Re: 2.6.27rc1 cannot boot more than 8CPUs

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To: Max Krasnyansky <maxk@...>

Cc: Jeff Chua <jeff.chua.linux@...>, lkml <linux-kernel@...>

Subject: Re: 2.6.27rc1 cannot boot more than 8CPUs

Date: Wednesday, August 6, 2008 - 12:53 am

Max Krasnyansky wrote:
quoted text> Jeff Chua wrote:
>> On Wed, Aug 6, 2008 at 11:54 AM, Max Krasnyansky <maxk@qualcomm.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.
> 

Yes. I have an x86_64 box with 4 cpus, but yesterday when I booted up with maxcpus=2,
I didn't see the other 2 cpus.

quoted text> I'll send a patch that fixes that tomorrow.
> 

greate :)

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Messages in current thread:

2.6.27rc1 cannot boot more than 8CPUs, Jeff Chua, (Tue Aug 5, 11:15 pm)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Linus Torvalds, (Wed Aug 6, 2:01 am)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Jeff Chua, (Wed Aug 6, 2:42 am)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Jeff Chua, (Wed Aug 6, 11:33 am)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Ingo Molnar, (Mon Aug 11, 3:59 pm)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Yinghai Lu, (Mon Aug 11, 4:03 pm)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Ingo Molnar, (Mon Aug 11, 4:08 pm)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Yinghai Lu, (Mon Aug 11, 4:12 pm)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Yinghai Lu, (Mon Aug 11, 4:36 pm)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Ingo Molnar, (Mon Aug 11, 4:44 pm)

Re: 2.6.27rc1 cannot boot more than 8CPUs, David Miller, (Wed Aug 6, 1:19 am)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Jeff Chua, (Wed Aug 6, 2:42 am)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Yinghai Lu, (Wed Aug 6, 4:49 am)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Jeff Chua, (Wed Aug 6, 5:35 am)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Jeff Chua, (Wed Aug 6, 5:42 am)

Re: 2.6.27rc1 cannot boot more than 8CPUs, David Miller, (Wed Aug 6, 3:18 am)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Jeff Chua, (Wed Aug 6, 5:33 am)

Re: 2.6.27rc1 cannot boot more than 8CPUs, David Miller, (Wed Aug 6, 5:36 am)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Jeff Chua, (Wed Aug 6, 5:50 am)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Max Krasnyansky, (Tue Aug 5, 11:31 pm)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Jeff Chua, (Tue Aug 5, 11:50 pm)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Max Krasnyansky, (Tue Aug 5, 11:54 pm)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Jeff Chua, (Wed Aug 6, 12:06 am)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Max Krasnyansky, (Wed Aug 6, 12:48 am)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Li Zefan, (Wed Aug 6, 12:53 am)

Re: 2.6.27rc1 cannot boot more than 8CPUs, Max Krasnyansky, (Wed Aug 6, 4:11 pm)


linux-kernel:
jjohansen	[AppArmor 39/45] AppArmor: Profile loading and manipulation, pathname matching
Vladislav Bolkhovitin	Re: Integration of SCST in the mainstream Linux kernel
Heiko Carstens	Re: -mm merge plans for 2.6.23 -- sys_fallocate
Andrew Morton	2.6.23-rc6-mm1
git:

linux-netdev:
Gerrit Renker	[PATCH 27/37] dccp: Integration of dynamic feature activation - part 2 (server side)
Evgeniy Polyakov	Re: [BUG] New Kernel Bugs
Jarek Poplawski	[PATCH] pkt_sched: Destroy gen estimators under rtnl_lock().
David Miller	[GIT]: Networking
openbsd-misc:

Re: 2.6.27rc1 cannot boot more than 8CPUs

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