Hello, it was a bug which got fixed by the following patches, which are merged in develop and will be part of next release
https://gem5-review.googlesource.com/c/public/gem5/+/64072/4 https://gem5-review.googlesource.com/c/public/gem5/+/64073/4 Let me know if it works Kind Regards Giacomo From: Xiongfei Liao (廖雄飛) via gem5-users <gem5-users@gem5.org> Date: Thursday, 3 November 2022 at 11:19 To: gem5-users@gem5.org <gem5-users@gem5.org> Cc: Xiongfei Liao (廖雄飛) <xiongfei.l...@mediatek.com> Subject: [gem5-users] panic: KVM: Failed to set register (0x6030000000100042) value Hi, We try to run a full-system simulation using ARMV8KvmCPU. The simulation cannot get started due to the below failure of setting register PSTATE. ----------------------------------------------------------------------------------------------------------------------------- … … 0: system.kvm_vm: Mapping 8 memory region(s) 0: system.kvm_vm: Mapping region: 0x0xffffaebcb000 -> 0x0 [size: 0x4000000] 0: system.kvm_vm: Mapping region: 0x0xffffbb027000 -> 0x4000000 [size: 0x40000] 0: system.kvm_vm: Mapping region: 0x0xffffacbcb000 -> 0x6000000 [size: 0x2000000] 0: system.kvm_vm: Mapping region: 0x0xffffa8bcb000 -> 0x8000000 [size: 0x4000000] 0: system.kvm_vm: Mapping region: 0x0xffffa4bcb000 -> 0xc000000 [size: 0x4000000] 0: system.kvm_vm: Mapping region: 0x0xffffa2bcb000 -> 0x18000000 [size: 0x2000000] 0: system.kvm_vm: Mapping region: 0x0xffffbc1b4000 -> 0x2e000000 [size: 0x8000] 0: system.kvm_vm: Mapping region: 0x0xffff22bcb000 -> 0x80000000 [size: 0x80000000] build/ARM/cpu/kvm/base.cc:150: info: KVM: Coalesced MMIO disabled by config. 0: system.littleCluster.cpus: MPIDR(EL1) := 0x80000000 build/ARM/dev/arm/energy_ctrl.cc:252: warn: Existing EnergyCtrl, but no enabled DVFSHandler found. build/ARM/sim/simulate.cc:194: info: Entering event queue @ 0. Starting simulation... 0: system.littleCluster.cpus: Attaching cycle counter... 0: system.littleCluster.cpus: In updateKvmState(): 0: system.littleCluster.cpus: PSTATE := 0x3cd build/ARM/cpu/kvm/base.cc:863: panic: KVM: Failed to set register (0x6030000000100042) value (errno: 22) Memory Usage: 2693544 KBytes Program aborted at tick 0 … … ------------------------------------------------------------------------------------------------------------------------------- This register 0x6030000000100042 is legal and 64-bit based on the document at the link: https://www.kernel.org/doc/Documentation/virtual/kvm/api.txt What could be the reason for this? ARM CPU or software or anything else? Any tips/suggestions are appreciated. Thanks in advance. All the best, Xiongfei Liao =================================================== The environment settings are as below. Host: ARM server: Ampere eMag 2019 OS & Kernel: Ubuntu 20.04.5 LTS (GNU/Linux 5.4.0-131-generic aarch64) Simulator: gem5: cloned on Oct 27, 2022 bootloader: gem5 binaries 20220707/binaries/boot.arm64 kernel: gem5 binaries 20220707/binaries/vmlinux.arm64 disk: gem5 binaries ubuntu-18.04-arm64-docker.img ************* MEDIATEK Confidentiality Notice ******************** The information contained in this e-mail message (including any attachments) may be confidential, proprietary, privileged, or otherwise exempt from disclosure under applicable laws. It is intended to be conveyed only to the designated recipient(s). Any use, dissemination, distribution, printing, retaining or copying of this e-mail (including its attachments) by unintended recipient(s) is strictly prohibited and may be unlawful. If you are not an intended recipient of this e-mail, or believe that you have received this e-mail in error, please notify the sender immediately (by replying to this e-mail), delete any and all copies of this e-mail (including any attachments) from your system, and do not disclose the content of this e-mail to any other person. Thank you! IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.
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