[Skiboot] What is "NPU6 Found LPARSHORT = ..."

Oliver O'Halloran oohall at gmail.com
Wed Apr 15 13:28:32 AEST 2020

On Wed, Apr 15, 2020 at 1:01 PM Hong Bo Peng <penghb at cn.ibm.com> wrote:
> Hello
> I am running a stress test on a P9 DD2.1 machine with V100 GPU cards. I found there are some messages in /sys/firmware/opal/msglog. What does these msg stand for? Are they hints of some kind of problem?
> [445217.407812726,7] NPU6: Found LPARSHORT = 0x0 for BDF = 0x400
> [445217.408315717,7] NPU6: Found LPARSHORT = 0x2 for BDF = 0x600
> [445217.408812085,7] NPU6: Found LPARSHORT = 0x1 for BDF = 0x500
> There are 6 GPU cards on the node. But I only ran test on the first 3 GPU cards.
> I found this seems to be reported by Skiboot. So I asked in this mailing list. If this is not the right place, please also help to tell me the right place or person to get help from. Thank you.

Appears to be some debug prints from hw/npu2.c:npu2_init_context()
relating to the MMU context used when translating host (virtual)
addresses for the GPUs. Nothing to worry about.

> Best Regards!
> Peng HongBo
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