GEN6_STOLEN_RESERVED_ADDR_MASK
*base = reg_val & GEN6_STOLEN_RESERVED_ADDR_MASK;
*base = reg_val & GEN6_STOLEN_RESERVED_ADDR_MASK;
if (!(reg_val & GEN6_STOLEN_RESERVED_ADDR_MASK))
*base = reg_val & GEN6_STOLEN_RESERVED_ADDR_MASK;