linux-kernel - Re: [PATCH 07/10] MCE: replace mce.c use of TIF_MCE_NOTIFY with user_return

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Message-ID: <20110612135348.GA20439@aftab>
Date:	Sun, 12 Jun 2011 15:53:48 +0200
From:	Borislav Petkov <bp@...64.org>
To:	Avi Kivity <avi@...hat.com>
Cc:	Borislav Petkov <bp@...64.org>, "Luck, Tony" <tony.luck@...el.com>,
	Ingo Molnar <mingo@...e.hu>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Huang, Ying" <ying.huang@...el.com>,
	Hidetoshi Seto <seto.hidetoshi@...fujitsu.com>
Subject: Re: [PATCH 07/10] MCE: replace mce.c use of TIF_MCE_NOTIFY with
 user_return_notifier

On Sun, Jun 12, 2011 at 06:30:07AM -0400, Avi Kivity wrote:
> You're missing the flow.  The MCE handler calls irq_work_queue(), which 
> schedules a user return notifier, which does any needed processing in 
> task context.

Ah ok, this will obviate the need for atomic lists in the user return
notifier. This could work, yep.

Thanks for clarifying.

-- 
Regards/Gruss,
Boris.

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