From: Jiang Liu <liuj97@gmail.com>
To: Joe Jin <joe.jin@oracle.com>
Cc: linux-acpi@vger.kernel.org,
david zhuang <david.zhuang@oracle.com>,
Tony Luck <tony.luck@intel.com>
Subject: Re: Why write CPER_NOTIFY_MCE to ERST when reboot
Date: Sat, 01 Jun 2013 00:04:25 +0800 [thread overview]
Message-ID: <51A8CA09.1060709@gmail.com> (raw)
In-Reply-To: <51A85DCC.3000109@oracle.com>
On Fri 31 May 2013 04:22:36 PM CST, Joe Jin wrote:
> Hi Tony,
>
> With commit 0bb77c46 "pstore: X86 platform interface using ACPI/APEI/ERST"
> when reboot the server kernel will call erst_writer() to write CPER_NOTIFY_MCE
> to ERST, if reboot the server to Windows we find MCE from system event logs.
> Any reason write this to ERST when reboot?
>
> Any input will appreciate!
>
> Regards,
> Joe
> --
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Hi Joe,
I guess this is used to handle an uncorrectable MCE. When
uncorrectable MCE happens,
the whole disk io stack is unreliable so we couldn't write MCE record
to disk, ERST is the
last method to store the MCE record and OS could retrieve this record
from ERST on next
reboot.
Regards!
Gerry
next prev parent reply other threads:[~2013-05-31 16:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-31 8:22 Why write CPER_NOTIFY_MCE to ERST when reboot Joe Jin
2013-05-31 16:04 ` Jiang Liu [this message]
2013-05-31 18:29 ` Luck, Tony
2013-06-01 1:33 ` Joe Jin
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