lkml.org 
[lkml]   [2019]   [Sep]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
SubjectRe: [PATCH] virtio: add VIRTIO_RING_NO_LEGACY
On Fri, Sep 06, 2019 at 12:42:14PM +0000, Matej Genci wrote:
> Add macro to disable legacy functions vring_init and vring_size.
>
> Signed-off-by: Matej Genci <matej.genci@nutanix.com>
> ---
> include/uapi/linux/virtio_ring.h | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/include/uapi/linux/virtio_ring.h b/include/uapi/linux/virtio_ring.h
> index 4c4e24c291a5..496db2f33830 100644
> --- a/include/uapi/linux/virtio_ring.h
> +++ b/include/uapi/linux/virtio_ring.h
> @@ -164,6 +164,8 @@ struct vring {
> #define vring_used_event(vr) ((vr)->avail->ring[(vr)->num])
> #define vring_avail_event(vr) (*(__virtio16 *)&(vr)->used->ring[(vr)->num])
>
> +#ifndef VIRTIO_RING_NO_LEGACY
> +
> static inline void vring_init(struct vring *vr, unsigned int num, void *p,
> unsigned long align)
> {
> @@ -181,6 +183,8 @@ static inline unsigned vring_size(unsigned int num, unsigned long align)
> + sizeof(__virtio16) * 3 + sizeof(struct vring_used_elem) * num;
> }
>
> +#endif
> +
> /* The following is used with USED_EVENT_IDX and AVAIL_EVENT_IDX */
> /* Assuming a given event_idx value from the other side, if
> * we have just incremented index from old to new_idx,

Thanks!
I am guessing vring_used_event/vring_avail_event should be within
this ifndef too? How about struct vring?


> --
> 2.22.0
>

\
 
 \ /
  Last update: 2019-09-06 16:07    [W:0.029 / U:0.892 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site