | 8 ++++++++
>  1 file changed, 8 insertions(+)

Acked-by: Jason Wang <jasowang@redhat.com>

>
> diff --git a/drivers/vdpa/virtio_pci/vp_vdpa.c b/drivers/vdpa/virtio_pci/vp_vdpa.c
> index fe0527329857..4c512ae1fe01 100644
> --- a/drivers/vdpa/virtio_pci/vp_vdpa.c
> +++ b/drivers/vdpa/virtio_pci/vp_vdpa.c
> @@ -76,6 +76,13 @@ static u8 vp_vdpa_get_status(struct vdpa_device *vdpa)
>         return vp_modern_get_status(mdev);
>  }
>
> +static int vp_vdpa_get_vq_irq(struct vdpa_device *vdev, u16 idx)
> +{
> +       struct vp_vdpa *vp_vdpa = vdpa_to_vp(vdev);
> +
> +       return vp_vdpa->vring[idx].irq;
> +}
> +
>  static void vp_vdpa_free_irq(struct vp_vdpa *vp_vdpa)
>  {
>         struct virtio_pci_modern_device *mdev = &vp_vdpa->mdev;
> @@ -416,6 +423,7 @@ static const struct vdpa_config_ops vp_vdpa_ops = {
>         .get_config     = vp_vdpa_get_config,
>         .set_config     = vp_vdpa_set_config,
>         .set_config_cb  = vp_vdpa_set_config_cb,
> +       .get_vq_irq     = vp_vdpa_get_vq_irq,
>  };
>
>  static void vp_vdpa_free_irq_vectors(void *data)
> --
> 2.31.1
>