Dear all,
I am trying to use the checkpoint feature to skip the long and tired Linux
booting part of the ARM FS simulation. However, Gem5 throws the
Segmentation fault when I try to restore the checkpoint. It works fine with
AtomicSimpleCPU, though.
Here is the script I used to take the checkpoint
- run ./m5 checkpoint through the connected terminal
- in the python script, run m5.checkpoint("m5out/cpt.%d") and m5.simulate()
again.
Then I restore the checkpoint by:
m5.instantiate(<checkpoint_dir>)
m5.simulate()
There is no CPU switching. I used DeriveO3CPU
I also tried the fs.py script with --checkpoint-restore option but the
problem persists. Here is the error log:
--- BEGIN LIBC BACKTRACE ---
build/ARM/gem5.opt(_ZN4gem515print_backtraceEv+0x2c)[0x55a2b680abec]
build/ARM/gem5.opt(+0x1c346ef)[0x55a2b68266ef]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x12980)[0x7fa8ee493980]
--- END LIBC BACKTRACE ---
Segmentation fault (core dumped)
I read in one of the older emails that fs.py is outdated. Perhaps dealing
with checkpoint and DerivO3CPU need another way?
Best regards,
Duc Anh
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