VT-d2 support inside Linux kernel

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Hi,

Is there any information I can find about VT-d2 support inside Linux
kernel? It was marked as WIP on KVM todo list. In current top of tree,
I am seeing some ats support for intel-iommu. Does that mean the ATS
part is already finished?

> git log -p -1 93a23a72
commit 93a23a7271dfb811b3adb72779054c3a24433112
Author: Yu Zhao <yu.zhao@xxxxxxxxx>
Date:   Mon May 18 13:51:37 2009 +0800

    VT-d: support the device IOTLB

    Enable the device IOTLB (i.e. ATS) for both the bare metal and KVM
    environments.

    Signed-off-by: Yu Zhao <yu.zhao@xxxxxxxxx>
    Signed-off-by: David Woodhouse <David.Woodhouse@xxxxxxxxx>

Thanks,
CJ
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