Symbol: DV_VIRTUAL
sys/dev/nvmm/nvmm.c
1470
CFDRIVER_DECL(nvmm, DV_VIRTUAL, NULL);
sys/kern/vfs_mount.c
1269
case DV_VIRTUAL:
sys/rump/librump/rumpkern/rump.c
99
.dv_class = DV_VIRTUAL