[gem5-users] Re: panic: KVM: Failed to set register (0x6030000000100042) value

2022-11-03 Thread 廖雄飛 
Hi Giacomo,

Thanks a lot for your quick response. Your suggestion does help.

With the updates contained in the three files indicated by the two Jira 
tickets, I still saw some error as below. I guess there are some changes not 
included in these two tickets.

--
Global frequency set at 1 ticks per second
info: Simulated platform: VExpress_GEM5_V1
AttributeError: object 'ArmDefaultRelease' has no attribute 'remove'
  (C++ object is not yet constructed, so wrapped C++ methods are unavailable.)

At:
  build/ARM/python/m5/SimObject.py(795): __getattr__
  build/ARM/arch/arm/ArmSystem.py(113): for_kvm
  configs/example/arm/fs_bigLITTLE.py(313): _build_kvm
  configs/example/arm/fs_bigLITTLE.py(287): build
  configs/example/arm/fs_bigLITTLE.py(388): main
  configs/example/arm/fs_bigLITTLE.py(398): 
  build/ARM/python/m5/main.py(434): main

--

However, after I switched to develop branch, the fixes are working and the 
full-system simulation is up. Hopefully, it can run to the login terminal.

Thanks a lot again.

All the best,
Xiongfei

From: Giacomo Travaglini 
mailto:giacomo.travagl...@arm.com>>
Sent: Thursday, November 3, 2022 8:07 PM
To: The gem5 Users mailing list 
mailto:gem5-users@gem5.org>>
Cc: Xiongfei Liao (廖雄飛) 
mailto:xiongfei.l...@mediatek.com>>
Subject: Re: panic: KVM: Failed to set register (0x603000100042) value

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 
mailto:gem5-users@gem5.org>>
Date: Thursday, 3 November 2022 at 11:19
To: gem5-users@gem5.org 
mailto:gem5-users@gem5.org>>
Cc: Xiongfei Liao (廖雄飛) 
mailto:xiongfei.l...@mediatek.com>>
Subject: [gem5-users] panic: KVM: Failed to set register (0x603000100042) 
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: 0x0xaebcb000 -> 0x0 [size: 
0x400]
  0: system.kvm_vm: Mapping region: 0x0xbb027000 -> 0x400 [size: 
0x4]
  0: system.kvm_vm: Mapping region: 0x0xacbcb000 -> 0x600 [size: 
0x200]
  0: system.kvm_vm: Mapping region: 0x0xa8bcb000 -> 0x800 [size: 
0x400]
  0: system.kvm_vm: Mapping region: 0x0xa4bcb000 -> 0xc00 [size: 
0x400]
  0: system.kvm_vm: Mapping region: 0x0xa2bcb000 -> 0x1800 [size: 
0x200]
  0: system.kvm_vm: Mapping region: 0x0xbc1b4000 -> 0x2e00 [size: 
0x8000]
  0: system.kvm_vm: Mapping region: 0x0x22bcb000 -> 0x8000 [size: 
0x8000]
build/ARM/cpu/kvm/base.cc:150: info: KVM: Coalesced MMIO disabled by config.
  0: system.littleCluster.cpus:   MPIDR(EL1) := 0x8000
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 
(0x603000100042) value (errno: 22)
Memory Usage: 2693544 KBytes
Program aborted at tick 0
… …
---

This register 0x603000100042 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

[gem5-users] Re: panic: KVM: Failed to set register (0x6030000000100042) value

2022-11-03 Thread Giacomo Travaglini via gem5-users 
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 
Date: Thursday, 3 November 2022 at 11:19
To: gem5-users@gem5.org 
Cc: Xiongfei Liao (廖雄飛) 
Subject: [gem5-users] panic: KVM: Failed to set register (0x603000100042) 
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: 0x0xaebcb000 -> 0x0 [size: 
0x400]
  0: system.kvm_vm: Mapping region: 0x0xbb027000 -> 0x400 [size: 
0x4]
  0: system.kvm_vm: Mapping region: 0x0xacbcb000 -> 0x600 [size: 
0x200]
  0: system.kvm_vm: Mapping region: 0x0xa8bcb000 -> 0x800 [size: 
0x400]
  0: system.kvm_vm: Mapping region: 0x0xa4bcb000 -> 0xc00 [size: 
0x400]
  0: system.kvm_vm: Mapping region: 0x0xa2bcb000 -> 0x1800 [size: 
0x200]
  0: system.kvm_vm: Mapping region: 0x0xbc1b4000 -> 0x2e00 [size: 
0x8000]
  0: system.kvm_vm: Mapping region: 0x0x22bcb000 -> 0x8000 [size: 
0x8000]
build/ARM/cpu/kvm/base.cc:150: info: KVM: Coalesced MMIO disabled by config.
  0: system.littleCluster.cpus:   MPIDR(EL1) := 0x8000
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 
(0x603000100042) value (errno: 22)
Memory Usage: 2693544 KBytes
Program aborted at tick 0
… …
---

This register 0x603000100042 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


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