linux-kernel - Re: [PATCH] x86_64: make amd quad core 8 socket system not be clustered

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Date:	Tue, 26 Feb 2008 12:32:35 -0800
From:	Ravikiran Thirumalai <kiran@...lemp.com>
To:	Yinghai Lu <yhlu.kernel@...il.com>
Cc:	Andi Kleen <andi@...stfloor.org>, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	shai@...lemp.com
Subject: Re: [PATCH] x86_64: make amd quad core 8 socket system not be clustered_box v2

On Tue, Feb 26, 2008 at 11:00:58AM -0800, Yinghai Lu wrote:
>
>1. if acpi=off ?

Well that is not a realistic scenario for any multi chassi NUMA machine,
since the proximity information is very important and turning acpi off
deprives the OS of this information.

>2. some system will be treated wrong.
>my four sockets system
>ACPI: SLIT: nodes = 4
> 10 13 13 16
> 13 10 16 13
> 13 16 10 13
> 16 13 13 10
>my eight sockets system

This makes it difficult to use SLIT for multi chassi detection then :(.
Did not know such SLIT tables existed on single board machines.

Thanks,
Kiran
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