From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with SMTP id 2EC836B01B5 for ; Thu, 3 Jun 2010 09:41:35 -0400 (EDT) Date: Thu, 3 Jun 2010 08:34:20 -0500 (CDT) From: Christoph Lameter Subject: Re: Possible bug in 2.6.34 slub In-Reply-To: Message-ID: References: <20100531165528.35a323fb.rdunlap@xenotime.net> <4C047CF9.9000804@tmr.com> <20100601123959.747228c6.rdunlap@xenotime.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: Pekka Enberg Cc: Randy Dunlap , Giangiacomo Mariotti , Bill Davidsen , linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86 maintainers , Ingo Molnar , "H. Peter Anvin" List-ID: On Thu, 3 Jun 2010, Pekka Enberg wrote: > On Tue, Jun 1, 2010 at 10:48 PM, Christoph Lameter > wrote: > > On Tue, 1 Jun 2010, Randy Dunlap wrote: > > > >> > >>> My cpu is an I7 920, so it has 4 cores and there's hyperthreading > >> > >>> enabled, so there are 8 logical cpus. Is this a bug? > > > > Yes its a bug in the arch code or BIOS. The system configuration tells us > > that there are more possible cpus and therefore the system prepares for > > the additional cpus to be activated at some later time. > > I guess we should CC x86 maintainers then! Its also a know BIOS problem with Dell f.e. They often indicate more potential cpus even if this particular hw configuration cannot do cpu hotplug. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org