cirosantilli2
commented
2 years ago Hi, I don't know about that instruction in particular, but the general solution algorithm for missing instruction is that there are three options:
- see if there's some kernel build option or runtime config to avoid running that instruction
- implement a dummy instruction that does nothing and pray it works
- implement the instruction for real
The first step is to find the exact place in the kernel source code that is running the instruction. This will allow you to understand if you can afford to skip it somehow or not, and possibly how. This is possible by logging the instructions, then looking at the address of the blowup, and comparing that with the kernel binary. I forgot exact options, but wasn't hard. You then likely want gdb disas. A helper at:
Hi I hope you are well I ran this command : ./build/X86_VI_hammer_GPU/gem5.opt configs/example/fs.py --kernel=/home/gem5gpu/base/gem5/binaries/vmlinux-5.4.49 --disk-image=/home/gem5gpu/base/gem5/disks/x86root.img and I saw this error: warn: instruction 'fninit' unimplemented stack smashing detected : terminated
Program aborted at cycle 3915499000
Aborted (core dumped)
(also i update m5 path to gem5 directory)
would you please if you know what i should do, tell me I stopped at this step thanks regard twilight