I see. I suggest you to run gem5.debug with gdb and set up a breakpoint in the Hypervisor Trap constructor. This will tell you what is triggering the fault.
Should be relatively easy to fix Kind Regards Giacomo From: Thomas, Samuel <samuel_tho...@brown.edu> Date: Wednesday, 3 August 2022 at 15:07 To: The gem5 Users mailing list <gem5-users@gem5.org> Subject: [gem5-users] Re: gem5 Linux Version 4.18 Hi Giacomo, Here is the ArmRelease: [system.release] type=ArmRelease eventq_index=0 extensions=LPAE VIRTUALIZATION SECURITY FEAT_LSE FEAT_PAN FEAT_HPDS FEAT_VMID16 FEAT_RDM FEAT_UAO FEAT_LVA FEAT_LPA FEAT_SVE FEAT_FCMA FEAT_JSCVT FEAT_PAuth FEAT_SEL2 And yes, when running with the Faults debug flag enabled we see that there is a hypervisor trap thrown: ``` Global frequency set at 1000000000000 ticks per second gem5 Simulator System. https://www.gem5.org gem5 is copyrighted software; use the --copyright option for details. gem5 version 22.0.0.2 gem5 compiled Aug 2 2022 14:54:21 gem5 started Aug 3 2022 09:53:57 gem5 executing on <my machine>, pid <pid> command line: /path/to/gem5-workspace/gem5v22/gem5/build/ARM/gem5.opt --debug-flags=Faults -d /path/to/gem5-workspace/gem5v22/gem5/results/benchmark /path/to/gem5-workspace/gem5v22/gem5/configs/example/fs.py --disk-image /path/to/gem5-workspace/gem5v22/gem5/dist/disks/ubuntu.img --kernel /path/to/gem5-workspace/gem5v22/gem5/dist/binaries/vmlinux-4.14.arm64 --ruby --caches --l2cache --l1d_size=32kB --l2_size=256kB --cpu-type AtomicSimpleCPU --mem-size 8GB --script=/path/to/gem5-workspace/gem5v22/gem5/bootscripts/benchmark.rcS --checkpoint-at-end **** REAL SIMULATION **** 227203000: Hypervisor Trap: Invoking Fault (AArch64 target EL):Hypervisor Trap cpsr:0x3c9 PC:0xffffff80089a4cb4 elr:0xffffff80089a4cb4 newVec: 0x8008b400 inst: 0xd50320ff 227208000: Hypervisor Trap: Invoking Fault (AArch64 target EL):Hypervisor Trap cpsr:0x600003c9 PC:0xffffff80089a4cb4 elr:0xffffff80089a4cb4 newVec: 0x8008b400 inst: 0xd50320ff 227213000: Hypervisor Trap: Invoking Fault (AArch64 target EL):Hypervisor Trap cpsr:0x600003c9 PC:0xffffff80089a4cb4 elr:0xffffff80089a4cb4 newVec: 0x8008b400 inst: 0xd50320ff 227218000: Hypervisor Trap: Invoking Fault (AArch64 target EL):Hypervisor Trap cpsr:0x600003c9 PC:0xffffff80089a4cb4 elr:0xffffff80089a4cb4 newVec: 0x8008b400 inst: 0xd50320ff ... (repeats many thousands of times every 5000 ticks) ``` I can run with Exec as well if it is helpful, but there are hundreds of thousands of lines of output and I feel bad for whichever server out there that has to store that output. Again, thank you for your help! Best, Sam On Wed, Aug 3, 2022 at 8:00 AM Giacomo Travaglini <giacomo.travagl...@arm.com> wrote: > > > On 8/3/22 10:21, Giacomo Travaglini wrote: > > Hi Sam, > > > > If nothing gets printed, I am wondering whether you are encountering an > exception while booting. > > Would you mind running with –debug-flags=Exec,Faults and see what is going on? > > > > Exec = print the instruction trace > > Fault = print the exception trace > > > *Faults > > > > > (To check the ArmRelease you are using, have a look at system.release in > config.ini > > The entry will contain a list of architectural extensions) > > > > Giacomo > > > > From: Thomas, Samuel <samuel_tho...@brown.edu> > Date: Wednesday, 3 August 2022 at 00:17 > To: The gem5 Users mailing list <gem5-users@gem5.org> > Subject: [gem5-users] Re: gem5 Linux Version 4.18 > > Hi Giacomo, > > There is no output. We are also using a pristine v22.0.0.2 and let the > simulator run for ~1 day and there is no output. > > I'm not sure what you mean by which ArmRelease we are using -- > however, our run script is as follows: > > ``` > #!/bin/sh > > export CURR_DIR=$(pwd) > export M5_PATH=$CURR_DIR/dist > # export KERNEL_PATH=$M5_PATH/binaries/vmlinux.arm64 # out of box from > gem5 guest binaries -- boots and runs (~10 minutes) > export KERNEL_PATH=$M5_PATH/binaries/vmlinux-4.14.arm64 # compiled > locally -- (no output for ~1 day) > export DISK_PATH=$M5_PATH/disks/ubuntu.img > export SCRIPT_PATH=$CURR_DIR/bootscripts/$1.rcS > > rm -r $CURR_DIR/results/$1/ > > $CURR_DIR/build/ARM/gem5.opt -d $CURR_DIR/results/$1 > $CURR_DIR/configs/example/fs.py \ > --disk-image $DISK_PATH --kernel $KERNEL_PATH --ruby \ > --caches --l2cache --l1d_size=32kB --l2_size=256kB --cpu-type > AtomicSimpleCPU --mem-size 8GB \ > --script=$SCRIPT_PATH --checkpoint-at-end > > $CURR_DIR/build/ARM/gem5.opt -d $CURR_DIR/results/$1 > $CURR_DIR/configs/example/fs.py \ > --disk-image $DISK_PATH --kernel $KERNEL_PATH --ruby \ > --caches --l2cache --l1d_size=32kB --l2_size=256kB --cpu-type > DerivO3CPU --mem-size 8GB \ > --script=$SCRIPT_PATH --checkpoint-restore=1 --maxinsts 500000000 > ``` > > Should we be specifying the ARM specific CPU models as opposed to the > basic ones? > > Again, thank you for your help! > > Best, > Sam > > > On Tue, Aug 2, 2022 at 5:20 PM Giacomo Travaglini > <giacomo.travagl...@arm.com> wrote: > > > > Hi Sam, > > > > > > > > I have to say I successfully managed to boot Linux 4.14 with a pristine > > v22.0.0.2. > > > > What’s the content of m5out/system.terminal? Also, could you provide me the > > ArmRelease you are using? This should be a list of enabled Armv8.X > > extensions. > > > > > > > > Kind Regards > > > > > > > > Giacomo > > > > > > > > From: Thomas, Samuel <samuel_tho...@brown.edu> > > Date: Tuesday, 2 August 2022 at 14:57 > > To: The gem5 Users mailing list <gem5-users@gem5.org> > > Subject: [gem5-users] Re: gem5 Linux Version 4.18 > > > > Hi Giacomo, > > > > > > > > Thank you for your reply. Yes, I am using v22.0.0.2, and I have ensured > > that the recompiled bootloader binaries are in the M5_PATH. > > > > > > > > If that issue is resolved, then perhaps this shows that there is a similar > > issue that isn't necessarily a FEAT_PAuth problem, but has a similar > > output. What can I do to verify if FEAT_PAuth is enabled? If not, what else > > should I do to isolate the issue? > > > > > > > > Again, thank you for your help! > > > > > > > > Best, > > > > Sam > > > > > > > > On Tue, Aug 2, 2022 at 4:54 AM Giacomo Travaglini > > <giacomo.travagl...@arm.com> wrote: > > > > Hi Sam, > > > > > > > > 1. Are you using v22.0.0.2 or simply v22.0.0.0? (The FEAT_PAuth > > problem has been resolved in v22.0.0.2 so it is not really an open issue) > > > > 2. If using the v22.0.0.2, could you make sure you rebuild the > > bootloader and make M5_PATH point to it? > > > > Let me know if this works > > > > > > > > Kind Regards > > > > > > > > Giacomo > > > > > > > > From: Thomas, Samuel <samuel_tho...@brown.edu> > > Date: Monday, 1 August 2022 at 22:16 > > To: gem5 users mailing list <gem5-users@gem5.org> > > Subject: [gem5-users] gem5 Linux Version 4.18 > > > > Hi all, > > > > > > > > We recently upgraded our gem5 project to be compatible with gem5 version > > 22, and are working with a modified version of Linux. We had been working > > from kernel version 4.14 (following the instructions from > > https://www.gem5.org/documentation/general_docs/fullsystem/building_arm_kernel). > > > > > > > > When we use this kernel version with the most recent changes to gem5, the > > simulator cannot fully boot, and it seems as though this might be due to > > the "FEAT_PAuth" being utilized (cited as an open issue in the v22.0.0.2 > > release notes). When we use the out of the box Linux kernel binary that > > comes with the guest binaries (from > > https://www.gem5.org/documentation/general_docs/fullsystem/guest_binaries), > > the simulator works well and the system boots. > > > > > > > > Is the source for the Linux version 4.18 that comes with the guest binaries > > available? Are there any patches that we can apply to the Linux v4.18 > > commit? > > > > > > > > Thank you in advance for your help! > > > > > > > > Best, > > > > Sam > > > > 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. > > > > _______________________________________________ > > gem5-users mailing list -- gem5-users@gem5.org > > To unsubscribe send an email to gem5-users-le...@gem5.org > > > > 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. > > _______________________________________________ > > gem5-users mailing list -- gem5-users@gem5.org > > To unsubscribe send an email to gem5-users-le...@gem5.org > _______________________________________________ > gem5-users mailing list -- gem5-users@gem5.org > To unsubscribe send an email to gem5-users-le...@gem5.org > > 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. > > _______________________________________________ > gem5-users mailing list -- gem5-users@gem5.org > To unsubscribe send an email to gem5-users-le...@gem5.org > > 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. > _______________________________________________ > gem5-users mailing list -- gem5-users@gem5.org > To unsubscribe send an email to gem5-users-le...@gem5.org _______________________________________________ gem5-users mailing list -- gem5-users@gem5.org To unsubscribe send an email to gem5-users-le...@gem5.org 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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