DRHD_MAX_UNITS
static ACPI_DMAR_HARDWARE_UNIT *drhds[DRHD_MAX_UNITS];
static struct vtdmap *vtdmaps[DRHD_MAX_UNITS];
for (units = 0; units < DRHD_MAX_UNITS; units++) {
if (++units >= DRHD_MAX_UNITS)