On 2014-09-13, Hansen, Dave wrote: > On 09/11/2014 01:46 AM, Qiaowei Ren wrote: >> +static int allocate_bt(long __user *bd_entry) { >> + unsigned long bt_addr, old_val = 0; >> + int ret = 0; >> + >> + bt_addr = mpx_mmap(MPX_BT_SIZE_BYTES); >> + if (IS_ERR((void *)bt_addr)) >> + return bt_addr; >> + bt_addr = (bt_addr & MPX_BT_ADDR_MASK) | > MPX_BD_ENTRY_VALID_FLAG; > > Qiaowei, why do we need the "& MPX_BT_ADDR_MASK" here?
It should be not necessary, and can be removed. Thanks, Qiaowei -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/