No IOMMU/DMAR with DELL 3020

[Slawa Olhovchenkov]

On Thu, Apr 09, 2015 at 11:35:12AM +0300, Konstantin Belousov wrote:

> On Thu, Apr 09, 2015 at 10:28:10AM +0200, Gustau P?rez wrote:
> >    Yup, sorry for the error. I checked the micro in the ark and it has vt-d:
> > 
> >               http://goo.gl/CZZRHz
> It only indicates that the CPU/northbridge has the hardware, but BIOS must
> do a work to configure it and to inform the OS about the configuration.
> Your BIOS did not.
>  
> > 
> >    in the bios, there's only one option to enable virtualization
> > support, which is ticked.
> > 
> >    The complete log is here:
> > 
> >              http://dpaste.com/28FDMJQ
> > 
> Dmesg would not give you any useful information there. A DMAR table
> is either present, or is it not. In the later case, OS cannot use the
> hardware, and if no option in BIOS is present, your only choice is to
> complain to the machine/BIOS vendor.

May be some OS utilites can do same work?
This is theoretically capable?