hello,everyone!
I follow the steps in https://www.gem5.org/documentation/general_docs/using_kvm/
then  I start the simulation using ./build/X86/gem5.opt 
configs/example/gem5_library/x86-ubuntu-run-with-kvm.py


but  something wrong happen,here is the message :


zjt@Ubuntu20:~/gem5_bak/gem5$ ./build/X86/gem5.opt 
configs/example/gem5_library/x86-ubuntu-run-with-kvm.py
gem5 Simulator System.  https://www.gem5.org
gem5 is copyrighted software; use the --copyright option for details.


gem5 version 22.1.0.0
gem5 compiled May 23 2023 15:52:30
gem5 started May 23 2023 17:07:15
gem5 executing on Ubuntu20, pid 34005
command line: ./build/X86/gem5.opt 
configs/example/gem5_library/x86-ubuntu-run-with-kvm.py


warn: The simulate package is still in a beta state. The gem5 project does not 
guarantee the APIs within this package will remain consistent across upcoming 
releases.
Global frequency set at 1000000000000 ticks per second
build/X86/mem/dram_interface.cc:690: warn: DRAM device capacity (8192 Mbytes) 
does not match the address range assigned (4096 Mbytes)
build/X86/sim/kernel_workload.cc:46: info: kernel located at: 
/home/zjt/.cache/gem5/x86-linux-kernel-5.4.49
build/X86/base/statistics.hh:280: warn: One of the stats is a legacy stat. 
Legacy stat is a stat that does not belong to any statistics::Group. Legacy 
stat is deprecated.
      0: board.pc.south_bridge.cmos.rtc: Real-time clock set to Sun Jan  1 
00:00:00 2012
board.pc.com_1.device: Listening for connections on port 3456
build/X86/dev/intel_8254_timer.cc:128: warn: Reading current count from 
inactive timer.
0: board.remote_gdb: listening for remote gdb on port 7000
build/X86/cpu/kvm/base.cc:150: info: KVM: Coalesced MMIO disabled by config.
build/X86/arch/x86/cpuid.cc:180: warn: x86 cpuid family 0x0000: unimplemented 
function 2
build/X86/arch/x86/cpuid.cc:180: warn: x86 cpuid family 0x0000: unimplemented 
function 3
build/X86/arch/x86/cpuid.cc:180: warn: x86 cpuid family 0x0000: unimplemented 
function 4
build/X86/arch/x86/cpuid.cc:180: warn: x86 cpuid family 0x0000: unimplemented 
function 5
build/X86/arch/x86/cpuid.cc:180: warn: x86 cpuid family 0x0000: unimplemented 
function 6
build/X86/arch/x86/cpuid.cc:180: warn: x86 cpuid family 0x0000: unimplemented 
function 8
build/X86/cpu/kvm/base.cc:150: info: KVM: Coalesced MMIO disabled by config.
build/X86/arch/x86/cpuid.cc:180: warn: x86 cpuid family 0x0000: unimplemented 
function 2
build/X86/arch/x86/cpuid.cc:180: warn: x86 cpuid family 0x0000: unimplemented 
function 3
build/X86/arch/x86/cpuid.cc:180: warn: x86 cpuid family 0x0000: unimplemented 
function 4
build/X86/arch/x86/cpuid.cc:180: warn: x86 cpuid family 0x0000: unimplemented 
function 5
build/X86/arch/x86/cpuid.cc:180: warn: x86 cpuid family 0x0000: unimplemented 
function 6
build/X86/arch/x86/cpuid.cc:180: warn: x86 cpuid family 0x0000: unimplemented 
function 8
build/X86/sim/simulate.cc:192: info: Entering event queue @ 0.  Starting 
simulation...
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x3a) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x48) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xe1) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x309) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x30a) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x30b) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x38d) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x38e) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x38f) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x390) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xc1) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xc2) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xc3) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xc4) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xc5) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xc6) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x186) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x187) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x188) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x189) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x18a) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x18b) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x12) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x11) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4b564d01) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4b564d00) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000000) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000001) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000020) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000021) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000022) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000023) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000100) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000101) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000102) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000103) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000104) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000105) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000003) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000002) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000010) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000080) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x400000b0) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000073) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000106) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000107) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000108) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x400000ff) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x400000f1) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x400000f2) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x400000f3) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x400000f4) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x400000f5) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4b564d02) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4b564d03) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4b564d04) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4b564d06) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4b564d07) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x3b) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x6e0) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x10a) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x345) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x1a0) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4d0) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x9e) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x34) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xce) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x140) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x1fc) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x8b) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x480) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x48d) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x48e) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x48f) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x490) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x485) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x486) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x488) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x48a) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x48b) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x48c) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x491) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xc0010015) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4b564d05) 
unsupported by gem5. Skipping.
build/X86/dev/x86/pc.cc:117: warn: Don't know what interrupt to clear for 
console.
build/X86/arch/x86/kvm/x86_cpu.cc:528: warn: cs limit (0xffffffff) and g (0) 
combination is illegal.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x3a) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x48) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xe1) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x309) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x30a) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x30b) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x38d) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x38e) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x38f) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x390) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xc1) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xc2) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xc3) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xc4) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xc5) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xc6) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x186) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x187) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x188) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x189) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x18a) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x18b) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x12) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x11) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4b564d01) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4b564d00) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000000) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000001) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000020) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000021) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000022) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000023) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000100) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000101) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000102) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000103) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000104) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000105) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000003) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000002) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000010) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000080) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x400000b0) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000073) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000106) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000107) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x40000108) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x400000ff) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x400000f1) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x400000f2) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x400000f3) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x400000f4) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x400000f5) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4b564d02) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4b564d03) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4b564d04) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4b564d06) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4b564d07) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x3b) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x6e0) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x10a) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x345) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x1a0) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4d0) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x9e) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x34) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xce) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x140) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x1fc) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x8b) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x480) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x48d) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x48e) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x48f) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x490) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x485) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x486) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x488) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x48a) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x48b) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x48c) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x491) unsupported 
by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0xc0010015) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:1562: warn: kvm-x86: MSR (0x4b564d05) 
unsupported by gem5. Skipping.
build/X86/arch/x86/kvm/x86_cpu.cc:528: warn: cs limit (0xffffffff) and g (0) 
combination is illegal.
build/X86/arch/x86/kvm/x86_cpu.cc:528: warn: cs limit (0xffffffff) and g (0) 
combination is illegal.
build/X86/arch/x86/interrupts.cc:530: hack: Assuming logical destinations are 1 
<< id.
build/X86/dev/x86/i8042.cc:290: warn: Write to unknown i8042 (keyboard 
controller) command port.
switching cpus
build/X86/sim/simulate.cc:192: info: Entering event queue @ 17149657278565.  
Starting simulation...
build/X86/sim/power_state.cc:105: warn: PowerState: Already in the requested 
power state, request ignored
build/X86/sim/simulate.cc:192: info: Entering event queue @ 17150671995832.  
Starting simulation...
build/X86/mem/ruby/system/Sequencer.cc:613: warn: Replacement policy updates 
recently became the responsibility of SLICC state machines. Make sure to 
setMRU() near callbacks in .sm files!
build/X86/arch/x86/generated/exec-ns.cc.inc:27: warn: instruction 'fwait' 
unimplemented
build/X86/arch/x86/generated/exec-ns.cc.inc:27: warn: instruction 
'palignr_Vdq_Wdq_Ib' unimplemented
build/X86/arch/x86/generated/exec-ns.cc.inc:27: warn: instruction 
'palignr_Vdq_Wdq_Ib' unimplemented
build/X86/arch/x86/generated/exec-ns.cc.inc:27: warn: instruction 
'palignr_Vdq_Wdq_Ib' unimplemented
build/X86/arch/x86/generated/exec-ns.cc.inc:27: warn: instruction 
'palignr_Vdq_Wdq_Ib' unimplemented
build/X86/arch/x86/generated/exec-ns.cc.inc:27: warn: instruction 
'palignr_Vdq_Wdq_Ib' unimplemented
build/X86/arch/x86/generated/exec-ns.cc.inc:27: warn: instruction 
'palignr_Vdq_Wdq_Ib' unimplemented
build/X86/arch/x86/generated/exec-ns.cc.inc:27: warn: instruction 
'palignr_Vdq_Wdq_Ib' unimplemented
build/X86/arch/x86/generated/exec-ns.cc.inc:27: warn: instruction 
'palignr_Vdq_Wdq_Ib' unimplemented
build/X86/arch/x86/generated/exec-ns.cc.inc:27: warn: instruction 
'palignr_Vdq_Wdq_Ib' unimplemented
build/X86/arch/x86/generated/exec-ns.cc.inc:27: warn: instruction 
'palignr_Vdq_Wdq_Ib' unimplemented
warn: User-specified generator for the exit event 'exit' has ended. Using the 
default generator.
build/X86/cpu/kvm/base.cc:572: hack: Pretending totalOps is equivalent to 
totalInsts()
zjt@Ubuntu20:~/gem5_bak/gem5$
it just stop and back to the command line!!


and here is the kernel message:
zjt@Ubuntu20:~/gem5_bak/gem5/util/term$ ./m5term localhost 3456
==== m5 terminal: Terminal 0 ====
Linux version 5.4.49 (aakahlow@amarillo) (gcc version 7.5.0 (Ubuntu 
7.5.0-3ubuntu1~18.04)) #8 SMP Mon Jun 29 14:40:17 PDT 2020
Command line: earlyprintk=ttyS0 console=ttyS0 lpj=7999923 root=/dev/hda1
x86/fpu: x87 FPU will use FXSAVE
BIOS-provided physical RAM map:
BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
BIOS-e820: [mem 0x000000000009fc00-0x00000000000fffff] reserved
BIOS-e820: [mem 0x0000000000100000-0x00000000bfffffff] usable
BIOS-e820: [mem 0x00000000ffff0000-0x00000000ffffffff] reserved
printk: bootconsole [earlyser0] enabled
NX (Execute Disable) protection: active
SMBIOS 2.5 present.
DMI:  , BIOS  06/08/2008
tsc: Fast TSC calibration failed
last_pfn = 0xc0000 max_arch_pfn = 0x400000000
Disabled
x86/PAT: MTRRs disabled, skipping PAT initialization too.
CPU MTRRs all blank - virtualized system.
x86/PAT: Configuration [0-7]: WB  WT  UC- UC  WB  WT  UC- UC  
found SMP MP-table at [mem 0x000f0050-0x000f005f]
ACPI: Early table checksum verification disabled
ACPI: RSDP 0x00000000000F01C0 000024 (v02       )
ACPI: XSDT 0x00000000000F0208 000024 (v01                 00000000      
00000000)
ACPI BIOS Error (bug): Invalid table length 0x24 in RSDT/XSDT 
(20190816/tbutils-291)
Zone ranges:
  DMA      [mem 0x0000000000001000-0x0000000000ffffff]
  DMA32    [mem 0x0000000001000000-0x00000000bfffffff]
  Normal   empty
Movable zone start for each node
Early memory node ranges
  node   0: [mem 0x0000000000001000-0x000000000009efff]
  node   0: [mem 0x0000000000100000-0x00000000bfffffff]
Zeroed struct page in unavailable ranges: 98 pages
Initmem setup node 0 [mem 0x0000000000001000-0x00000000bfffffff]
Intel MultiProcessor Specification v1.4
MPTABLE: OEM ID: 
MPTABLE: Product ID: 
MPTABLE: APIC at: 0xFEE00000
Processor #0 (Bootup-CPU)
Processor #1
IOAPIC[0]: apic_id 2, version 20, address 0xfec00000, GSI 0-23
Processors: 2
smpboot: Allowing 2 CPUs, 0 hotplug CPUs
[mem 0xc0000000-0xfffeffff] available for PCI devices
Booting paravirtualized kernel on bare hardware
clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, 
max_idle_ns: 1910969940391419 ns
setup_percpu: NR_CPUS:8192 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:1
percpu: Embedded 49 pages/cpu s160856 r8192 d31656 u1048576
Built 1 zonelists, mobility grouping on.  Total pages: 775561
Kernel command line: earlyprintk=ttyS0 console=ttyS0 lpj=7999923 root=/dev/hda1
Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes, linear)
Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes, linear)
mem auto-init: stack:off, heap alloc:off, heap free:off
Memory: 3075152K/3145336K available (8195K kernel code, 1281K rwdata, 2088K 
rodata, 1192K init, 1888K bss, 70184K reserved, 0K cma-reserved)
rcu: Hierarchical RCU implementation.
rcu: RCU restricting CPUs from NR_CPUS=8192 to nr_cpu_ids=2.
rcu: RCU calculated value of scheduler-enlistment delay is 100 jiffies.
rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
NR_IRQS: 524544, nr_irqs: 440, preallocated irqs: 16
random: get_random_bytes called from start_kernel+0x304/0x4e6 with crng_init=0
Console: colour dummy device 80x25
printk: console [ttyS0] enabled
printk: console [ttyS0] enabled
printk: bootconsole [earlyser0] disabled
printk: bootconsole [earlyser0] disabled
APIC: Switch to symmetric I/O mode setup
ExtINT not setup in hardware but reported by MP table
..TIMER: vector=0x30 apic1=0 pin1=2 apic2=0 pin2=0
tsc: Unable to calibrate against PIT
tsc: No reference (HPET/PMTIMER) available
tsc: Marking TSC unstable due to could not calculate TSC khz
Calibrating delay loop (skipped) preset value.. 15999.84 BogoMIPS (lpj=7999923)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)
Last level iTLB entries: 4KB 512, 2MB 8, 4MB 4
Last level dTLB entries: 4KB 512, 2MB 8, 4MB 4, 1GB 0
Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer 
sanitization
Spectre V2 : Mitigation: Full AMD retpoline
Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch
Speculative Store Bypass: Vulnerable
Freeing SMP alternatives memory: 12K
smpboot: CPU0: Hygon Fake M5 x86_64 CPU (family: 0xf, model: 0x25, stepping: 
0x1)
Performance Events: Broken PMU hardware detected, using software events only.
Failed to access perfctr msr (MSR c0010007 is 0)
rcu: Hierarchical SRCU implementation.
smp: Bringing up secondary CPUs ...
x86: Booting SMP configuration:
.... node  #0, CPUs:      #1
smp: Brought up 1 node, 2 CPUs
smpboot: Max logical packages: 2
smpboot: Total of 2 processors activated (31999.69 BogoMIPS)
devtmpfs: initialized
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 
1911260446275000 ns
futex hash table entries: 512 (order: 3, 32768 bytes, linear)
NET: Registered protocol family 16
audit: initializing netlink subsys (disabled)
audit: type=2000 audit(1325376000.293:1): state=initialized audit_enabled=0 
res=1
cpuidle: using governor ladder
PCI: Using configuration type 1 for base access
unchecked MSR access error: RDMSR from 0x1b0 at rIP: 0xffffffff81022534 
(native_read_msr.constprop.3+0x6/0x32)
Call Trace:
 ? intel_epb_restore+0x7a/0x7a
 intel_epb_restore+0xf/0x7a
 intel_epb_online+0xe/0x2a
 cpuhp_invoke_callback+0xbc/0x232
 ? smpboot_register_percpu_thread+0xc6/0xc6
 cpuhp_thread_fun+0xa0/0xd2
 smpboot_thread_fn+0x135/0x14a
 kthread+0xf0/0xf5
 ? kthread_destroy_worker+0x39/0x39
 ret_from_fork+0x22/0x40
ENERGY_PERF_BIAS: Set to 'normal', was 'performance'
unchecked MSR access error: WRMSR to 0x1b0 (tried to write 0x0000000000000006) 
at rIP: 0xffffffff810225bd (intel_epb_restore+0x5d/0x7a)
Call Trace:
 intel_epb_online+0xe/0x2a
 cpuhp_invoke_callback+0xbc/0x232
 ? smpboot_register_percpu_thread+0xc6/0xc6
 cpuhp_thread_fun+0xa0/0xd2
 smpboot_thread_fn+0x135/0x14a
 kthread+0xf0/0xf5
 ? kthread_destroy_worker+0x39/0x39
 ret_from_fork+0x22/0x40
HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
ACPI: Interpreter disabled.
vgaarb: loaded
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
pps_core: LinuxPPS API ver. 1 registered
pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti 
<giome...@linux.it>
PTP clock support registered
PCI: Probing PCI hardware
PCI host bridge to bus 0000:00
pci_bus 0000:00: root bus resource [io  0x0000-0xffff]
pci_bus 0000:00: root bus resource [mem 0x00000000-0xffffffffffff]
pci_bus 0000:00: No busn resource found for root bus, will use [bus 00-ff]
pci 0000:00:04.0: [8086:7111] type 00 class 0x010180
pci 0000:00:04.0: reg 0x20: [io  0x0000-0x000f]
pci 0000:00:04.0: reg 0x30: [mem 0x00000000-0x000007ff pref]
pci 0000:00:04.0: legacy IDE quirk: reg 0x10: [io  0x01f0-0x01f7]
pci 0000:00:04.0: legacy IDE quirk: reg 0x14: [io  0x03f6]
pci 0000:00:04.0: legacy IDE quirk: reg 0x18: [io  0x0170-0x0177]
pci 0000:00:04.0: legacy IDE quirk: reg 0x1c: [io  0x0376]
pci_bus 0000:00: busn_res: [bus 00-ff] end is updated to 00
clocksource: Switched to clocksource refined-jiffies
VFS: Disk quotas dquot_6.6.0
VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
pnp: PnP ACPI: disabled
thermal_sys: Registered thermal governor 'step_wise'
thermal_sys: Registered thermal governor 'user_space'
pci 0000:00:04.0: BAR 6: assigned [mem 0xc0000000-0xc00007ff pref]
pci 0000:00:04.0: BAR 4: assigned [io  0x1000-0x100f]
pci_bus 0000:00: resource 4 [io  0x0000-0xffff]
pci_bus 0000:00: resource 5 [mem 0x00000000-0xffffffffffff]
NET: Registered protocol family 2
tcp_listen_portaddr_hash hash table entries: 2048 (order: 3, 32768 bytes, 
linear)
TCP established hash table entries: 32768 (order: 6, 262144 bytes, linear)
TCP bind hash table entries: 32768 (order: 7, 524288 bytes, linear)
TCP: Hash tables configured (established 32768 bind 32768)
UDP hash table entries: 2048 (order: 4, 65536 bytes, linear)
UDP-Lite hash table entries: 2048 (order: 4, 65536 bytes, linear)
NET: Registered protocol family 1
PCI: CLS 0 bytes, default 64
platform rtc_cmos: registered platform RTC device (no PNP device found)
workingset: timestamp_bits=62 max_order=20 bucket_order=0
fuse: init (API version 7.31)
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
io scheduler mq-deadline registered
io scheduler kyber registered
acpiphp_ibm: ibm_acpiphp_init: acpi_walk_namespace failed
Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled
serial8250: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 8250
Linux agpgart interface v0.103
brd: module loaded
loop: module loaded
Uniform Multi-Platform E-IDE driver
piix 0000:00:04.0: IDE controller (0x8086:0x7111 rev 0x00)
pci 0000:00:04.0: enabling device (0000 -> 0001)
pci 0000:00:04.0: PCI->APIC IRQ transform: INT A -> IRQ 16
piix 0000:00:04.0: not 100% native mode: will probe irqs later
legacy IDE will be removed in 2021, please switch to libata
Report any missing HW support to linux-...@vger.kernel.org
    ide0: BM-DMA at 0x1000-0x1007
    ide1: BM-DMA at 0x1008-0x100f
hda: M5 IDE Disk, ATA DISK drive
hda: UDMA/33 mode selected
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
ide_generic: please use "probe_mask=0x3f" module parameter for probing all 
legacy ISA IDE ports
ide-gd driver 1.18
hda: max request size: 128KiB
hda: 4194304 sectors (2147 MB), CHS=4161/16/63
 hda: hda1
ide-cd driver 5.00
Loading iSCSI transport class v2.0-870.
e1000: Intel(R) PRO/1000 Network Driver - version 7.3.21-k8-NAPI
e1000: Copyright (c) 1999-2006 Intel Corporation.
e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k
e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
igb: Intel(R) Gigabit Ethernet Network Driver - version 5.6.0-k
igb: Copyright (c) 2007-2014 Intel Corporation.
igbvf: Intel(R) Gigabit Virtual Function Network Driver - version 2.4.0-k
igbvf: Copyright (c) 2009 - 2012 Intel Corporation.
ixgbe: Intel(R) 10 Gigabit PCI Express Network Driver - version 5.1.0-k
ixgbe: Copyright (c) 1999-2016 Intel Corporation.
ixgbevf: Intel(R) 10 Gigabit PCI Express Virtual Function Network Driver - 
version 4.1.0-k
ixgbevf: Copyright (c) 2009 - 2018 Intel Corporation.
ixgb: Intel(R) PRO/10GbE Network Driver - version 1.0.135-k2-NAPI
ixgb: Copyright (c) 1999-2008 Intel Corporation.
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci-pci: EHCI PCI platform driver
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
ohci-pci: OHCI PCI platform driver
uhci_hcd: USB Universal Host Controller Interface driver
i8042: PNP: No PS/2 controller found.
i8042: Probing ports directly.
serio: i8042 KBD port at 0x60,0x64 irq 1
serio: i8042 AUX port at 0x60,0x64 irq 12
mousedev: PS/2 mouse device common for all mice
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
NET: Registered protocol family 17
IPI shorthand broadcast: enabled
Unstable clock detected, switching default tracing clock to "global"
If you want to keep using the local clock, then add:
  "trace_clock=local"
on the kernel command line
input: AT Translated Set 2 keyboard as 
/devices/platform/i8042/serio0/input/input0
EXT4-fs (hda1): mounted filesystem with ordered data mode. Opts: (null)
VFS: Mounted root (ext4 filesystem) on device 3:1.
devtmpfs: mounted
Freeing unused kernel image memory: 1192K
Write protecting the kernel read-only data: 14336k
Freeing unused kernel image memory: 2028K
Freeing unused kernel image memory: 2008K
rodata_test: all tests were successful
Run /sbin/init as init process
random: fast init done
systemd[1]: System time before build time, advancing clock.
systemd[1]: systemd 237 running in system mode. (+PAM +AUDIT +SELINUX +IMA 
+APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 
+SECCOMP +BLKID +ELFUTILS +KMOD -IDN2 +IDN -PCRE2 default-hierarchy=hybrid)
systemd[1]: Detected architecture x86-64.


Welcome to Ubuntu 18.04.2 LTS!


systemd[1]: Set hostname to <gem5-host>.
systemd[1]: File /lib/systemd/system/systemd-journald.service:36 configures an 
IP firewall (IPAddressDeny=any), but the local system does not support 
BPF/cgroup based firewalling.
systemd[1]: Proceeding WITHOUT firewalling in effect! (This warning is only 
shown for the first loaded unit using IP firewalling.)
random: systemd: uninitialized urandom read (16 bytes read)
systemd[1]: Created slice User and Session Slice.
[  OK  ] Created slice User and Session Slice.
random: systemd: uninitialized urandom read (16 bytes read)
systemd[1]: Created slice System Slice.
[  OK  ] Created slice System Slice.
random: systemd: uninitialized urandom read (16 bytes read)
systemd[1]: Listening on udev Control Socket.
[  OK  ] Listening on udev Control Socket.
systemd[1]: Listening on fsck to fsckd communication Socket.
[  OK  ] Listening on fsck to fsckd communication Socket.
systemd[1]: Created slice system-serial\x2dgetty.slice.
[  OK  ] Created slice system-serial\x2dgetty.slice.
[  OK  ] Listening on Journal Socket (/dev/log).
[  OK  ] Listening on /dev/initctl Compatibility Named Pipe.
[  OK  ] Listening on udev Kernel Socket.
[  OK  ] Listening on Syslog Socket.
[  OK  ] Started Forward Password Requests to Wall Directory Watch.
[  OK  ] Reached target User and Group Name Lookups.
[  OK  ] Reached target Slices.
[  OK  ] Listening on Journal Audit Socket.
[  OK  ] Listening on Journal Socket.
[  OK  ] Started Read required files in advance.
         Mounting Huge Pages File System...
         Starting Uncomplicated firewall...
         Starting Load Kernel Modules...
         Starting udev Coldplug all Devices...
         Starting Set the console keyboard layout...
         Starting Remount Root and Kernel FiEXT4-fs (hda1): re-mounted. Opts: 
errors=remount-ro
le Systems...
         Mounting POSIX Message Queue File System...
         Starting Journal Service...
         Mounting Kernel Debug File System...
         Starting Create Static Device Nodes in /dev...
[  OK  ] Reached target Remote File Systems.
[  OK  ] Started Journal Service.
[  OK  ] Mounted Huge Pages File System.
[  OK  ] Started Uncomplicated firewall.
[  OK  ] Started Load Kernel Modules.
[  OK  ] Started Set the console keyboard layout.
[  OK  ] Started Remount Root and Kernel File Systems.
[  OK  ] Mounted POSIX Message Queue File System.
[  OK  ] Mounted Kernel Debug File System.
[  OK  ] Started Create Static Device Nodes in /dev.
[  OK  ] Started udev Coldplug all Devices.
         Starting Load/Save Random Seed...
         Starting udev Kernel Device Manager...
         Activating swap /swapfile...
[ Adding 95100k swap on /swapfile.  Priority:-2 extents:1 across:95100k 
 OK  ] Reached target Local File Systems (Pre).
[  OK  ] Reached target Local File Systems.
         Starting Set console font and keymap...
         Starting Tell Plymouth To Write Out Runtime Data...
         Mounting Kernel Configuration File System...
         Mounting FUSE Control File System...
         Starting Apply Kernel Variables...
         Starting Flush Journal to Persistent Storage...
[  OK  ] Activated swap /swapfile.
[  OK  ] Started udev Kernel Device Manager.
[  OK  ] Started Load/Save Random Seed.
[  OK  ] Started Set console font and keymap.
[  OK  ] Started Tell Plymouth To Write Out Runtime Data.
[  OK  ] Mounted Kernel Configuration File System.
[  OK  ] Mounted FUSE Control File System.
[  OK  ] Started Apply Kernel Variables.
[  OK  ] Found device /dev/ttyS0.
[  OK  ] Started Flush Journal to Persistent Storage.
         Starting Create Volatile Files and Directories...
[  OK  ] Started Dispatch Password Requests to Console Directory Watch.
[  OK  ] Reached target Local Encrypted Volumes.
[  OK  ] Reached target Paths.
         Starting Network Service...
[  OK  ] Reached target Swap.
[  OK  ] Started Network Service.
[  OK  ] Started Create Volatile Files and Directories.
         Starting Network Time Synchronization...
         Starting Update UTMP about System Boot/Shutdown...
         Starting Network Name Resolution...
[  OK  ] Started Network Time Synchronization.
[  OK  ] Started Network Name Resolution.
[  OK  ] Reached target Network.
[  OK  ] Reached target Host and Network Name Lookups.
[  OK  ] Reached target System Time Synchronized.
[  OK  ] Started Update UTMP about System Boot/Shutdown.
[  OK  ] Reached target System Initialization.
[  OK  ] Started Message of the Day.
[  OK  ] Started Discard unused blocks once a week.
[  OK  ] Listening on D-Bus System Message Bus Socket.
[  OK  ] Started Daily apt download activities.
[  OK  ] Started Daily apt upgrade and clean activities.
[  OK  ] Started Daily Cleanup of Temporary Directories.
[  OK  ] Reached target Timers.
[  OK  ] Listening on UUID daemon activation socket.
[  OK  ] Reached target Sockets.
[  OK  ] Reached target Basic System.
[  OK  ] Started irqbalance daemon.
         Starting System Logging Service...
         Starting Permit User Sessions...
         Starting Login Service...
         Starting Dispatcher daemon for systemd-networkd...
         Starting LSB: Record successful boot for GRUB...
         Starting Accounts Service...
[  OK  ] Started D-Bus System Message Bus.
[  OK  ] Started Login Service.
         Starting OpenBSD Secure Shell server...
[  OK  ] Started Set the CPU Frequency Scaling governor.
[  OK  ] Started Regular background program processing daemon.
[  OK  ] Started System Logging Service.
[  OK  ] Started Dispatcher daemon for systemd-networkd.
[  OK  ] Started Permit User Sessions.
[  OK  ] Started Accounts Service.
[  OK  ] Started OpenBSD Secure Shell server.
[  OK  ] Started LSB: Record successful boot for GRUB.
         Starting Terminate Plymouth Boot Screen...
         Starting Hold until boot process finishes up...
[  OK  ] Started Terminate Plymouth Boot Screen.
[  OK  ] Started Hold until boot process finishes up.
[  OK  ] Started Serial Getty on ttyS0.
         Starting Set console scheme...
[  OK  ] Started Set console scheme.
[  OK  ] Created slice system-getty.slice.
[  OK  ] Started Getty on tty1.
[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
[  OK  ] Started Stop ureadahead data collection 45s after completed startup.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.


Ubuntu 18.04.2 LTS gem5-host ttyS0


gem5-host login: root (automatic login)


Welcome to Ubuntu 18.04.2 LTS (GNU/Linux 5.4.49 x86_64)


 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage




The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.


Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.


Starting gem5 init... reading run script file.
Running m5 script from /tmp/script
This is running on Timing CPU cores.
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