[CentOS-virt] xen kernel showing only one processor on SMP

[Hristo Benev]

 >Date: Sun, 18 May 2008 08:42:16 -0700
 >From: gen2 <gen2 at planetofidiots.com>
 >Subject: Re: [CentOS-virt] xen kernel showing only one processor on
 >	SMP
 >To: Discussion about the virtualization on CentOS
 >	<centos-virt at centos.org>
 >Message-ID: <48304E58.10103 at planetofidiots.com>
 >Content-Type: text/plain; charset=windows-1251; format=flowed
 >
 >Hristo Benev wrote:
 >> What if you boot with other kernel?
 >> 
 >> If you have the same result maybe BIOS update is required for your server?!
 >
 >Hi thanks for the response
 >BIOS is updated and current, if I boot to gentoo liveCD, I see the 
 >expected 4 processors. This server has indeed shown TWO processors using 
 >centOS xen-kernel before, but now after some time and upgrades I notice 
 >there is only one (again!).
 >
 >Is it as simple as BIOS in every case, or is there some other path to 
 >discovering the problem I can try? (I have done many many hours of forum 
 >searches and googling on this issue) Thank you
 >
 >
 >------------------------------
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 >CentOS-virt at centos.org
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 >
 >End of CentOS-virt Digest, Vol 9, Issue 10
 >******************************************
 >

The kernel does not support your ACPI BIOS (most probably).

You may try to disable ACPI or better fill bug report in CentOS bugtracker.

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