struct pvcalls_data_intf {
	PVCALLS_RING_IDX           in_cons;              /*     0     4 */
	PVCALLS_RING_IDX           in_prod;              /*     4     4 */
	int32_t                    in_error;             /*     8     4 */
	uint8_t                    pad[52];              /*    12    52 */
	/* --- cacheline 1 boundary (64 bytes) --- */
	PVCALLS_RING_IDX           out_cons;             /*    64     4 */
	PVCALLS_RING_IDX           out_prod;             /*    68     4 */
	int32_t                    out_error;            /*    72     4 */
	uint32_t                   ring_order;           /*    76     4 */
	uint16_t                   ref[0];               /*    80     0 */

	/* size: 80, cachelines: 2, members: 9 */
	/* last cacheline: 16 bytes */
};
struct xen_pvcalls_socket {
	uint64_t                   id;                   /*     0     8 */
	uint32_t                   domain;               /*     8     4 */
	uint32_t                   type;                 /*    12     4 */
	uint32_t                   protocol;             /*    16     4 */

	/* size: 24, cachelines: 1, members: 4 */
	/* padding: 4 */
	/* last cacheline: 24 bytes */
};
struct xen_pvcalls_connect {
	uint64_t                   id;                   /*     0     8 */
	uint8_t                    addr[28];             /*     8    28 */
	uint32_t                   len;                  /*    36     4 */
	uint32_t                   flags;                /*    40     4 */
	uint16_t                   ref;                  /*    44     2 */

	/* XXX 2 bytes hole, try to pack */

	uint32_t                   evtchn;               /*    48     4 */

	/* size: 56, cachelines: 1, members: 6 */
	/* sum members: 50, holes: 1, sum holes: 2 */
	/* padding: 4 */
	/* last cacheline: 56 bytes */
};
struct xen_pvcalls_release {
	uint64_t                   id;                   /*     0     8 */
	uint8_t                    reuse;                /*     8     1 */

	/* size: 16, cachelines: 1, members: 2 */
	/* padding: 7 */
	/* last cacheline: 16 bytes */
};
struct xen_pvcalls_bind {
	uint64_t                   id;                   /*     0     8 */
	uint8_t                    addr[28];             /*     8    28 */
	uint32_t                   len;                  /*    36     4 */

	/* size: 40, cachelines: 1, members: 3 */
	/* last cacheline: 40 bytes */
};
struct xen_pvcalls_listen {
	uint64_t                   id;                   /*     0     8 */
	uint32_t                   backlog;              /*     8     4 */

	/* size: 16, cachelines: 1, members: 2 */
	/* padding: 4 */
	/* last cacheline: 16 bytes */
};
struct xen_pvcalls_accept {
	uint64_t                   id;                   /*     0     8 */
	uint64_t                   id_new;               /*     8     8 */
	uint16_t                   ref;                  /*    16     2 */

	/* XXX 2 bytes hole, try to pack */

	uint32_t                   evtchn;               /*    20     4 */

	/* size: 24, cachelines: 1, members: 4 */
	/* sum members: 22, holes: 1, sum holes: 2 */
	/* last cacheline: 24 bytes */
};
struct xen_pvcalls_poll {
	uint64_t                   id;                   /*     0     8 */

	/* size: 8, cachelines: 1, members: 1 */
	/* last cacheline: 8 bytes */
};
struct xen_pvcalls_dummy {
	uint8_t                    dummy[56];            /*     0    56 */

	/* size: 56, cachelines: 1, members: 1 */
	/* last cacheline: 56 bytes */
};
struct xen_pvcalls_request {
	uint32_t                   req_id;               /*     0     4 */
	uint32_t                   cmd;                  /*     4     4 */
	union {
		struct xen_pvcalls_socket socket;        /*          24 */
		struct xen_pvcalls_connect connect;      /*          56 */
		struct xen_pvcalls_release release;      /*          16 */
		struct xen_pvcalls_bind bind;            /*          40 */
		struct xen_pvcalls_listen listen;        /*          16 */
		struct xen_pvcalls_accept accept;        /*          24 */
		struct xen_pvcalls_poll poll;            /*           8 */
		struct xen_pvcalls_dummy dummy;          /*          56 */
	} u;                                             /*     8    56 */
	/* --- cacheline 1 boundary (64 bytes) --- */

	/* size: 64, cachelines: 1, members: 3 */
};
struct _xen_pvcalls_socket {
	uint64_t                   id;                   /*     0     8 */

	/* size: 8, cachelines: 1, members: 1 */
	/* last cacheline: 8 bytes */
};
struct _xen_pvcalls_connect {
	uint64_t                   id;                   /*     0     8 */

	/* size: 8, cachelines: 1, members: 1 */
	/* last cacheline: 8 bytes */
};
struct _xen_pvcalls_release {
	uint64_t                   id;                   /*     0     8 */

	/* size: 8, cachelines: 1, members: 1 */
	/* last cacheline: 8 bytes */
};
struct _xen_pvcalls_bind {
	uint64_t                   id;                   /*     0     8 */

	/* size: 8, cachelines: 1, members: 1 */
	/* last cacheline: 8 bytes */
};
struct _xen_pvcalls_listen {
	uint64_t                   id;                   /*     0     8 */

	/* size: 8, cachelines: 1, members: 1 */
	/* last cacheline: 8 bytes */
};
struct _xen_pvcalls_accept {
	uint64_t                   id;                   /*     0     8 */

	/* size: 8, cachelines: 1, members: 1 */
	/* last cacheline: 8 bytes */
};
struct _xen_pvcalls_poll {
	uint64_t                   id;                   /*     0     8 */

	/* size: 8, cachelines: 1, members: 1 */
	/* last cacheline: 8 bytes */
};
struct _xen_pvcalls_dummy {
	uint8_t                    dummy[8];             /*     0     8 */

	/* size: 8, cachelines: 1, members: 1 */
	/* last cacheline: 8 bytes */
};
struct xen_pvcalls_response {
	uint32_t                   req_id;               /*     0     4 */
	uint32_t                   cmd;                  /*     4     4 */
	int32_t                    ret;                  /*     8     4 */
	uint32_t                   pad;                  /*    12     4 */
	union {
		struct _xen_pvcalls_socket socket;       /*           8 */
		struct _xen_pvcalls_connect connect;     /*           8 */
		struct _xen_pvcalls_release release;     /*           8 */
		struct _xen_pvcalls_bind bind;           /*           8 */
		struct _xen_pvcalls_listen listen;       /*           8 */
		struct _xen_pvcalls_accept accept;       /*           8 */
		struct _xen_pvcalls_poll poll;           /*           8 */
		struct _xen_pvcalls_dummy dummy;         /*           8 */
	} u;                                             /*    16     8 */

	/* size: 24, cachelines: 1, members: 5 */
	/* last cacheline: 24 bytes */
};