[vfio-users] Translation project, info updates needed.

[Alex Williamson]

On Sun, Apr 3, 2016 at 7:12 PM, Blank Field <ihatethisfield at gmail.com>
wrote:

> I've started a (yet)one-man-army translation project with the objective of
> bringing info and knowledge about VFIO to my native language.
> I've partially translated aw's blog post about iommu groups dated back to
> august 2014, and since that time a lot has changed.
>
> For example, the post says that hoprfully Intel will add more ACS to their
> products, and also mentions some exceptions like xeon E3-1200.
> I'd like to know any updates on that field, as i don't remember the
> details and exact models.
> I know that there were some major road blocks in 1XX Intel chipsets like
> high integration between components and stuff.
>

I think if you read through to the latest blog entries, any updates are
available.  There's a post specifically addressing ACS in various Intel
processors which boils down to Xeon E5 or better or a "High End Desktop
Processor", which appears to be a re-branded E5.  I just posted last week
quirks for Skylake PCH root port ACS; turns out Intel did implement ACS on
those root ports, but not to the register offsets defined by the PCIe
spec.  Those quirks will hopefully be coming in the v4.7 kernel.  The
100-series chipset still has the issue that more of the integrated
components are part of multi-function devices without ACS, so some of those
onboard devices are not going to be easily assignable as they have been on
previous chipsets, I don't expect any progress there.  Thanks,

Alex
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