From: Joe Jin <joe.jin@oracle.com>
To: "Luck, Tony" <tony.luck@intel.com>
Cc: Jiang Liu <liuj97@gmail.com>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
david zhuang <david.zhuang@oracle.com>
Subject: Re: Why write CPER_NOTIFY_MCE to ERST when reboot
Date: Sat, 01 Jun 2013 09:33:54 +0800 [thread overview]
Message-ID: <51A94F82.40902@oracle.com> (raw)
In-Reply-To: <3908561D78D1C84285E8C5FCA982C28F2DA71899@ORSMSX106.amr.corp.intel.com>
Tony and Gerry, thanks!
Regards,
Joe
On 06/01/13 02:29, Luck, Tony wrote:
> Gerry has this right - we want to preserve the error information, but we
> don't trust our kernel enough to have it write to a regular disk (perhaps
> it has no access to I/O because of the error - or worse, perhaps it might
> write to the wrong place or the wrong disk).
>
> In theory data the information in the machine check banks is preserved
> across a warm reset for the reboot - but in practice we may sometimes
> need a power-cycle and full cold reset. Also I've heard that on some systems
> the BIOS clears the banks before the OS can see them.
>
> -Tony
>
--
Oracle <http://www.oracle.com>
Joe Jin | Software Development Senior Manager | +8610.6106.5624
ORACLE | Linux and Virtualization
No. 24 Zhongguancun Software Park, Haidian District | 100193 Beijing
prev parent reply other threads:[~2013-06-01 1:34 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
2013-05-31 18:29 ` Luck, Tony
2013-06-01 1:33 ` Joe Jin [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=51A94F82.40902@oracle.com \
--to=joe.jin@oracle.com \
--cc=david.zhuang@oracle.com \
--cc=linux-acpi@vger.kernel.org \
--cc=liuj97@gmail.com \
--cc=tony.luck@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox