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Date: Thu, 3 Jun 2010 08:34:20 -0500 (CDT) From: Christoph Lameter <cl@...ux-foundation.org> To: Pekka Enberg <penberg@...helsinki.fi> cc: Randy Dunlap <rdunlap@...otime.net>, Giangiacomo Mariotti <gg.mariotti@...il.com>, Bill Davidsen <davidsen@....com>, linux-kernel@...r.kernel.org, linux-mm@...ck.org, x86 maintainers <x86@...nel.org>, Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com> Subject: Re: Possible bug in 2.6.34 slub On Thu, 3 Jun 2010, Pekka Enberg wrote: > On Tue, Jun 1, 2010 at 10:48 PM, Christoph Lameter > <cl@...ux-foundation.org> 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 from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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