linux-kernel - Re: [PATCH v3] NUMA x86: add constraints check for nid parameters

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Message-ID: <20111209071001.GD24537@elte.hu>
Date:	Fri, 9 Dec 2011 08:10:01 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Petr Holasek <pholasek@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
	Anton Arapov <anton@...hat.com>
Subject: Re: [PATCH v3] NUMA x86: add constraints check for nid parameters


* David Rientjes <rientjes@...gle.com> wrote:

> On Thu, 8 Dec 2011, Petr Holasek wrote:
> 
> > This patch adds constraints checks for numa_set_distance()
> > function. It emits warning and avoids a store to a negative
> > index in numa_distance[] array. Negative ids can be passed when
> > pxm-to-nids mapping is not properly filled while parsing the SRAT.
> > 
> > Signed-off-by: Petr Holasek <pholasek@...hat.com>
> 
> Acked-by: David Rientjes <rientjes@...gle.com>

Thanks guys.

Just to double check: there's no known instance of such a bad 
SRAT in existence, so this commit can wait until v3.3 and does 
hot have to go into v3.2, right?

Thanks,

	Ingo
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