[coreboot] VT-d support

[Himanshu Chauhan]

> On 05-Jun-2017, at 10:02 PM, Zaolin <zaolin at das-labor.org> wrote:
> 
> You are asking for VT-d support. You are talking about Intel platforms ?

Yes. I am talking about intel platforms. All CPUs that have VT-d support need support from motherboards as well. So any setup with VT-d enabled CPU and a motherboards that assists it, is what I am talking about.

> 
> But for which specific platform you are asking for ? There are so many..
> 
> 
> Am 05.06.2017 um 10:24 schrieb Himanshu Chauhan:
>> 
>>> On 05-Jun-2017, at 9:41 PM, ron minnich <rminnich at gmail.com> wrote:
>>> 
>>> 
>>> 
>>> On Mon, Jun 5, 2017 at 9:00 AM Himanshu Chauhan <hschauhan at nulltrace.org> wrote:
>>> Hi,
>>> 
>>> VT-d requires support from BIOS. Does coreboot support VT-d?
>>> 
>>> 
>>> 
>>> what support does it need?  
>> BIOS adds DMAR and other entries in the ACPI table. I am not quite sure how these entries are formed exactly though.
>> 
>> https://www.mjmwired.net/kernel/Documentation/Intel-IOMMU.txt
>> 
>> http://www.intel.com/content/dam/www/public/us/en/documents/product-specifications/vt-directed-io-spec.pdf
>> 
>> Is anybody working on this?
>> 
>> Regards
>> Himanshu
>> 
>> 
>> 
>> 
> 
> 
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