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Date: Sat, 2 Feb 2019 11:18:36 +0800
From: Jason Wang <jasowang@...hat.com>
To: "Michael S. Tsirkin" <mst@...hat.com>, linux-kernel@...r.kernel.org
Cc: Tiwei Bie <tiwei.bie@...el.com>,
virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH] virtio: drop internal struct from UAPI
On 2019/2/2 上午6:16, Michael S. Tsirkin wrote:
> There's no reason to expose struct vring_packed in UAPI - if we do we
> won't be able to change or drop it, and it's not part of any interface.
>
> Let's move it to virtio_ring.c
>
> Cc: Tiwei Bie <tiwei.bie@...el.com>
> Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
> ---
> drivers/virtio/virtio_ring.c | 7 ++++++-
> include/uapi/linux/virtio_ring.h | 10 ----------
> 2 files changed, 6 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
> index 412e0c431d87..1c85b3423182 100644
> --- a/drivers/virtio/virtio_ring.c
> +++ b/drivers/virtio/virtio_ring.c
> @@ -152,7 +152,12 @@ struct vring_virtqueue {
> /* Available for packed ring */
> struct {
> /* Actual memory layout for this queue. */
> - struct vring_packed vring;
> + struct {
> + unsigned int num;
> + struct vring_packed_desc *desc;
> + struct vring_packed_desc_event *driver;
> + struct vring_packed_desc_event *device;
> + } vring;
>
> /* Driver ring wrap counter. */
> bool avail_wrap_counter;
> diff --git a/include/uapi/linux/virtio_ring.h b/include/uapi/linux/virtio_ring.h
> index 2414f8af26b3..4c4e24c291a5 100644
> --- a/include/uapi/linux/virtio_ring.h
> +++ b/include/uapi/linux/virtio_ring.h
> @@ -213,14 +213,4 @@ struct vring_packed_desc {
> __le16 flags;
> };
>
> -struct vring_packed {
> - unsigned int num;
> -
> - struct vring_packed_desc *desc;
> -
> - struct vring_packed_desc_event *driver;
> -
> - struct vring_packed_desc_event *device;
> -};
> -
> #endif /* _UAPI_LINUX_VIRTIO_RING_H */
Acked-by: Jason Wang <jasowang@...hat.com>
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