I would like to learn more about VT-d (IOMMU) technology, where should I start?

Question

I'm a low-level enthuatist, I love Intel VT-x and recently had some spare time to read and enjoy. I recently got into the term VT-d which allows to create "device realms" per device, and I would like to learn more about it, however when searching in [1] [2] . Didn't Intel publish documentation regarding this technology ? and if so - where ?

I don't want to read Xen src (although this is an option), I would like to read the actual documentation that Intel published regarding this matter.

Perhaps you guys could assist here.

[1] http://download.intel.com/products/processor/manual/252046.pdf [2] http://download.intel.com/products/processor/manual/325462.pdf

Answer 1

You didn't read the right documents. Intel has the VT-d spec here (pdf). If you need to see the code you can find Linux drivers here.