Hello! Thank you for your response. I'm a beginner in both programming and gem5
as well, so progress might be a bit slow. I apologize for my delayed replies.
I've also been trying different versions of gem5 in the past few days, but the
results haven't been very promising. Currently, I'm working with version 22.1.0.
After adding breakpoints at the asterisk-marked locations, the debugging
information is as follows:
BaseKvmCPU::setOneReg(uint64_t id, const void *addr)
{
#ifdef KVM_SET_ONE_REG
struct kvm_one_reg reg;
reg.id = id;
reg.addr = (uint64_t)addr;
if (ioctl(KVM_SET_ONE_REG, ®) == -1) {
* panic("KVM: Failed to set register (0x%x) value (errno: %i)\n",
id, errno);
}
#else
panic("KVM_SET_ONE_REG is unsupported on this platform.\n");
#endif
}
Reg：{
id: 6931039826524241986
addr: 281461478855616
}
id:<optimized out>
addr: 0xfffcdb7713c0
Here is my information. Please let me know if you need more. Thank you!
Also, I wanted to ask, what is the earliest version of gem5 that supports KVM?
I heard that KVM is not supported in version 20.0.3, but I feel like that might
be incorrect.
-----原始邮件-----
发件人:"Giacomo Travaglini via gem5-users" <gem5-users@gem5.org>
发送时间:2023-08-16 17:44:51 (星期三)
收件人: "The gem5 Users mailing list" <gem5-users@gem5.org>
抄送: "何雨彬" <bjutheyu...@emails.bjut.edu.cn>, "Giacomo Travaglini"
<giacomo.travagl...@arm.com>
主题: [gem5-users] Re: boot arm with kvm
Hello, it would help if you could run it with gdb, place a breakpoint in
BaseKVMCPU::setOneReg and tell us which register gem5 is trying to set
Kind Regards
Giacomo
From: 何雨彬 via gem5-users <gem5-users@gem5.org>
Date: Tuesday, 15 August 2023 at 07:00
To: gem5 <gem5-users@gem5.org>
Cc: 何雨彬 <bjutheyu...@emails.bjut.edu.cn>
Subject: [gem5-users] boot arm with kvm
hello！
i am using gem5's KVM to accelerate my simulation, but in version 22.0, I
encountered the following issue:
**** REAL SIMULATION ****
build/ARM/cpu/kvm/base.cc:150: info: KVM: Coalesced MMIO disabled by config.
build/ARM/dev/arm/energy_ctrl.cc:252: warn: Existing EnergyCtrl, but no enabled
DVFSHandler found.
build/ARM/sim/simulate.cc:192: info: Entering event queue @ 0. Starting
simulation...
build/ARM/cpu/kvm/base.cc:863: panic: KVM: Failed to set register
(0x6030000000100042) value (errno: 22)
I found a similar error in the email list before, but after checking the
patches, I realized that the patches were all there but the issue still wasn't
resolved.
After that, I switched the gem5 version to 20.1.0.5, but after running it, the
gem5's output remained stuck, and there was no output in m5term.
Here is my command line:
sudo ./build/ARM/gem5.opt ./configs/example/fs.py
--disk=/home/lyq/gem5/benchmark/itecgo/itecgo/expand-aarch64-ubuntu-trusty-headless.img
--kernel=/home/lyq/gem5/benchmark/itecgo/itecgo/vmlinux.euler --mem-size=12GB
--bootloader=/home/lyq/gem5/benchmark/itecgo/boot.arm64
--script=/home/lyq/gem5/benchmark/RCS/403.gcc.rcS --caches
--cpu-type=ArmV8KvmCPU
Is there anything I should check? I can provide more information if needed.
Thank you for any help!
mike
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