linux-kernel - Re: [tip:x86/apic] x86: Add NumaChip support

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Date:	Mon, 5 Dec 2011 21:31:30 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	mingo@...hat.com, hpa@...or.com, linux-kernel@...r.kernel.org,
	sp@...ascale.com, jbarnes@...tuousgeek.org, tglx@...utronix.de,
	daniel@...ascale-asia.com
Cc:	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/apic] x86: Add NumaChip support


* tip-bot for Steffen Persvold <sp@...ascale.com> wrote:

> Commit-ID:  44b111b519160e33fdc41eadb39af86a24707edf
> Gitweb:     http://git.kernel.org/tip/44b111b519160e33fdc41eadb39af86a24707edf
> Author:     Steffen Persvold <sp@...ascale.com>
> AuthorDate: Tue, 6 Dec 2011 00:07:26 +0800
> Committer:  Ingo Molnar <mingo@...e.hu>
> CommitDate: Mon, 5 Dec 2011 17:17:24 +0100
> 
> x86: Add NumaChip support
> 
> Adds support for Numascale NumaChip large-SMP systems. It is
> needed to enable the booting of more than ~168 cores.
> 
> v2:
>  - [Steffen] enumerate only accessible northbridges
>  - [Daniel] rediffed and validated against 3.1-rc10
> 
> v3:
>  - [Daniel] use x86_init core numbering override
>  - [Daniel] cleanups as per feedback
> 
> v4:
>  - [Daniel] use updated x86_cpuinit override
> 
> v5:
>  - drop disabling interrupts locally, as ISR write is atomic; drop delay
>  - added read-mostly annotations where appropriate
>  - require CONFIG_SMP, so drop conditional path
> 
> Workload tested on 96 cores/16 sockets.
> 
> Signed-off-by: Steffen Persvold <sp@...ascale.com>
> Signed-off-by: Daniel J Blueman <daniel@...ascale-asia.com>
> Cc: Jesse Barnes <jbarnes@...tuousgeek.org>
> Link: http://lkml.kernel.org/r/1323101246-2400-1-git-send-email-daniel@numascale-asia.com
> Signed-off-by: Ingo Molnar <mingo@...e.hu>

There's a new build failure caused by this commit:

 arch/x86/kernel/cpu/common.c:1149:2: error: ‘struct cpuinfo_x86’ has no member named ‘phys_proc_id’

Note that the config is a !SMP one - that's probably the key 
detail.

Please send a delta fix that resolves this bug. You can find the 
current lineup in:

  git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git

Thanks,

	Ingo

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