No IOMMU/DMAR with DELL 3020
Roger Pau Monné
roger.pau at citrix.com
Thu Apr 9 08:38:43 UTC 2015
Hello,
El 09/04/15 a les 10.35, Konstantin Belousov ha escrit:
> 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.
Check also if there's any BIOS update from the manufacturer.
Roger.
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