Re: [Xen-users] Xen vmx flag question.

[Periko Support <pheriko.support@xxxxxxxxx>]

On Tue, Sep 7, 2010 at 10:20 AM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:

On Mon, Sep 06, 2010 at 07:48:27AM -0700, Periko Support wrote:
>    On Sat, Sep 4, 2010 at 5:17 AM, Pasi Kärkkäinen <[1]pasik@xxxxxx> wrote:
>
>      On Wed, Sep 01, 2010 at 02:24:11PM -0700, Periko Support wrote:
>      >    Hi.
>      >
>      >    I have a new server and learning Xen. The server runs Centos 5.5
>      Xen
>      >    3.0.3.
>      >
>      >    The machine is a Supermicro 6026T-TF with the MoBo X8DTE/X8DT6 with
>      the
>      >    Intel E5620 which Intel say that support Virtualization.
>      >
>      >    I have enable this feature in my BIOS and other settings about
>      Technology
>      >    and I still cannot see the flag:
>      >
>      >    -Intel Virtualization Tech Enable.
>      >    -Intel VT-d Enable.
>      >
>      >    I don't see the flag vmx went I run cat /proc/cpuinfo
>      >
>      >    If Centos doesn't show this flag it means that Xen cannot run
>      >    Full-Virtuliation Guest OS?
>      >
>      >    Thanks all for your time.
>
>      That's because "/proc/cpuinfo" only shows Xen dom0 Linux info,
>      which is a *VM* !
>
>      Xen *hypervisor* (xen.gz) uses VMX, so dom0 doesn't see it.
>      See "xm info" and check the caps, you should see hvm listed there.
>
>      Also read "xm dmesg" to see the Xen hypervisor boot messages..
>      there you should VMX/HVM getting enabled in the hypervisor.
>      -- Pasi
>
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>      [2]Xen-users@xxxxxxxxxxxxxxxxxxx
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>
>    Hi, thanks all for your comments.
>
>    Now, lets get the info u say running xm dmesg:
>
>  xm  dmesg | grep  VMX
>
>  (XEN) VMX: VPID is available.
>  (XEN) HVM: VMX enabled
>  (XEN) VMX: MSR intercept bitmap enabled
>
>  (XEN) VMX: VPID is available.
>  (XEN) VMX: VPID is available.
>  (XEN) VMX: VPID is available.
>  (XEN) VMX: VPID is available.
>  (XEN) VMX: VPID is available.
>  (XEN) VMX: VPID is available.
>  (XEN) VMX: VPID is available.
>
>
>    xm  dmesg | grep  HVM
>    (XEN) HVM: VMX enabled
>    (XEN) HVM: Hardware Assisted Paging detected and enabled.
>
>    This mean that I have my server ready for HVM?
>

Yes, you have HVM support.

"xm info" will also show it in the caps.

-- Pasi

Is good to know this!!!
Thanks all for your great support!!!

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