linux-kernel - Re: [PATCH v2 4/5] x86/mce: Simplify flow when handling recoverable memory errors

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Message-ID: <20141112172057.GA8303@redhat.com>
Date:	Wed, 12 Nov 2014 18:20:58 +0100
From:	Oleg Nesterov <oleg@...hat.com>
To:	Borislav Petkov <bp@...en8.de>
Cc:	linux-kernel@...r.kernel.org,
	"Chen, Gong" <gong.chen@...ux.intel.com>, tony.luck@...el.com,
	x86@...nel.org, Peter Zijlstra <peterz@...radead.org>,
	Andy Lutomirski <luto@...capital.net>
Subject: Re: [PATCH v2 4/5] x86/mce: Simplify flow when handling
	recoverable memory errors

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.

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