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[Bug 1021594] kfd kfd: error getting iommu info. is the iommu enabled?
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Mon, 30 Jan 2017 10:19:02 +0000
  • Message-id: <>

Joerg Roedel <jroedel@xxxxxxxx> changed:

What |Removed |Added
Flags| |needinfo?(tneo@xxxxxxx)

--- Comment #4 from Joerg Roedel <jroedel@xxxxxxxx> ---
(In reply to tneo tneo from comment #3)
Created attachment 712003 [details]
Complete dmesg output as requested

Joerg as requested, see the attached output file.

Okay, you have a Kaveri bases AMD-APU, which should have an IOMMU. But the BIOS
does not initialize it, as there is no IVRS ACPI-table in your system.

Can you please check whether you BIOS has an IOMMU option and enable it if
present? The error reported here should disappear then.

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