> ## Ring Setup
>
> The shared page has the following layout:
>
> typedef uint32_t XEN_9PFS_RING_IDX;
>
> struct xen_9pfs_intf {
> XEN_9PFS_RING_IDX in_cons, in_prod;
> uint8_t pad[56];
> XEN_9PFS_RING_IDX out_cons, out_prod;
>
> uint32_t ring_order;
> /* this is an array of (1 << ring_order) elements */
> grant_ref_t ref[1];
> };
>
> /* not actually C compliant (ring_order changes from ring to ring) */
> struct ring_data {
> char in[((1 << ring_order) << PAGE_SHIFT) / 2];
> char out[((1 << ring_order) << PAGE_SHIFT) / 2];
> };
>
This is the same comment about the the PV Calls structure.
Would it make sense to add the 'in_events' and 'out_events'
as a notification mechanism?
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