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From: Ravikiran Thirumalai <kiran@scalemp.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: Yinghai Lu <Yinghai.Lu@Sun.COM>, Ingo Molnar <mingo@elte.hu>,
	Andrew Morton <akpm@linux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	shai@scalemp.com
Subject: Re: [PATCH] x86_64: make amd quad core 8 socket system not be clustered_box v2
Date: Mon, 25 Feb 2008 11:08:19 -0800	[thread overview]
Message-ID: <20080225190819.GE3143@localdomain> (raw)
In-Reply-To: <20080224122903.GC13637@one.firstfloor.org>

On Sun, Feb 24, 2008 at 01:29:03PM +0100, Andi Kleen wrote:
>On Sat, Feb 23, 2008 at 09:48:42PM -0800, Yinghai Lu wrote:
>> 
>> quad core 8 socket system will have apic id lifting.the apic id range could
>> be [4, 0x23]. and apic_is_clustered_box will think that need to three clusters
>> and that is large than 2. So it is treated as clustered_box.
>
>Ok I see you chose the quick hack over doing it properly ...
>
>> 
>> and will get
>> 
>> Marking TSC unstable due to TSCs unsynchronized
>> 
>> even the CPUs have X86_FEATURE_CONSTANT_TSC set.
>
>I doubt that will do the right thing on AMD based vSMP,
>which also required the cluster check on AMD iirc.
>

Andi, Yes.  AMD based vSMPowered systems uses clustered APICs, and this
check base on cpu vendor id is not good :(.

Thanks,
Kiran

  parent reply	other threads:[~2008-02-25 19:08 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-21 10:58 [PATCH] x86_64: make amd quad core 8 socket system not be clustered_box Yinghai Lu
2008-02-22 12:25 ` Andi Kleen
2008-02-22 19:02   ` Yinghai Lu
2008-02-22 19:00     ` Andi Kleen
2008-02-22 19:04       ` Yinghai Lu
2008-02-22 19:07         ` Andi Kleen
2008-02-22 19:07           ` Yinghai Lu
2008-02-22 19:10             ` Andi Kleen
2008-02-23  8:55               ` Yinghai Lu
2008-02-24  5:48       ` [PATCH] x86_64: make amd quad core 8 socket system not be clustered_box v2 Yinghai Lu
2008-02-24  7:50         ` Ingo Molnar
2008-02-24 12:29         ` Andi Kleen
2008-02-24 23:00           ` Yinghai Lu
2008-02-25  1:52             ` Yinghai Lu
2008-02-25  2:32             ` Yinghai Lu
2008-02-25  5:36               ` [PATCH] x86_64: for apic_is_clustered_box for vsmp v2 Yinghai Lu
2008-02-25  6:43                 ` [PATCH] x86: vSMP selection in config Yinghai Lu
2008-02-26 19:40                   ` Kconfig configuration restore bug [Was: x86: vSMP selection in config] Sam Ravnborg
2008-02-27  2:59                     ` Roman Zippel
2008-02-29  4:09                     ` [PATCH 1/3] fix recursive dependencies Roman Zippel
2008-02-29  5:05                       ` Yinghai Lu
2008-02-29 13:22                         ` Roman Zippel
2008-02-29 17:40                           ` Sam Ravnborg
2008-02-29 20:05                             ` Ingo Molnar
2008-02-29 20:04                       ` Ingo Molnar
2008-02-29  4:10                     ` [PATCH 2/3] fix choice dependency check Roman Zippel
2008-04-28 21:08                       ` Sam Ravnborg
2008-02-29  4:11                     ` [PATCH 3/3] add named choice group Roman Zippel
2008-02-26 20:05                   ` [PATCH] x86: vSMP selection in config Sam Ravnborg
2008-02-26 21:03                     ` Yinghai Lu
2008-02-25  5:39           ` [PATCH] x86_64: make amd quad core 8 socket system not be clustered_box v2 Yinghai Lu
2008-02-25 19:08           ` Ravikiran Thirumalai [this message]
2008-02-25 22:05             ` Yinghai Lu
2008-02-26  3:39               ` Ravikiran Thirumalai
2008-02-26  3:46                 ` Andi Kleen
2008-02-26  4:05                   ` Ravikiran Thirumalai
2008-02-26  5:27                     ` Yinghai Lu
2008-02-26 18:42                       ` Ravikiran Thirumalai
2008-02-26 19:00                         ` Yinghai Lu
2008-02-26 20:32                           ` Ravikiran Thirumalai
2008-02-26 21:09                             ` Yinghai Lu
2008-02-26 21:10                             ` Yinghai Lu
2008-02-26 21:24                               ` Ravikiran Thirumalai
2008-02-26 23:16                                 ` Yinghai Lu
2008-02-26 23:31                                   ` Ravikiran Thirumalai
2008-02-26 23:41                                     ` Yinghai Lu
2008-02-22 19:08     ` [PATCH] x86_64: make amd quad core 8 socket system not be clustered_box Yinghai Lu
2008-02-22 18:59       ` Andi Kleen

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