linux-kernel - Re: [PATCH 1/2] x86: mce: kdump: use under_crashdumping to turn off MCE in all CPUs together

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Message-ID: <20150224184033.GL3420@pd.tnic>
Date:	Tue, 24 Feb 2015 19:40:33 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	"Luck, Tony" <tony.luck@...el.com>
Cc:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	Naoya Horiguchi <nao.horiguchi@...il.com>,
	Vivek Goyal <vgoyal@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Junichi Nomura <j-nomura@...jp.nec.com>,
	Kiyoshi Ueda <k-ueda@...jp.nec.com>
Subject: Re: [PATCH 1/2] x86: mce: kdump: use under_crashdumping to turn off
 MCE in all CPUs together

On Tue, Feb 24, 2015 at 06:20:16PM +0000, Luck, Tony wrote:
> I'm not sure - the broadcast MCE will still arrive at that cpu - and
> with CR4.MCE==0, it will shutdown. Not sure if that just affects that
> logical thread, or if it pulls a signal line to take down the whole
> machine.

If that is the case, the tolerance level might be the better approach
after all...

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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