I am attempting on ubuntu 14.04 to configure PCI passthrough of a NVidia
K40 GPU card that is plugged into a HP DL580 rack mounted server.
I have done all of the pre-work I normally have done in the past with
pci-stub, vfio and etc but when I try an execute a qemu-system-x86_64
command that works on a similar version of debian, I get the following
error in the dmesg:
Device is ineligible for IOMMU domain attach due to platform RMRR
requirement. Contact your platform vendor.
I have read through the patch description from Alex at:
http://lists.linuxfoundation.org/pipermail/iommu/2014-June/008816.html
and I have read the IOMMU documentation at:
https://www.kernel.org/doc/Documentation/Intel-IOMMU.txt
but I am still not really understanding if or what the fix is for this.
The ubuntu 14.04 system where I am getting this error is running
3.16.0-30-generic
The debian system where I can do similar PCI passthrough of a NVidia K2
GPU device is running a 3.14.29-4 kernel.
Can anyone provide any insight into an fix or workaround for this?
Thanks in advance.
--
Steven DuChene
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