From: Xishi Qiu <qiuxishi@huawei.com>
To: Linux MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Subject: mce: a question about memory_failure_early_kill in memory_failure()
Date: Tue, 19 Apr 2016 19:13:34 +0800 [thread overview]
Message-ID: <571612DE.8020908@huawei.com> (raw)
/proc/sys/vm/memory_failure_early_kill
1: means kill all processes that have the corrupted and not reloadable page mapped.
0: means only unmap the corrupted page from all processes and only kill a process
who tries to access it.
If set memory_failure_early_kill to 0, and memory_failure() has been called.
memory_failure()
hwpoison_user_mappings()
collect_procs() // the task(with no PF_MCE_PROCESS flag) is not in the tokill list
try_to_unmap()
If the task access the memory, there will be a page fault,
so the task can not access the original page again, right?
Thanks,
Xishi Qiu
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next reply other threads:[~2016-04-19 11:13 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-19 11:13 Xishi Qiu [this message]
2016-04-20 7:07 ` mce: a question about memory_failure_early_kill in memory_failure() Naoya Horiguchi
2016-04-20 10:51 ` Xishi Qiu
2016-04-20 10:58 ` Xishi Qiu
2016-04-20 23:15 ` Naoya Horiguchi
2016-04-21 3:17 ` Xishi Qiu
2016-04-21 8:20 ` Xishi Qiu
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