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From: Oleg Nesterov <oleg@redhat.com>
To: Borislav Petkov <bp@alien8.de>
Cc: linux-kernel@vger.kernel.org, "Chen,
	Gong" <gong.chen@linux.intel.com>,
	tony.luck@intel.com, x86@kernel.org,
	Peter Zijlstra <peterz@infradead.org>,
	Andy Lutomirski <luto@amacapital.net>
Subject: Re: [PATCH v2 4/5] x86/mce: Simplify flow when handling recoverable memory errors
Date: Wed, 12 Nov 2014 18:20:58 +0100	[thread overview]
Message-ID: <20141112172057.GA8303@redhat.com> (raw)
In-Reply-To: <20141111114248.GD31490@pd.tnic>

Sorry, I am a bit confused...

On 11/11, Borislav Petkov wrote:
>
> Roughly speaking, we want to be able to mark a task with the sign of
> death and to kill it, if needed.

"it" is current, yes?

So I agree with Andy, task_work_add() can work and you can also pass
paddr/restartable to the handler.

But,

> The important part is *before* it
> gets to run again.

But it is already running? Perhaps you meant "before it returns to
user-mode" ?

Oleg.


  parent reply	other threads:[~2014-11-12 17:21 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-14  6:49 x86, MCE: MCE event ring management Chen, Gong
2014-08-14  6:49 ` [PATCH v2 1/5] x86, MCE: Provide a lock-less memory pool to save error record Chen, Gong
2014-08-14  6:49 ` [PATCH v2 2/5] x86, MCE: Don't use percpu for MCE workqueue/irq_work Chen, Gong
2014-08-14  6:49 ` [PATCH v2 3/5] x86, MCE: Remove mce_ring for SRAO error Chen, Gong
2014-08-14  6:49 ` [PATCH v2 4/5] x86/mce: Simplify flow when handling recoverable memory errors Chen, Gong
2014-11-11 11:42   ` Borislav Petkov
2014-11-11 15:42     ` Andy Lutomirski
2014-11-11 16:13       ` Borislav Petkov
2014-11-11 16:22         ` Andy Lutomirski
2014-11-11 16:30           ` Borislav Petkov
2014-11-11 17:15             ` Andy Lutomirski
2014-11-11 18:22               ` Borislav Petkov
2014-11-11 18:34                 ` Andy Lutomirski
2014-11-11 18:38                   ` Borislav Petkov
2014-11-11 20:10                   ` Andy Lutomirski
2014-11-12 17:20     ` Oleg Nesterov [this message]
2014-11-12 17:25       ` Andy Lutomirski
2014-11-12 17:27       ` Borislav Petkov
2014-08-14  6:49 ` [PATCH v2 5/5] x86, MCE: Avoid potential deadlock in MCE context Chen, Gong

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