Re: [Xen-users] VT-x not found..

[Jonathan Tripathy <jonnyt@xxxxxxxxxxx>]

Jonathan Tripathy
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On 31/05/10 20:45, Bart Coninckx wrote:
> On Monday 31 May 2010 21:42:20 Jonathan Tripathy wrote:
>    
> > On 31/05/10 20:42, Bart Coninckx wrote:
> >      
> > > On Monday 31 May 2010 20:24:15 Jonathan Tripathy wrote:
> > >        
> > > > On 31/05/10 19:11, Rudi Ahlers wrote:
> > > >          
> > > > > On Mon, May 31, 2010 at 8:00 PM, Jonathan Tripathy<jonnyt@xxxxxxxxxxx
> > > > > <mailto:jonnyt@xxxxxxxxxxx>>   wrote:
> > > > >
> > > > >       Hi Everyone,
> > > > >
> > > > >       I upgraded my CentOS 5.5 to Xen 3.4.2 using this guide:
> > > > >
> > > > > http://www.syntaxtechnology.com/2010/01/upgrade-xen-3-0-on-centos-5-4-x
> > > > > 86 _64-to-xen-3-4-2/
> > > > >
> > > > >       Now, using the new kernel that it gave me, the system doesn't seem
> > > > >       to be able to detect vt-x..
> > > > >
> > > > >       In virt-manager, Local Install Media and Network Boot are greyed
> > > > > out..
> > > > >
> > > > >       Any ideas?
> > > > >
> > > > >       Thanks
> > > > >
> > > > >       _______________________________________________
> > > > >       Xen-users mailing list
> > > > >
> > > > > Xen-users@xxxxxxxxxxxxxxxxxxx<mailto:Xen-users@xxxxxxxxxxxxxxxxxxx>
> > > > > http://lists.xensource.com/xen-users
> > > > >
> > > > >
> > > > > Doe your CPU acrtually support vt-x?
> > > > >
> > > > >
> > > > > Website: http://www.SoftDux.com
> > > > > Technical Blog: http://Blog.SoftDux.com
> > > > > Office: 087 805 9573
> > > > > Cell: 082 554 7532
> > > > >            
> > > > Yes it does. It worked fine with the orignal version of Xen that came
> > > > with CentOS 5.5. It's a brand new server opened today from Dell which
> > > > support Vt-x and Vt-d. Virtualisation technology is enabled in the BIOS
> > > >          
> > > You have the vmx flag in /proc/cpuinfo?
> > > I suppose you had the VT extension enabled before the migration but
> > > suppose you fiddled with it, power down your host (like shutdown and pull
> > > the plug) and power it up again. I experienced this being necessary once
> > > because simple rebooting after getting out of the BIOS did NOT enable VT
> > > for real.
> > >
> > > B.
> > >        
> > Nope, I don't have that flag in cpuinfo, but I can't understand why....
> > Is it possible that the kernel upgrade can disable this somehow??
> >
> > It's really confusing me
> >
> >      
> I personally think not. Do the power recycle thing and check again. If you're
> sure it's on in the BIOS. Ow yes, which reminds me, I once had a BIOS where it
> needed to be enabled on two different spots - I think it was a HP machine.
>    
Power cycling made no different. I had the plug out for about 2 or 3 
minutes.
This is really starting to worry me why the vmx flag isn't showing...

I never checked for the vmx flag in the vanilla install, but since I was 
able to create an HVM guest, I image it would have been there?
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