[PATCH v11 24/40] virtio_pci: struct virtio_pci_common_cfg add queue_notify_data

[Jason Wang]

在 2022/6/29 14:56, Xuan Zhuo 写道:
> Add queue_notify_data in struct virtio_pci_common_cfg, which comes from
> here https://github.com/oasis-tcs/virtio-spec/issues/89
>
> Since I want to add queue_reset after queue_notify_data, I submitted
> this patch first.
>
> Signed-off-by: Xuan Zhuo <xuanzhuo at linux.alibaba.com>
> Acked-by: Jason Wang <jasowang at redhat.com>
> ---
>   include/linux/virtio_pci_modern.h | 2 ++
>   include/uapi/linux/virtio_pci.h   | 1 +
>   2 files changed, 3 insertions(+)
>
> diff --git a/include/linux/virtio_pci_modern.h b/include/linux/virtio_pci_modern.h
> index c4f7ffbacb4e..9f31dde46f57 100644
> --- a/include/linux/virtio_pci_modern.h
> +++ b/include/linux/virtio_pci_modern.h
> @@ -29,6 +29,8 @@ struct virtio_pci_common_cfg {
>   	__le32 queue_avail_hi;		/* read-write */
>   	__le32 queue_used_lo;		/* read-write */
>   	__le32 queue_used_hi;		/* read-write */
> +	__le16 queue_notify_data;	/* read-write */
> +	__le16 padding;
>   };


As previous patch, I think it's better to simple embed the uAPI 
structure here.

Thanks


>   
>   struct virtio_pci_modern_device {
> diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h
> index 247ec42af2c8..748b3eb62d2f 100644
> --- a/include/uapi/linux/virtio_pci.h
> +++ b/include/uapi/linux/virtio_pci.h
> @@ -176,6 +176,7 @@ struct virtio_pci_cfg_cap {
>   #define VIRTIO_PCI_COMMON_Q_AVAILHI	44
>   #define VIRTIO_PCI_COMMON_Q_USEDLO	48
>   #define VIRTIO_PCI_COMMON_Q_USEDHI	52
> +#define VIRTIO_PCI_COMMON_Q_NDATA	56
>   
>   #endif /* VIRTIO_PCI_NO_MODERN */
>