RE: [Xen-users] Xen 3.0.4.1 AMD-V HVM

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

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Christian Horn
> Sent: 07 June 2007 09:14
> To: Tony Hoyle
> Cc: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] Xen 3.0.4.1 AMD-V HVM
> 
> On Wed, Jun 06, 2007 at 08:02:38PM +0100, Tony Hoyle wrote:
> > 
> > Yes.  Some manufacturers actually do this (especially 
> laptops). It's 
> > possible a bios upgrade will reenable the option.
> 
> Are you sure manufaturers can disable this for AM2-boards?
> For intel its well known, but for AMD..

I'll probably be told off for explaining this :-(

Without going into "secrets", yes there is a way to "turn off" AMD-V
with the BIOS, and no, you can't ask for more details unless you have an
NDA with AMD. It's also not possible to "re-enable it". Although the
BIOS _SHOULD_ allow the enabling/disabling to be "user selectable".

Future versions have a more well-documented way to do this. Again,
unless you have an NDA with AMD, please wait until the processors are
available, and there will be more details available to everyone.

--
Mats
> 
> Christian
> 
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> 



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