1. Please describe the problem: Coresight backtraces when booting ThunderX2 2. What is the Version-Release number of the kernel: Seeing this in Rawhide and F33 3. Did it work previously in Fedora? If so, what kernel version did the issue *first* appear? Old kernels are available for download at https://koji.fedoraproject.org/koji/packageinfo?packageID=8 : 5.10.0-98.fc33 4. Can you reproduce this issue? If so, please provide the steps to reproduce the issue below: Boot on ThunderX2 5. Does this problem occur with the latest Rawhide kernel? To install the Rawhide kernel, run ``sudo dnf install fedora-repos-rawhide`` followed by ``sudo dnf update --enablerepo=rawhide kernel``: Yes. 6. Are you running any modules that not shipped with directly Fedora's kernel?: No. 7. Please attach the kernel logs. You can get the complete kernel log for a boot with ``journalctl --no-hostname -k > dmesg.txt``. If the issue occurred on a previous boot, use the journalctl ``-b`` flag.
Created attachment 1749451 [details] dmesg.txt
Per Suzuki Poulose: The bindings clearly show that the funnel descriptions are messed up. For e.g, _SB.NOD1.CP00.THD0.ETM0 _SB.NOD1.CP08.THD0.ETM0 _SB.NOD1.CP08.THD1.ETM0 _SB.NOD1.CP08.THD2.ETM0 _SB.NOD1.CP08.THD3.ETM0 _SB_.NOD1.CP09.THD1.ETM0 They all "connect" to port 0 of the _SB.NOD1.FUN0. But if you look at the Node for NOD1.FUN0, it lists _SB.NOD1.CP00.THD0.ETM0 as the other end. It looks like a copy-paste error and has forgot to update the FUN for each of the items.
I guess i need to validate this for F35, I have a TX2 quirk in a MR somewhere that I can't locate at the moment and it doesn't appear to have been merged.
Created attachment 1837079 [details] Slightly stale TX2/A70 firmware coresight workaround This is an unmerged patch which disables foresight on A70 machines since the firmware is buggy.
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