Hi all, I'm trying to boot Linux (from https://www.gem5.org/documentation/general_docs/fullsystem/guest_binaries) with multiple cores and KVM. The target ISA is aarch64, so I am running gem5 on an aarch64 host machine, with KVM support. I'm trying with the latest stable gem5 version (v21.0.0.0) and the latest images from guest binaries.
I'm using the fs.py script, and the boot works if I run it with only one CPU: ``` ./build/ARM/gem5.opt configs/example/fs.py --kernel $M5_PATH/binaries/vmlinux.arm64 --disk-image /scratch/pedro/ubuntu-18.04-arm64-docker.img --cpu-type ArmV8KvmCPU --mem-size 8GB --script configs/boot/my_test_script.rcS --num-cpus 1 ``` But if I run with `--num-cpus 2` (or 4 or 8), the terminal gets stuck at: ``` warn: Returning zero for read from miscreg pmevtyper2_el0 warn: Returning zero for read from miscreg pmevtyper3_el0 warn: Returning zero for read from miscreg pmevtyper4_el0 warn: Returning zero for read from miscreg pmevtyper5_el0 warn: Returning zero for read from miscreg pmccfiltr_el0 ``` With only one CPU the terminal rapidly progresses after that part: ``` warn: Returning zero for read from miscreg pmevtyper1_el0 warn: Returning zero for read from miscreg pmevtyper2_el0 warn: Returning zero for read from miscreg pmevtyper3_el0 warn: Returning zero for read from miscreg pmevtyper4_el0 warn: Returning zero for read from miscreg pmevtyper5_el0 warn: Returning zero for read from miscreg pmccfiltr_el0 warn: SCReg: Access to unknown device dcc0:site0:pos0:fn7:dev0 warn: Tried to read RealView I/O at offset 0x60 that doesn't exist warn: Tried to read RealView I/O at offset 0x48 that doesn't exist warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist warn: Tried to write RVIO at offset 0xa8 (data 0) that doesn't exist warn: Tried to read RealView I/O at offset 0x8 that doesn't exist warn: Tried to read RealView I/O at offset 0x48 that doesn't exist warn: EnergyCtrl: Disabled handler, ignoring read from reg 0 ``` And I can attach the terminal and see things are ok. So questions: Is KVM with multiple cores supported by gem5? I thought so by looking here http://www.gem5.org/documentation/benchmark_status/gem5-20 If it is, should I give any additional flags or perform additional steps in order to run KVM with multiple cores? Thank you in advance for any suggestions, Pedro. _______________________________________________ gem5-users mailing list -- gem5-users@gem5.org To unsubscribe send an email to gem5-users-le...@gem5.org %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s
