iommu disabled by default, kernel complains?

Discussion in 'UDOO BOLT' started by rdslw, May 16, 2020.

  1. rdslw

    rdslw UDOOer

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    Udoo bolt default BIOS settings has IOMMU disabled.

    Because of that, linux kernel complains upon boot:
    [ 2.190274] kfd kfd: Allocated 3969056 bytes on gart
    [ 2.191331] kfd kfd: error getting iommu info. is the iommu enabled?
    [ 2.191339] kfd kfd: Error initializing iommuv2
    [ 2.191556] kfd kfd: device 1002:15dd NOT added due to errors

    Any ideas about enabling iommu without kernel hanging?
     
    rdslw, May 16, 2020
    #1
  2. rdslw

    rdslw UDOOer

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    Replying to myself. With kernel 5.8.x you can safely enable IOMMU in udoo bolt firmware. No more errors, and 5.8.x does not hang up.
     
    rdslw, Sep 6, 2020
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