linux-kernel - Re: [PATCH 4/5] mce: remove TIF_MCE

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Date:	Wed, 7 Sep 2011 11:23:27 +0200
From:	Borislav Petkov <bp@...64.org>
To:	"Luck, Tony" <tony.luck@...el.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>, Borislav Petkov <bp@...64.org>,
	Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>
Subject: Re: [PATCH 4/5] mce: remove TIF_MCE_NOTIFY

On Wed, Aug 31, 2011 at 06:26:05PM -0400, Luck, Tony wrote:
> From: Tony Luck <tony.luck@...el.com>
> 
> Hidetoshi Seto has re-worked the notification code to use a
> worker thread for propagating notifications. So TIF_MCE_NOTIFY
> is unused. Previous plans to use this to somehow switch from
> "machine check context" to a more friendly environment to
> deal with immediate errors look like they will never pan out.

Err, I don't get it: patch 1/5 says:

"So keep the [TIF_MCE_NOTIFY] flag for such possible future use, until
better mechanism is introduced."

and here you remove it. AFAIR, last time we agreed on the irq_work ->
realtime recovery thread approach so why not drop this flag in patch 1/5
and forget this one.

Thanks.

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Boris.

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