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14 Posts

05-18-2019

US

26 Signins

187 Page Views

  • Posts: 14
  • Registered: ‎05-18-2019
  • Location: US
  • Views: 187
  • Message 1 of 2

A485 bios lacks proper IOMMUV2 Support ?

2019-06-11, 17:42 PM

I'm unable to use amdkfd in linux.

 

During boot it says:

kfd kfd: error required iommu flags ats 0, pri 0, pasid 0

kfd kfd: Error initializing iommuv2

kfd kfd: device 1002:15dd NOT added due to errors

 

iommuv2 is needed for kfd which is needed for opencl support.

Is the feature not enabled in the bios ?

Will this require an updated bios from lenovo ?

 

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102 Posts

12-17-2018

US

285 Signins

1946 Page Views

  • Posts: 102
  • Registered: ‎12-17-2018
  • Location: US
  • Views: 1946
  • Message 2 of 2

Re: A485 bios lacks proper IOMMUV2 Support ?

2019-06-17, 12:10 PM

adding iommu=pt to the linux cmdline will allow the iommu to load correctly and should not have any bad side effects when running ang virtualizations

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