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[vfio-users] Problem with enable interrupt remapping



Hi everyone,

I am having a problem when enable interrupt remapping. The dmesg in kernel 4.x said:

[Firmware Bug]: ioapic 8 has no mapping iommu, interrupt remapping will be disabled

With kernel 3.x, there is no message but when start VM with vfio passthrough, it will still fail.

DMAR table extract with acpica tools
http://fpaste.org/281006/45263338/

Best regards
Long

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