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[Xen-devel] [PATCH 00 of 14 V3] amd iommu: support ATS device passthru on IOMMUv2 systems

Hi all, this is patch v3.
ATS devices with PRI and PASID capabilities can communicate with iommuv2 to 
perform two level (nested) address translation and demand paging for DMA. 
To passthru such devices, iommu driver has to been enabled in guest OS. 
This patch set adds initial iommu emulation for hvm guests to support ATS 
device passthru.

changes in v3:
* Use xenstore to receive guest iommu configuration instead of adding in a new 
field in hvm_info_table.
* Support pci segment in vbdf to mbdf bind.
* Make hypercalls visible for non-x86 platforms.
* A few code cleanups according to comments from Jan and Ian.

Changes in v2:
* Do not use linked list to access guest iommu tables.
* Do not parse iommu parameter in libxl_device_model_info again.
* Fix incorrect logical calculation in patch 11.
* Fix hypercall definition for non-x86 systems.


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