linux-kernel - Re: 2.6.27rc1 cannot boot more than 8CPUs

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Message-ID: <48992D35.9020005@qualcomm.com>
Date:	Tue, 05 Aug 2008 21:48:53 -0700
From:	Max Krasnyansky <maxk@...lcomm.com>
To:	Jeff Chua <jeff.chua.linux@...il.com>
CC:	lkml <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.27rc1 cannot boot more than 8CPUs

Jeff Chua wrote:
> On Wed, Aug 6, 2008 at 11:54 AM, Max Krasnyansky <maxk@...lcomm.com> wrote:
> 
>> Are you running 32-bit kernel ?
> 
> Yes. But, does it matter?

It used to. 64-bit kernel used to handle maxcpus option as documented in the 
Documentation/cpu-hotplug.txt and 32-bit one was broken.
I just looked at the latest code and realized that both are now broken. They 
ignore cpu id > maxcpus instead of not-booting them.

I'll send a patch that fixes that tomorrow.

Max
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