Hi Rajesh, I think the error you are seeing is because tlbs are exposed through an mmu unit in gem5 now. I guess changing line 117 in caches.py as in this file ( https://gem5.googlesource.com/public/gem5-resources/+/refs/heads/stable/src/boot-exit/configs/system/caches.py) should work for you.
-Ayaz On Wed, Jun 9, 2021 at 2:04 PM Rajesh Shashi Kumar via gem5-users < gem5-users@gem5.org> wrote: > Thank you for the quick response. > > > - Thank you for confirming that the KVM fix has been integrated into > the stable branch (pointing to gem5-v21.0). At this time, I have not > managed to get PARSEC working in FS mode on the stable branch (v21.0) and I > am debugging the issue described below > - For context, I encountered the following error on gem5-v21.0 while > running PARSEC which made me explore reverting back to v20.1 (and the KVM > patch) as described in the gem5art documentation. I'm using the latest > PARSEC config run scripts from the gem5-resources repository > > <https://gem5.googlesource.com/public/gem5-resources/+/refs/heads/stable/src/parsec/> > > gem5 version 21.0.0.0 > gem5 compiled Jun 10 2021 01:34:21 > gem5 started Jun 10 2021 01:57:17 > gem5 executing on lenovo, pid 20958 > command line: gem5/build/X86/gem5.opt > /home/rajesh/tests/configs/run_parsec.py > /home/rajesh/tests/linux-stable/vmlinux-4.19.83 > /home/rajesh/tests/disk-image/parsec/image/parsec.img kvm streamcluster > simsmall 1 > > Traceback (most recent call last): > File "<string>", line 1, in <module> > File "build/X86/python/m5/main.py", line 455, in main > File "/home/rajesh/tests/configs/run_parsec.py", line 79, in <module> > system = MySystem(kernel, disk, cpu, int(num_cpus)) > File "/home/rajesh/tests/configs/system/system.py", line 78, in __init__ > self.createCacheHierarchy() > File "/home/rajesh/tests/configs/system/system.py", line 158, in > createCacheHierarchy > cpu.mmucache.connectCPU(cpu) > File "/home/rajesh/tests/configs/system/caches.py", line 117, in connectCPU > for tlb in [cpu.itb, cpu.dtb]: > File "build/X86/python/m5/SimObject.py", line 1379, in __getattr__ > AttributeError: object 'X86KvmCPU' has no attribute 'itb' > (C++ object is not yet constructed, so wrapped C++ methods are unavailable.) > > Thank you for your time. > > -- Rajesh Shashi Kumar > > On Thu, Jun 10, 2021 at 12:51 AM Bobby Bruce <bbr...@ucdavis.edu> wrote: > >> The "Fix KVM on Intel platforms" patch is on stable, it was added here: >> https://gem5-review.googlesource.com/c/public/gem5/+/12278 >> >> The other patch your cherry-picking I'm less sure of, but I dont think >> it's a relevant problem anymore from what I can ascertain. >> >> I apologize that the gem5art documentation is using such an old version >> of gem5. Have you managed to get this working with the stable branch >> (version 21.0)? I'm not aware of any reason why it shouldn't work. >> >> -- >> Dr. Bobby R. Bruce >> Room 3050, >> Kemper Hall, UC Davis >> Davis, >> CA, 95616 >> >> web: https://www.bobbybruce.net >> >> >> On Wed, Jun 9, 2021 at 7:06 AM Rajesh Shashi Kumar via gem5-users < >> gem5-users@gem5.org> wrote: >> >>> Hi, >>> >>> I'm attempting to run PARSEC benchmarks in FS mode on gem5-v21.0. I have >>> encountered an issue with KVM on Intel machine. I believe the same was >>> addressed by this patch >>> <https://gem5-review.googlesource.com/c/public/gem5/+/7361> recommended >>> earlier in the mailing list >>> <https://gem5-users.gem5.narkive.com/8DBihuUx/running-fs-py-with-x86kvmcpu-failed> >>> . >>> >>> panic: KVM: Failed to enter virtualized mode (hw reason: 0x80000021) >>> >>> Most of the tutorials on gem5art >>> <http://www.gem5.org/documentation/gem5art/tutorials/boot-tutorial> in >>> gem5 documentation recommend using gem5-v20.1, but I noticed that applying >>> the patch on 20.1 or 21 is not a trivial merge. For the time being, I've >>> been able to use this specific commit tag described in >>> gem5art-experiments <https://github.com/darchr/gem5art-experiments>. >>> >>> git clone https://gem5.googlesource.com/public/gem5cd gem5 >>> git checkout *d40f0bc579fb8b10da7181* >>> git remote add darchr https://github.com/darchr/gem5 >>> git fetch darchr*git cherry-pick >>> 6450aaa7ca9e3040fb9eecf69c51a01884ac370c**git cherry-pick >>> 3403665994b55f664f4edfc9074650aaa7ddcd2c* >>> scons build/X86/gem5.opt -j8 >>> >>> At this point, I have two questions: >>> >>> 1. Is the KVM patch necessary on gem5-v21? >>> 2. In case someone has encountered a similar issue previously, were >>> you able to find a way to merge the patch on newer gem5 releases >>> >>> Thank you for your time. >>> >>> Regards, >>> Rajesh Shashi Kumar >>> _______________________________________________ >>> 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 >> >> _______________________________________________ > 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
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