xen_pvcalls_sring 40 drivers/xen/pvcalls-back.c struct xen_pvcalls_sring *sring; xen_pvcalls_sring 1134 drivers/xen/pvcalls-front.c struct xen_pvcalls_sring *sring; xen_pvcalls_sring 1177 drivers/xen/pvcalls-front.c sring = (struct xen_pvcalls_sring *) __get_free_page(GFP_KERNEL |