Re: [Xen-devel] [PATCH v2 2/3] sndif: Add explicit back and front synchronization

[Oleksandr Andrushchenko <andr2000@xxxxxxxxx>]

On 03/15/2018 10:17 PM, Konrad Rzeszutek Wilk wrote:
> > + ******************************************************************************
> > + *                        Back to front events delivery
> > + ******************************************************************************
> > + * In order to deliver asynchronous events from back to front a shared page is
> > + * allocated by front and its granted reference propagated to back via
> > + * XenStore entries (evt-ring-ref/evt-event-channel).
> > + * This page has a common header used by both front and back to synchronize
> > + * access and control event's ring buffer, while back being a producer of the
> > + * events and front being a consumer. The rest of the page after the header
> > + * is used for event packets.
> > + *
> > + * Upon reception of an event(s) front may confirm its reception
> > + * for either each event, group of events or none.
> > + */
> > +
> > +struct xensnd_event_page {
> > +    uint32_t in_cons;
> > +    uint32_t in_prod;
> > +    uint8_t reserved[24];
> Could this be aligned at 64 bytes?
Sure, will make the struct 64 bytes
> > +};
> > +

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