From: Borislav Petkov <bp@alien8.de>
To: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: "Luck, Tony" <tony.luck@intel.com>,
Ingo Molnar <mingo@kernel.org>,
Prarit Bhargava <prarit@redhat.com>,
Vivek Goyal <vgoyal@redhat.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Junichi Nomura <j-nomura@ce.jp.nec.com>,
Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Subject: Re: [PATCH v8] x86: mce: kexec: switch MCE handler for kexec/kdump
Date: Fri, 10 Apr 2015 09:24:48 +0200 [thread overview]
Message-ID: <20150410072448.GA28074@pd.tnic> (raw)
In-Reply-To: <20150410040726.GB3623@hori1.linux.bs1.fc.nec.co.jp>
On Fri, Apr 10, 2015 at 04:07:26AM +0000, Naoya Horiguchi wrote:
> ... wait, changing cpu_online_mask might confuse admins who try to
> analyze the kdump, especially when the problems causing panic are CPU
> related issues?
Well, if you're offlining the CPUs before doing the dump, you're already
changing the system, aren't you? So why lie to people?
> In the similar way, changing tolerant value loses the original value,
> although this is unlikely to be a problem. But if we change it, using
> an upper bit to keep lowest 2 bit to save the original value is better?
I don't think that you need to do that - you can see from the original
kernel's dmesg whether an MCE happened - we're normally very vocal. If
the user tried to deliberately suppress that, then that's her fault
only.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
--
next prev parent reply other threads:[~2015-04-10 7:27 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-03 9:01 [PATCH v3 1/2] x86: mce: kexec: switch MCE handler for kexec/kdump Naoya Horiguchi
2015-03-03 9:01 ` [PATCH v3 2/2] x86: mce: comment about MCE synchronization timeout on definition of tolerant Naoya Horiguchi
2015-03-03 18:09 ` [PATCH v3 1/2] x86: mce: kexec: switch MCE handler for kexec/kdump Luck, Tony
2015-03-04 7:41 ` [PATCH v4] " Naoya Horiguchi
2015-03-04 23:12 ` Luck, Tony
2015-03-05 1:24 ` Naoya Horiguchi
2015-03-05 6:45 ` [PATCH v5] " Naoya Horiguchi
2015-03-05 8:57 ` Borislav Petkov
2015-03-05 9:37 ` Naoya Horiguchi
2015-03-06 2:59 ` [PATCH v6] " Naoya Horiguchi
2015-03-06 8:34 ` Borislav Petkov
2015-03-06 9:09 ` Naoya Horiguchi
2015-03-06 9:27 ` Borislav Petkov
2015-03-06 9:32 ` Naoya Horiguchi
2015-03-06 10:22 ` [PATCH v7] " Naoya Horiguchi
2015-04-06 7:18 ` Naoya Horiguchi
2015-04-06 11:59 ` Borislav Petkov
2015-04-07 8:00 ` Naoya Horiguchi
2015-04-07 8:02 ` [PATCH v8] " Naoya Horiguchi
2015-04-09 6:13 ` Borislav Petkov
2015-04-09 6:57 ` Naoya Horiguchi
2015-04-09 7:02 ` Borislav Petkov
2015-04-09 18:07 ` Luck, Tony
2015-04-09 8:00 ` Ingo Molnar
2015-04-09 8:21 ` Borislav Petkov
2015-04-09 8:59 ` Naoya Horiguchi
2015-04-09 9:53 ` Borislav Petkov
2015-04-09 18:22 ` Luck, Tony
2015-04-09 19:05 ` Borislav Petkov
2015-04-10 0:49 ` Naoya Horiguchi
2015-04-10 4:07 ` Naoya Horiguchi
2015-04-10 7:24 ` Borislav Petkov [this message]
2015-04-28 8:41 ` Baoquan He
2015-04-09 8:39 ` Naoya Horiguchi
2015-04-09 9:13 ` Ingo Molnar
2015-04-06 11:56 ` [PATCH v7] " Borislav Petkov
2015-04-07 7:59 ` Naoya Horiguchi
2015-03-06 8:28 ` [PATCH v5] " Borislav Petkov
2015-03-06 5:44 ` [PATCH v4] " Naoya Horiguchi
2015-03-05 8:48 ` Borislav Petkov
2015-03-03 18:53 ` [PATCH v3 1/2] " Borislav Petkov
2015-03-04 7:51 ` Naoya Horiguchi
2015-03-04 9:12 ` Borislav Petkov
2015-03-05 1:27 ` Naoya Horiguchi
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=20150410072448.GA28074@pd.tnic \
--to=bp@alien8.de \
--cc=j-nomura@ce.jp.nec.com \
--cc=k-ueda@ct.jp.nec.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=n-horiguchi@ah.jp.nec.com \
--cc=prarit@redhat.com \
--cc=tony.luck@intel.com \
--cc=vgoyal@redhat.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.