Hi all, I'm trying to run **_addr** **m5ops**. I need the _addr version because I want to implement a pseudo instruction that works in all gem5 cpu types, including KVM, which only supports _addr pseudo instructions.
If I use this code (https://gem5.googlesource.com/public/gem5-resources/+/refs/tags/v21.1.0.2/src/simple/m5_exit_addr.c) as example: `#include <gem5/m5ops.h>`\ ` #include <m5_mmap.h>`\ ` #include <stdio.h>`\ ` int main(void) {`\ ` #if defined(__aarch64__)`\ ` m5op_addr = 0x10010000;`\ ` #endif`\ ` map_m5_mem();`\ ` m5_exit_addr(0);`\ ` }` I built m5ops following https://www.gem5.org/documentation/general_docs/m5ops/ I compile the test application with: `gcc test.c -o test -L ~/Projects/gem5/util/m5/build/x86/out -lm5 -I ~/Projects/gem5/include -I ~/Projects/gem5/util/m5/src -static` If I run with AtomicSimpleCPU I get `./build/X86/gem5.opt configs/example/se.py -c tests/test-progs/pedro-test/test --cpu-type AtomicSimpleCPU` `**** REAL SIMULATION ****`\ `build/X86/sim/simulate.cc:107: info: Entering event queue @ 0. Starting simulation...`\ `build/X86/sim/mem_state.cc:443: info: Increasing stack size by one page.`\ `build/X86/sim/syscall_emul.cc:73: warn: ignoring syscall mprotect(...)`\ `build/X86/sim/mem_state.cc:443: info: Increasing stack size by one page.`\ `build/X86/sim/mem_state.cc:443: info: Increasing stack size by one page.`\ `Can't open /dev/mem: Permission denied`\ `Exiting @ tick 11031000 because exiting with last active thread context`\ `Simulated exit code not 0! Exit code is 1` If I run with KvmCPU `./build/X86/gem5.opt configs/example/se.py -c tests/test-progs/pedro-test/test --cpu-type X86KvmCPU` \[...\] `build/X86/cpu/kvm/x86_cpu.cc:1556: warn: kvm-x86: MSR (0x491) unsupported by gem5. Skipping.`\ `build/X86/cpu/kvm/x86_cpu.cc:1556: warn: kvm-x86: MSR (0xc0010015) unsupported by gem5. Skipping.`\ `build/X86/cpu/kvm/x86_cpu.cc:1556: warn: kvm-x86: MSR (0x4b564d05) unsupported by gem5. Skipping.`\ `build/X86/cpu/kvm/x86_cpu.cc:450: warn: Illegal SS type: 1`\ `build/X86/cpu/kvm/x86_cpu.cc:491: warn: ss: S flag not set`\ `build/X86/cpu/kvm/x86_cpu.cc:517: warn: ss: P flag not set`\ `build/X86/sim/mem_state.cc:443: info: Increasing stack size by one page.`\ `build/X86/cpu/kvm/x86_cpu.cc:450: warn: Illegal SS type: 1`\ `build/X86/cpu/kvm/x86_cpu.cc:491: warn: ss: S flag not set`\ `build/X86/cpu/kvm/x86_cpu.cc:517: warn: ss: P flag not set`\ `build/X86/cpu/kvm/x86_cpu.cc:450: warn: Illegal SS type: 1`\ `build/X86/cpu/kvm/x86_cpu.cc:491: warn: ss: S flag not set`\ `build/X86/cpu/kvm/x86_cpu.cc:517: warn: ss: P flag not set`\ `build/X86/sim/syscall_emul.cc:73: warn: ignoring syscall mprotect(...)`\ `build/X86/arch/x86/linux/se_workload.cc:162: panic: Page fault at addr 0`\ ` Interrupt handler stack:`\ ` ss: 0x1b`\ ` rsp: 0x7fffffffed18`\ ` rflags: 0x10006`\ ` cs: 0x23`\ ` rip: 0x45ca46`\ ` err_code: 0x4`\ `Memory Usage: 636056 KBytes`\ `Program aborted at tick 441533000`\ `--- BEGIN LIBC BACKTRACE ---`\ `./build/X86/gem5.opt(+0x883420)[0x560e0d238420]`\ `./build/X86/gem5.opt(+0x8a4ade)[0x560e0d259ade]`\ `/lib/x86_64-linux-gnu/libpthread.so.0(+0x143c0)[0x7f7c671cb3c0]`\ `/lib/x86_64-linux-gnu/libc.so.6(gsignal+0xcb)[0x7f7c6637103b]`\ `/lib/x86_64-linux-gnu/libc.so.6(abort+0x12b)[0x7f7c66350859]`\ `./build/X86/gem5.opt(+0x30b5e5)[0x560e0ccc05e5]`\ `./build/X86/gem5.opt(+0xd6109c)[0x560e0d71609c]`\ `./build/X86/gem5.opt(+0xd611db)[0x560e0d7161db]`\ `./build/X86/gem5.opt(+0x913645)[0x560e0d2c8645]`\ `./build/X86/gem5.opt(+0x9827ee)[0x560e0d3377ee]`\ `./build/X86/gem5.opt(+0x983a1a)[0x560e0d338a1a]`\ `./build/X86/gem5.opt(+0x9811c1)[0x560e0d3361c1]`\ `./build/X86/gem5.opt(+0x552ba6)[0x560e0cf07ba6]`\ `./build/X86/gem5.opt(+0x5530ae)[0x560e0cf080ae]`\ `./build/X86/gem5.opt(+0x551b91)[0x560e0cf06b91]`\ `./build/X86/gem5.opt(+0x892796)[0x560e0d247796]`\ `./build/X86/gem5.opt(+0x8c14f4)[0x560e0d2764f4]`\ `./build/X86/gem5.opt(+0x8c1d42)[0x560e0d276d42]`\ `./build/X86/gem5.opt(+0xe1ec92)[0x560e0d7d3c92]`\ `./build/X86/gem5.opt(+0x5bfef1)[0x560e0cf74ef1]`\ `/lib/x86_64-linux-gnu/libpython3.8.so.1.0(+0x2a8738)[0x7f7c67482738]`\ `/lib/x86_64-linux-gnu/libpython3.8.so.1.0(_PyEval_EvalFrameDefault+0x8dd8)[0x7f7c67257f48]`\ `/lib/x86_64-linux-gnu/libpython3.8.so.1.0(_PyEval_EvalCodeWithName+0x8fb)[0x7f7c673a4e3b]`\ `/lib/x86_64-linux-gnu/libpython3.8.so.1.0(_PyFunction_Vectorcall+0x94)[0x7f7c67482114]`\ `/lib/x86_64-linux-gnu/libpython3.8.so.1.0(+0x74d6d)[0x7f7c6724ed6d]`\ `/lib/x86_64-linux-gnu/libpython3.8.so.1.0(_PyEval_EvalFrameDefault+0x7d86)[0x7f7c67256ef6]`\ `/lib/x86_64-linux-gnu/libpython3.8.so.1.0(+0x8006b)[0x7f7c6725a06b]`\ `/lib/x86_64-linux-gnu/libpython3.8.so.1.0(+0x74d6d)[0x7f7c6724ed6d]`\ `/lib/x86_64-linux-gnu/libpython3.8.so.1.0(_PyEval_EvalFrameDefault+0x12fd)[0x7f7c6725046d]`\ `/lib/x86_64-linux-gnu/libpython3.8.so.1.0(_PyEval_EvalCodeWithName+0x8fb)[0x7f7c673a4e3b]`\ `/lib/x86_64-linux-gnu/libpython3.8.so.1.0(_PyFunction_Vectorcall+0x94)[0x7f7c67482114]`\ `/lib/x86_64-linux-gnu/libpython3.8.so.1.0(+0x74d6d)[0x7f7c6724ed6d]`\ `--- END LIBC BACKTRACE ---`\ `Aborted (core dumped)` Any ideas of why am I getting a /dev/mem permission denied with atomic simple cpu and then panic error on KVM? Thank you. Ubuntu 20.04 gem5 version 21.1.0.2
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