[Sound-open-firmware] [PATCH v5 1/4] vhost: convert VHOST_VSOCK_SET_RUNNING to a generic ioctl

[Mathieu Poirier]

On Wed, Aug 26, 2020 at 07:46:33PM +0200, Guennadi Liakhovetski wrote:
> VHOST_VSOCK_SET_RUNNING is used by the vhost vsock driver to perform
> crucial VirtQueue initialisation, like assigning .private fields and
> calling vhost_vq_init_access(), and clean up. However, this ioctl is
> actually extremely useful for any vhost driver, that doesn't have a
> side channel to inform it of a status change, e.g. upon a guest
> reboot. This patch makes that ioctl generic, while preserving its
> numeric value and also keeping the original alias.
> 
> Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski at linux.intel.com>
> ---
>  include/uapi/linux/vhost.h | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/include/uapi/linux/vhost.h b/include/uapi/linux/vhost.h
> index 75232185324a..11a4948b6216 100644
> --- a/include/uapi/linux/vhost.h
> +++ b/include/uapi/linux/vhost.h
> @@ -97,6 +97,8 @@
>  #define VHOST_SET_BACKEND_FEATURES _IOW(VHOST_VIRTIO, 0x25, __u64)
>  #define VHOST_GET_BACKEND_FEATURES _IOR(VHOST_VIRTIO, 0x26, __u64)
>  
> +#define VHOST_SET_RUNNING _IOW(VHOST_VIRTIO, 0x61, int)
> +

I don't see it used in the next patches and as such should be part of another
series.

>  /* VHOST_NET specific defines */
>  
>  /* Attach virtio net ring to a raw socket, or tap device.
> @@ -118,7 +120,7 @@
>  /* VHOST_VSOCK specific defines */
>  
>  #define VHOST_VSOCK_SET_GUEST_CID	_IOW(VHOST_VIRTIO, 0x60, __u64)
> -#define VHOST_VSOCK_SET_RUNNING		_IOW(VHOST_VIRTIO, 0x61, int)
> +#define VHOST_VSOCK_SET_RUNNING		VHOST_SET_RUNNING
>  
>  /* VHOST_VDPA specific defines */
>  
> -- 
> 2.28.0
>