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 <a.c.aitchi...@dpmms.cam.ac.uk>
To: Andrey Y. Shevel <she...@bnl.gov>
Cc: scientific-linux-us...@fnal.gov
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
[r...@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'
[r...@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 ?
--
____________________________________________________________________
NAME: Andrey Y. Shevel (Chevel) : EMAIL: andrey.she...@pnpi.spb.ru \
Computing Systems Department : http://hepd.pnpi.spb.ru/CSD |
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