struct xenkbd_motion {
	uint8_t                    type;                 /*     0     1 */

	/* XXX 3 bytes hole, try to pack */

	int32_t                    rel_x;                /*     4     4 */
	int32_t                    rel_y;                /*     8     4 */
	int32_t                    rel_z;                /*    12     4 */

	/* size: 16, cachelines: 1, members: 4 */
	/* sum members: 13, holes: 1, sum holes: 3 */
	/* last cacheline: 16 bytes */
};
struct xenkbd_key {
	uint8_t                    type;                 /*     0     1 */
	uint8_t                    pressed;              /*     1     1 */

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

	uint32_t                   keycode;              /*     4     4 */

	/* size: 8, cachelines: 1, members: 3 */
	/* sum members: 6, holes: 1, sum holes: 2 */
	/* last cacheline: 8 bytes */
};
struct xenkbd_position {
	uint8_t                    type;                 /*     0     1 */

	/* XXX 3 bytes hole, try to pack */

	int32_t                    abs_x;                /*     4     4 */
	int32_t                    abs_y;                /*     8     4 */
	int32_t                    rel_z;                /*    12     4 */

	/* size: 16, cachelines: 1, members: 4 */
	/* sum members: 13, holes: 1, sum holes: 3 */
	/* last cacheline: 16 bytes */
};
struct xenkbd_mtouch {
	uint8_t                    type;                 /*     0     1 */
	uint8_t                    event_type;           /*     1     1 */
	uint8_t                    contact_id;           /*     2     1 */
	uint8_t                    reserved[5];          /*     3     5 */
	union {
		struct {
			int32_t    abs_x;                /*     8     4 */
			int32_t    abs_y;                /*    12     4 */
		} pos;                                   /*           8 */
		struct {
			uint32_t   major;                /*     8     4 */
			uint32_t   minor;                /*    12     4 */
		} shape;                                 /*           8 */
		int16_t            orientation;          /*           2 */
	} u;                                             /*     8     8 */

	/* size: 16, cachelines: 1, members: 5 */
	/* last cacheline: 16 bytes */
};
struct xenkbd_page {
	uint32_t                   in_cons;              /*     0     4 */
	uint32_t                   in_prod;              /*     4     4 */
	uint32_t                   out_cons;             /*     8     4 */
	uint32_t                   out_prod;             /*    12     4 */

	/* size: 16, cachelines: 1, members: 4 */
	/* last cacheline: 16 bytes */
};