linux-kernel - Re: [PATCH] prctl: return MCE process flags through pointer

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Message-Id: <20091222173424.980d5d33.akpm@linux-foundation.org>
Date:	Tue, 22 Dec 2009 17:34:24 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	"Smith, GeoffX" <geoffx.smith@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Michael Stone <michael@...top.org>
Subject: Re: [PATCH] prctl: return MCE process flags through pointer

On Wed, 23 Dec 2009 02:14:51 +0100 Andi Kleen <andi@...stfloor.org> wrote:

> "Smith, GeoffX" <geoffx.smith@...el.com> writes:
> 
> > This patch fixes the semantics of prctl() option PR_MCE_KILL_GET 
> > to pass the return value through *arg2.
> >
> > With this change, the option now follows the same conventions as the
> > other "get" options added since 2.6.0, and also brings it into
> > conformance with the advice in chapter 16 of Documentation/CodingStyle.
> >
> > This prctl() option was only added within the last month, so there are
> > not any production applications to break.  This patch applies cleanly
> > to mainline and to 2.6.32.2 for backporting.
> 
> It breaks the test suite, the man pages, qemu and one slide deck at least.
> 

Should've got it right the first time.

What goes wrong with qemu?
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