[vfio-users] Ryzen/X370 Chipset and IOMMU Groups

[Friedrich Oslage]

Well, it finally happened: ASUS added ACS support in the BIOS.
Don't know if they did if because of the ticket or because they felt it
was the right thing to do but with BIOS version 1403 my Crosshair VI
Hero doesn't require the ACS patch anymore.
The 'ACS Enable' option is located under Advanced/AMD CVS/NBIO Common
Options and is enabled by default.The IOMMU groups are identical to the
once I got with pcie_acs_override=downstream.
Cheers,Friedrich
On Mon, 2017-03-13 at 08:19 +0000, Marien Spek wrote:
> Good luck with that.
> I had a similar problem back in the ASUS Crosshair V Formula days and
> ASUS just refused to address the problem... They just replied "we
> don't support linux" period.
> Gigiabyte on the other hand kept sending me new bioses for my GA-
> 990FX-UD3 until the problem was fixed.
> 
> 
> 
> From that day on no ASUS anymore for me if I have a say in it...
> 
> 
> 
> Similar thing with their X79 boards and IB-E cpu's concerning Intel
> VT-d...
> Only the very high-end/workstation boards got a fix... The rest could
> suck it...
> 
> 
> 
> Bottom-line I'd trade an ASUS board for a Gigabyte one anytime.
> 
> 
> 
> Hopefully ASUS did change over the years, but I highly doubt it.
> Keep us posted though because I'm very interested if anything at ASUS
> has changed.
> 
> 
> 
> Kind regards,
> Marien
> 
> 
> 
> 
> 
> 
> Van: vfio-users-bounces at redhat.com <vfio-users-bounces at redhat.com>
> namens Nick Sarnie <commendsarnex at gmail.com>
> 
> Verzonden: vrijdag 10 maart 2017 19:53
> 
> Aan: Alex Williamson
> 
> CC: vfio-users
> 
> Onderwerp: Re: [vfio-users] Ryzen/X370 Chipset and IOMMU Groups
>  
> 
> 
> 
> 
> 
> Yeah, that is unfortunate.
> 
> 
> 
> 
> Thanks for helping with this issue. I've sent a ticket to Asus, but
> I'm not expecting much. Then again, I felt the same way and Gigabyte
> actually sent me a fixed bios, so who knows.
> 
> 
> 
> 
> I'll keep you updated.
> 
> 
> 
> 
> 
> Thanks again,
> 
> 
> Sarnex
> 
> 
> 
> 
> 
> On Fri, Mar 10, 2017 at 1:37 PM, Alex Williamson 
> <alex.l.williamson at gmail.com> wrote:
> 
> > 
> > On Fri, Mar 10, 2017 at 11:05 AM, Nick Sarnie
> > <commendsarnex at gmail.com> wrote:
> > 
> > > 
> > > 
> > > 
> > > Hi Alex,
> > > 
> > > 
> > > 
> > > 
> > > I don't see either of the options. I couldn't find Common Options
> > > at all, and here's a screenshot of the CBS settings:
> > > 
> > > 
> > > 
> > > https://i.imgur.com/9hQUHX0.jpg
> > > 
> > > 
> > > 
> > > 
> > > Is this something I should ask Asus to add?
> > > 
> > > 
> > > 
> > > 
> > > 
> > 
> > 
> > 
> > 
> > I suppose it wouldn't hurt to try to start the discussion with
> > Asus.  The video I found was this one:
> > 
> > 
> > 
> > https://youtu.be/pipR5xhrLo0?t=20
> > 
> > 
> > 
> > 
> > 
> > At that start time you can see an NBIO Common Options menu on an
> > ASRock system, but I never saw him open it and I couldn't find any
> > documentation on what might be in there in an asrock mb manual (not
> > an endorsement for asrock, perhaps they just have a
> >  BIOS more similar to the AMD sample implementation).  If AMD put
> > it into a menu of debug options, it's really no surprise that
> > consumer firmware dropped it.  Too bad.  This feels like a repeat
> > of the difficulty we had trying to find motherboards that allowed
> >  the IOMMU to be enabled when AMD-Vi came out.  I wonder if AVIC
> > requires yet another BIOS option that consumers will need to gamble
> > with.
> > 
> > 
> > 
> > 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
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