* Michael Ellerman [off-list ref] [2023-05-22 17:41:22]:

Srikar Dronamraju [off-list ref] writes:

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* Alexey Kardashevskiy [off-list ref] [2023-04-13 22:09:22]:

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On 23.03.23 10:53, Srikar Dronamraju wrote:

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Hi Alexey, Michael

Sorry for the late reply, but I didnt have access to this large system.
This weekend, I did get access and tested with the patch. However it didn't
help much, system is still stuck at dracut with similar message except the
trace.

However this patch
https://lore.kernel.org/all/20230418204401.13168-1-gbatra@linux.vnet.ibm.com/ (local)
from Gaurav Batra does solve this issue.

Thanks.

There was a v3 of that patch:
  https://lore.kernel.org/all/20230504175913.83844-1-gbatra@linux.vnet.ibm.com/ (local)

Which is merged now into mainline as:
  096339ab84f3 ("powerpc/iommu: DMA address offset is incorrectly calculated with 2MB TCEs")

Presumably it also fixes the bug for you, so I'll mark this as fixed,
but if you can test that exact commit that would be good to confirm the
bug is fixed in mainline.

Yes verified with mainline kernel and also with the v3.
This patch/commit does fix it.

-- 
Thanks and Regards
Srikar Dronamraju