linux-kernel - Re: [patch] x86: fix fake apicid to node mapping for numa emulation

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Message-ID: <20100506070732.GA32002@elte.hu>
Date:	Thu, 6 May 2010 09:07:32 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	David Rientjes <rientjes@...gle.com>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
	linux-kernel@...r.kernel.org, Yinghai Lu <yinghai@...nel.org>,
	Suresh Siddha <suresh.b.siddha@...el.com>
Subject: Re: [patch] x86: fix fake apicid to node mapping for numa emulation


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

> apicids must be mapped to the lowest node ids to maintain generic kernel use 
> of functions such as cpu_to_node() that determine device affinity.
> 
> Signed-off-by: David Rientjes <rientjes@...gle.com>
> ---
>  Third resend of the same patch.
> 
>  arch/x86/mm/srat_64.c |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletions(-)

There's no info in the changelog about what negative effects this bug had when 
it was found, on what hardware it occured, and what the general urgency of the 
patch is.

Thanks,

	Ingo
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