RE: [Xen-users] Does my platform support VT? (dell 1855/Xeon/linux)

["Petersson, Mats" <Mats.Petersson@xxxxxxx>]

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Tiago Cruz
> Sent: 17 October 2006 19:00
> To: Sadique Puthen
> Cc: octane indice; xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] Does my platform support VT? (dell 
> 1855/Xeon/linux)
> 
> Hello,
> 
> On Tue, 2006-10-17 at 20:55 +0530, Sadique Puthen wrote:
> > > I've installed Xen3.0.2-2 on my platform: Dell 1855 and Xeon CPU.
> > > So, How can I enabled the VT on these CPU?
> 
> Asking for Dell guys, I got:
> 
> "The only Dell servers that currently support VT in the BIOS are the
> PE6800 and PE6850."
> 
> Note: PE is PowerEdge, my PE2850 doesn't work too.
> 
> http://forums.us.dell.com/supportforums/board/message?board.id
> =pes_bios&message.id=3287
> 
> So, you can't use guest OS with 64 bits, but you will be able to run
> guest OS with 32 bits (is it correct? :)

Ability to run 64-bit OS has nothing to do with VT/AMD-V. 

To find out if you have 64-bit capability, you need to look for "lm" ->
long mode [which you have in the capabilities of your processor]. 

However, if you want to mix running Xen-guests at 32-bit and 64-bit OS,
then you will need to run HVM (AMD-V/Intel VT) to achieve that, at least
at the moment. However, 32-bit apps work just fine on the 64-bit OS
[with a very small number of exceptions - I have so far not found a
single one that I needed to run, but I've read about apps that don't
work]. 

--
Mats
> 
> -- 
> Tiago Cruz <tiagocruz@xxxxxxxxx>
> 
> 
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