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[Xen-devel] [PATCH v3 0/4] Fix grant map/unmap with auto-translated guests

This series adds proper IOMMU entries when mapping foreign memory 
(either grants or foreign pages) inside of auto-translated guests 
when the p2m is not shared between HAP and IOMMUs, and disables p2m 
sharing when running on AMD hardware.

In order for the guest to know if it's safe to use grant mapped pages 
for IO with hardware devices a new xen feature is introduced in the 
last patch.

Thanks for the review, Roger.

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