Hi Andrew,

I would pay attention that in both described cases XEN kernels were used.

Andrey


On Wed, 16 Jun 2010, Dr Andrew C Aitchison wrote:

> Date: Wed, 16 Jun 2010 10:58:44 +0100 (BST)
> From: Dr Andrew C Aitchison <[log in to unmask]>
> To: Andrey Y. Shevel <[log in to unmask]>
> Cc: [log in to unmask]
> Subject: Re: Q on the CPU flag 'vmx'
> 
> On Wed, 16 Jun 2010, Andrey Y. Shevel wrote:
>
>>  Hello everybody,
>>
>>  I just discovered in my CPU
>>
>>  model name      : Intel(R) Xeon(R) CPU           E5430  @ 2.66GHz
>>
>>  under
>>
>>  [root@pcfarm-new ~]# uname -a
>>  Linux pcfarm-new.pnpi.spb.ru 2.6.18-194.3.1.el5xen #1 SMP Fri May 7
>>  02:05:32 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
>>
>>  that there is no flag 'vmx'
>>
>>  [root@pcfarm-new ~]# grep vmx /proc/cpuinfo; echo $?
>>  1
>>
>>  At the same time when I boot another kernel 'xen.gz-2.6.18-128.1.1.el5'
>>  the flag 'vmx' is in place
>
> Hmm. The flags are indeed different with xen and non-xen kernels.
>
> I guess this is because with a xen kernel you are looking at the capabiities 
> of the *virtual* CPU, rather than the bare metal processor ?
>
>

-- 
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