[vfio-users] Installing Catalyst prevents VM from booting.

[Javier Celaya]

But Kash is right. I have a AMD Radeon RX 480 and it works flawlessly with
the Q35 chipset. My PCIe hierarchy:
qemu-kvm ... \
   -M q35
   ...
   -device ioh3420,bus=pcie.0,multifunction=on,port=1,chassis=1,id=root.
   ...
   -device vfio-pci,host=01:00.0,id=hostdev0,bus=root.0,multifunction=on
   -device vfio-pci,host=01:00.1,id=hostdev1,bus=pcie.0

Sorry, I don't remember why the HDMI soundcard (01:00.1) is connected
directly to pcie.0, but it works.

Javi


El vie., 28 dic. 2018 a las 23:52, Brett Foster (<fosterb at edgeandvertex.org>)
escribió:

> Well... that's um... friendly and welcoming piece of feedback.
>
> Surprisingly, I find this technology surprisingly good which is a
> surprisingly good testimonial. Don't mind read interpretation. It is a
> testament.
>
> Anyhow, my apologies for offending Kash's sensibilities.
>
> Brett
>
> Sent from my BlackBerry - the most secure mobile device
>
>   Original Message
> From: kash at tripleback.net
> Sent: December 28, 2018 1:33 PM
> To: vfio-users at redhat.com
> Subject: Re: [vfio-users] Installing Catalyst prevents VM from booting.
>
> Your anecdotal evidence is meaningless, please, don't encourage others
> to use obsolete machine types. Plenty have profiled it and even the
> developers tell you that Q35 is the way to go. "Surprisingly stable" is
> not a sound endorsement of i440fx. If you couldn't make an AMD GPU work,
> that's probably because you didn't create a valid PCIe heirarchy.
>
>
> Kash
>
> On 2018-12-28 1:16 p.m., Brett Foster wrote:
> > I have no issues using PCIe devices or recent-ish processors. Maybe I'm
> missing out on something, but performance is good, stable. Surprisingly
> stable. Can't speak for hot swapping and more fancy configurations, though.
> >
> > But most of all, couldn't get AMD cards to work with Q35... so the
> choice was easy. ;)
>
>
>
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