[gem5-users] Porting a configuration file from gem5 v20 to gem5 v21

[Ali Ghandour via gem5-users]

I have a config file that is working properly using gem5 v20.

I spent a lot of time trying to run it using the latest version of gem5.

In SE mode, it gives a segmentation fault.

I tried to debug it using GDB and GEF.
The fault is triggered in


#1  0x0000555555dc2969 in gem5::o3::CPU::trap (this=0x55555b7ca000,
fault=std::shared_ptr<gem5::FaultBase> (use count 2, weak count 0) = {...},
tid=0x0, inst=...) at build/ARM/cpu/o3/cpu.cc:905
905    fault->invoke(threadContexts[tid], inst);


In FS mode, it gives the following error:
  File "build/ARM/python/m5/SimObject.py", line 1416, in __getattr__
AttributeError: object 'ARM_A72_Cluster' has no attribute 'l2'
  (C++ object is not yet constructed, so wrapped C++ methods are
unavailable.)





*My question:Is there a systematic approach thatI can follow to get the
config file working using the latest version of gem5?*

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