what's the different between KVMGT and passthrough intel Integrated Graphics

Question

what's the different between KVMGT and passthrough intel Integrated Graphics

Opened this issue 9 years ago · 11 comments

I want know if we can just passthrough intel Integreated Graphics to VM? because KVMGT not supported for windows guest yet, if just passthrough to VM will be easier?

Answer 1 · 2015-06-01T07:36:18.000Z

We'll work on windows support for KVMGT.

But hey, you can passing through IGD to Windows guest directly.

Answer 2 · 2015-06-01T07:36:57.000Z

What's more, passthroug needs VT-d be present; KVMGT doesn't.

Answer 3 · 2015-06-01T08:03:21.000Z

@jikesong
Does IGD can be passed through? I test VGA passthrough with GTX760, method is : vfio-pci + OVMF, it works fine. But I passthrough IGD of intel, it not work! if I miss something?

Answer 4 · 2015-06-01T08:11:30.000Z

@maqiangddb : technically IGD can be passed through, either by legacy PCI assign, or by VFIO.

Personally I have a legacy pci assign solution on hand, but that's not for release; For VFIO base solutions, as far as I know, Andy Barnes has a solution:

https://www.outsideglobe.com/igdvfio

But I don't try that, not sure how stable it is.

Answer 5 · 2015-06-01T09:19:01.000Z

@jikesong
If windows guest support of KVMGT will coming soon? Does it have an release time? seemingly there is not stable method for IGD passthrough.

Answer 6 · 2015-06-02T02:06:08.000Z

Windows support of kvmgt is supposed to be released by end of Q4 2015, but hey this is only an estimation.

Answer 7 · 2015-06-11T09:18:01.000Z

@jikesong
Can you tell me the detail of legacy pci assign solution of intel IGD? The archlinux blog say intel IGD is not supported YET.

Answer 8 · 2015-06-24T01:44:25.000Z

@maqiangddb: this is only an internal POC and not going to upstream, so sorry I can't share it out.

Answer 9 · 2015-10-29T17:37:12.000Z

Hi Jike
Listened to your video at kvm forum. I want to access Intel IGD (GPU) using on a 3.14.5 kernel based linux guest VM (since Intel media SDK OpenCL driver is based on that). Is KVMGT something worth trying? What is the recommended host OS?
Thanks

Answer 10 · 2015-10-30T00:54:26.000Z

@sjangi : we have released a new KVMGT with new repositories(merged with XenGT), you can find it here:

http://www.spinics.net/lists/kvm/msg122753.html

This 3.14-based repository is obsolete. Please have a try of the new one. If I understand correctly, Intel MediaSDK should work for the new KVMGT.

Answer 11 · 2016-01-27T05:23:27.000Z

Hi,

As I was searching for Intel IGD Passthru reports, I found some people here might find my success in passing the Intel IGD through the QEMU/KVM, interesting and useful. Here's a demo of it : https://www.youtube.com/watch?v=PBN1DmarJ7k.

Cheers,
Raghavan