Hi,
I am trying to perform an IGD passthrough on an X201 thinkpad tablet
running ubuntu Yakkety 16.10.
I have enabled Vt-d in the BIOS and it appears to be enabled properly,
however when I startup a windows 7 guest with the legacy igd
passthrough enabled, nothing appears on the laptop LCD screen and I
see the following fault in dmesg:
[84894.707617] DMAR: DRHD: handling fault status reg 3
[84894.709116] DMAR: [DMA Write] Request device [00:02.0] fault addr
be000000 [fault reason 02] Present bit in context entry is clear
[84894.745722] DMAR: DRHD: handling fault status reg 3
[84894.747215] DMAR: [DMA Write] Request device [00:02.0] fault addr
be000000 [fault reason 05] PTE Write access is not set
I have the following kernel command line options:
intel_iommu=on nomodeset video=vesafb:off,efifb:off modprobe.blacklist=i915
I am running KVM/Qemu version 2.6.1+dfsg-0ubuntu5.1 and my xml
hostdev statements are the following:
<hostdev mode='subsystem' type='pci' managed='no'>
<driver name='vfio'/>
<source>
<address domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</source>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02'
function='0x0'/>
</hostdev>
I would love to be able to get the igd passthrough working on this
machine. I am not sure if it is impossible because of some kind of
BIOS bug or whatever, but any guidance would be greatly appreciated.
Thanks, Bill
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