Re: [Xen-users] VT option is on but 'VMX enabled' is not displayed in xm dmesg

[dongkyu lee <dongq.lee@xxxxxxxxx>]

Thank you for your interesting.

 

Are the servers identical?

Yes, the servers are identical. (HP DL360G6)

 

Do they have different CPU models?/Do they have the same BIOS/firmware versions?
cat /proc/cpuinfo

 

All devices/BIOS/firware versions included CPU must be same because they are all same model.

I checked all of them to confirm. They are identical.  

 

What version of Xen are you using? What version of dom0 kernel?

dom0 kernel : 2.6.18-164.6.1.el5xen (on CentOS 5.3)

Xen version : 3.4.1

In case xen_caps in 'xm info' shows hvm-3.0-xxx options, I think it demonstrates that

it is VT enabled processor and VT is also enabled.

I am wondering if it is possible that xm info shows hvm options but xm dmesg does not display VMX info or

something wrong with xen or VT configuration.

 

Thank you so much in advance

 

2010/4/12 Pasi Kärkkäinen <pasik@xxxxxx>

On Mon, Apr 12, 2010 at 07:21:24PM +0900, dongkyu lee wrote:
>    We have 35 xen-installed servers and enabled VT to use HVM. Five of these
>    servers do not show
>    any messages about vmx when 'xm dmesg | grep vmx' is entered but other
>    thirty servers shows message correctly like below:
>
>    (XEN) VMX: Supported advanced features:
>    (XEN) VMX: EPT is available.
>    (XEN) VMX: VPID is available.
>    (XEN) HVM: VMX enabled
>

Are the servers identical?

Do they have different CPU models?
cat /proc/cpuinfo

Do they have the same BIOS/firmware versions?

>    Even if five servers do not display 'vmx enabled' messages, 'xm info'
>    command shows that
>    xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p
>    hvm-3.0-x86
_64>
>    I have tried to create HVM serveral times on these servers and they worked
>    perfectly.
>
>    Finally, everything is fine but no 'VMX enabled' message even if VT is
>    enabled.
>    Any comments/hints would be greatly appreciated. Thank you.

What version of Xen are you using? What version of dom0 kernel?

-- Pasi

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