linux-kernel - Re: [PATCH 07/19] virtio: switch to use vring_virtqueue for virtqueue

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Message-ID: <CAJaqyWdVXNH-W4hbgiLS+8O--atXQDE8bqN23Z5M9rnOFx4g4A@mail.gmail.com>
Date: Wed, 26 Mar 2025 13:30:11 +0100
From: Eugenio Perez Martin <eperezma@...hat.com>
To: Jason Wang <jasowang@...hat.com>
Cc: mst@...hat.com, xuanzhuo@...ux.alibaba.com, virtualization@...ts.linux.dev, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 07/19] virtio: switch to use vring_virtqueue for
 virtqueue_add variants

On Mon, Mar 24, 2025 at 6:44 AM Jason Wang <jasowang@...hat.com> wrote:
>
> Those variants are used internally so let's switch to use
> vring_virtqueue as parameter to be consistent with other internal
> virtqueue helpers.
>
> Signed-off-by: Jason Wang <jasowang@...hat.com>

Acked-by: Eugenio Pérez <eperezma@...hat.com>

> ---
>  drivers/virtio/virtio_ring.c | 16 +++++++---------
>  1 file changed, 7 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
> index 619869e80309..3fab40648c75 100644
> --- a/drivers/virtio/virtio_ring.c
> +++ b/drivers/virtio/virtio_ring.c
> @@ -812,11 +812,10 @@ static bool more_used_split(const struct vring_virtqueue *vq)
>         return virtqueue_poll_split(vq, vq->last_used_idx);
>  }
>
> -static void *virtqueue_get_buf_ctx_split(struct virtqueue *_vq,
> +static void *virtqueue_get_buf_ctx_split(struct vring_virtqueue *vq,
>                                          unsigned int *len,
>                                          void **ctx)
>  {
> -       struct vring_virtqueue *vq = to_vvq(_vq);
>         void *ret;
>         unsigned int i;
>         u16 last_used;
> @@ -838,9 +837,9 @@ static void *virtqueue_get_buf_ctx_split(struct virtqueue *_vq,
>         virtio_rmb(vq->weak_barriers);
>
>         last_used = (vq->last_used_idx & (vq->split.vring.num - 1));
> -       i = virtio32_to_cpu(_vq->vdev,
> +       i = virtio32_to_cpu(vq->vq.vdev,
>                         vq->split.vring.used->ring[last_used].id);
> -       *len = virtio32_to_cpu(_vq->vdev,
> +       *len = virtio32_to_cpu(vq->vq.vdev,
>                         vq->split.vring.used->ring[last_used].len);
>
>         if (unlikely(i >= vq->split.vring.num)) {
> @@ -862,7 +861,7 @@ static void *virtqueue_get_buf_ctx_split(struct virtqueue *_vq,
>         if (!(vq->split.avail_flags_shadow & VRING_AVAIL_F_NO_INTERRUPT))
>                 virtio_store_mb(vq->weak_barriers,
>                                 &vring_used_event(&vq->split.vring),
> -                               cpu_to_virtio16(_vq->vdev, vq->last_used_idx));
> +                               cpu_to_virtio16(vq->vq.vdev, vq->last_used_idx));
>
>         LAST_ADD_TIME_INVALID(vq);
>
> @@ -1721,11 +1720,10 @@ static bool more_used_packed(const struct vring_virtqueue *vq)
>         return virtqueue_poll_packed(vq, READ_ONCE(vq->last_used_idx));
>  }
>
> -static void *virtqueue_get_buf_ctx_packed(struct virtqueue *_vq,
> +static void *virtqueue_get_buf_ctx_packed(struct vring_virtqueue *vq,
>                                           unsigned int *len,
>                                           void **ctx)
>  {
> -       struct vring_virtqueue *vq = to_vvq(_vq);
>         u16 last_used, id, last_used_idx;
>         bool used_wrap_counter;
>         void *ret;
> @@ -2521,8 +2519,8 @@ void *virtqueue_get_buf_ctx(struct virtqueue *_vq, unsigned int *len,
>  {
>         struct vring_virtqueue *vq = to_vvq(_vq);
>
> -       return vq->packed_ring ? virtqueue_get_buf_ctx_packed(_vq, len, ctx) :
> -                                virtqueue_get_buf_ctx_split(_vq, len, ctx);
> +       return vq->packed_ring ? virtqueue_get_buf_ctx_packed(vq, len, ctx) :
> +                                virtqueue_get_buf_ctx_split(vq, len, ctx);
>  }
>  EXPORT_SYMBOL_GPL(virtqueue_get_buf_ctx);
>
> --
> 2.42.0
>