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From: Andi Kleen <ak@suse.de>
To: William Lee Irwin III <wli@holomorphy.com>
Cc: Adrian Bunk <bunk@stusta.de>,
	discuss@x86-64.org, linux-kernel@vger.kernel.org
Subject: Re: x86_64: up to 255 or 256 CPUs?
Date: Tue, 20 Feb 2007 10:35:38 +0100	[thread overview]
Message-ID: <200702201035.38874.ak@suse.de> (raw)
In-Reply-To: <20070220004218.GO21484@holomorphy.com>

On Tuesday 20 February 2007 01:42, William Lee Irwin III wrote:
> On Tue, Feb 20, 2007 at 01:06:47AM +0100, Adrian Bunk wrote:
> > Quoting arch/x86_64/Kconfig:
> > <--  snip  -->
> > ...
> > config NR_CPUS
> >         int "Maximum number of CPUs (2-256)"
> >         range 2 255
> > ...
> > <--  snip  -->
> > cu
> > Adrian
> 
> The broadcast APIC ID clashes with the 256th cpu.

Yes 255 is theory. But we don't know if it actually works anyways because
it has been never tested.

-Andi

  reply	other threads:[~2007-02-20  9:41 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-20  0:06 x86_64: up to 255 or 256 CPUs? Adrian Bunk
2007-02-20  0:42 ` William Lee Irwin III
2007-02-20  9:35   ` Andi Kleen [this message]
  -- strict thread matches above, loose matches on Subject: below --
2007-01-11  7:01 Adrian Bunk

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