Re: [Xen-users] shared RMRR issue

[jocelyn falempe <jocelyn.falempe@xxxxxxx>]

I reply to myself because I was able to solve it thanks to this post :

https://groups.google.com/forum/#!topic/qubes-users/gS1XTal8XYs

I have to pass all the USB controller sharing the same RMRR to the same domU to make it work.

Adding this to the domU configuration :

'00:14.0,rdm_policy=relaxed',
'00:1a.0,rdm_policy=relaxed',
'00:1d.0,rdm_policy=relaxed',

and I have now this in the logs, but the VM works fine :

(XEN) [VT-D] It's risky to assign 0000:00:14.0 with shared RMRR at bdbe3000 for Dom4.
(XEN) [VT-D] It's risky to assign 0000:00:1a.0 with shared RMRR at bdbe3000 for Dom4.
(XEN) [VT-D] It's risky to assign 0000:00:1d.0 with shared RMRR at bdbe3000 for Dom4.

--

Jocelyn


On 12/05/2017 00:49, jocelyn falempe wrote:

Hi,

I have gaming windows hvm working with xen 4.3. after updating to xen 4.8, I cannot PCI-passthrough my USB controller anymore. The pci passthrough works fine for graphic card and audio.

here is the error I get with rdm_policy=strict :

[VT-D] It's disallowed to assign 0000:00:1d.0 with shared RMRR at bdbe3000 for Dom2.
(XEN) XEN_DOMCTL_assign_device: assign 0000:00:1d.0 to dom2 failed (-1)

with rdm_policy=relaxed, the VM start, but I get a blue screen ...

I've tried the 3 USB controller of my motherboard, and all gave the same error.

how to check why RMRR is shared, and with which device it is shared ?

Thanks in advance,

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