You could download from:
http://www.gem5.org/documentation/general_docs/fullsystem/guest_binaries
section "Latest Linux Disk Images (recommended)"
Personally I normally use Buildroot:
Can you also try to use the full path to vmlinux.arm64 instead of just
basename? I suspect it is currently searching for it on M5_PATH
(because not slashes in the path) and finding some broken image there.
Better still, get rid of M5_PATH altogether if possible.
My full non minimized CLI with
I don't know exactly what is going on, but I've tested
aarch-system-201901106/binaries/vmlinux.arm64 in fs.py and it worked
fine.
So the exact same script works with the old kernel but not new one?
Are you sure that the kernel exists at that path? Also try to GDB/PDB
debug it a bit.
On Sat, Apr
OK, also quick grep in kernel code and we can see that -8 and -13 are
the same as exec syscall error numbers:
#define ENOEXEC 8 /* Exec format error */
#define EACCES 13 /* Permission denied */
not 100% sure what those mean, but worth looking into as well.
On Sat, Apr 25, 2020 at 7:13 PM Ciro
No worries. I would mount the image on host and ensure that the init
you think is there is actually there, and that it seems to be right
filetype (ISA is ARM, is executable, etc.). And ensure that you are
pointing to it with init= kernel CLI parameter. If you don't
understand from that, GDB step
Try libguestfs-tools:
https://askubuntu.com/questions/107228/how-to-resize-virtual-machine-disk/481887#481887
It is the easiest method. I think it boots QEMU, mounts the image, and
does the resizing operations for you.
You may need to add sudo to commands due to this bug:
Maybe you want to look into: m5 readfile, 9P or use two disks as
mentioned at:
https://cirosantilli.com/linux-kernel-module-cheat/#gem5-restore-new-script
On Sun, May 17, 2020 at 9:20 PM HENG ZHUO via gem5-users
wrote:
>
> Hi,
>
> I am trying to run some benchmark on ARM full system simulation.
Maybe did you mean to use -ExecMicro to remove microops rather than
-ExecMacro? E.g. one STP generates 4 microops as shown at:
https://cirosantilli.com/linux-kernel-module-cheat/#gem5-execall-trace-format
On Wed, May 6, 2020 at 8:54 PM Øivind Harket Bakke via gem5-users
wrote:
>
> Hi all,
>
>
There is no stupid question around here, ask away :-)
On Wed, May 6, 2020 at 10:33 PM Øivind Harket Bakke via gem5-users
wrote:
>
> Dear Santilli,
>
> that fixed everything except my embarrassment.
> Thank you very much, really appriciated!
>
> Best regards,
> Øivind
>
Can you provide the URL at which the avatar you refer to is showing?
On Fri, Oct 2, 2020 at 6:55 AM 1154063264--- via gem5-users
wrote:
>
> First of all, I thank him for answering my question. However, as a Chinese,
> his profile picture does not respect our country. If my behavior affects
>
One thing to try, that program looks like it needs --num-cpus=5 as it spawns 4
threads (so main + 4 total).
From: Bobby Bruce via gem5-users
Sent: Thursday, October 15, 2020 10:13 PM
To: gem5 users mailing list
Cc: Farhad Yusufali ; Bobby Bruce
Subject:
This gives some pointers on the SimObject Python/C++ interaction which
might clarify things:
https://stackoverflow.com/questions/62969566/attributes-of-system-object-in-gem5/62970092#62970092
On Tue, Aug 25, 2020 at 2:21 PM Dwaipayan Ray via gem5-users
wrote:
>
> Hello Everyone,
>
> I am very
Functional reads in Ruby SE are a known and hard to solve problem, see
https://gem5.atlassian.net/browse/GEM5-675 and
https://gem5.atlassian.net/browse/GEM5-676
On Tue, Aug 18, 2020 at 6:33 PM VIPIN PATEL via gem5-users
wrote:
>
> Hi All,
>
> I using the GEM5 simulator to collect statistics of a
I'm not sure about the cache hierarchy issue.
But about Ruby support, I don't think there's any known ARM specific problem,
and ARM contributors have been specifically pushing Ruby recently, see e.g. see
Tiago's CHI announcement: https://www.gem5.org/2020/05/29/flexible-cache.html
Please provide fuller reproduction details.
On Thu, Oct 1, 2020 at 8:39 AM 1154063264--- via gem5-users
wrote:
>
> I am trying to run parsec in MESI_Three_Level-gem5.opt for ARM architecture
> in FS mode, but I am getting a segmentation fault.
>
> info: Entering event queue @ 25592214185500.
GEM5/issues) to
>>>> see if anything similar has been
>>>> reported. If you can't find any similar issues, we welcome your
>>>> question, but it's most helpful when we can reproduce the problem :).
>>>> 4. The gem5 project has a code of conduct (
>>>
e can reproduce the problem :).
>>> 4. The gem5 project has a code of conduct (
>>> https://gem5.googlesource.com/public/gem5/+/refs/heads/stable/CODE-OF-CONDUCT.md).
>>> Specifically it says our standards include "Demonstrating empathy and
>>> kindness towa
Also have a look at --debug-flags SyscallBase,SyscallVerbose
On Tue, Sep 22, 2020 at 8:26 PM ABD ALRHMAN ABO ALKHEEL via gem5-users
wrote:
>
> Hi All, can I track the read()/write() system calls in GEM5 in SE mode? If
> so, how I can do that? Any help would be appreciated. Thanks
>
Hi Wenqi,
Have you tried:
https://stackoverflow.com/questions/62757008/how-to-use-m5-in-gem5-20/62759204#62759204
or has something changed since then too? Seems to work on develop just now.
From: wqyin--- via gem5-users
Sent: Sunday, October 25, 2020 7:36 PM
On full system you can also try to instrument the syscall function symbol, we
do something analogous for panic detection:
https://github.com/gem5/gem5/blob/f28b2e773f2ee97bf9c755b33aef9befc052d281/src/arch/arm/linux/fs_workload.cc#L207
From: ABD ALRHMAN ABO
Hi,
I have m5_exit working on a C program at
https://gem5.googlesource.com/public/gem5-resources/+/refs/heads/stable/src/simple/m5_exit.c#41
but now I wanted to create one using the memory address version.
We already have a m5_exit_addr symbol defined in the library, but I couldn't
find it
To compile kernel see e.g.:
https://raspberrypi.stackexchange.com/questions/192/how-do-i-cross-compile-the-kernel-on-a-ubuntu-host
but replace arm with arm64 and the compile with the aarch64 one for 64-bit
arm. All other ISAs are analogous.
The ARM configs are in-tree of the official arm gem5
Does it crash immediately? If so, provide to us and look at the
backtrace to try and determine which allocation fails. If that doesn't
help, you can also try techniques mentioned at:
https://stackoverflow.com/questions/6261201/how-to-find-memory-leak-in-a-c-code-project/57877190#57877190
On Thu,
It might be the same as: https://gem5.atlassian.net/browse/GEM5-711 I want to
investigate that soon hopefully.
If you try Ruby and it fails, please open a separate bug, we want it to work as
well
From: Sebastian Block via gem5-users
Sent: Friday, August 7,
Hi Yichao,
How are you counting the instructions? --debug-flags ExecAll? If so, are you
excluding pseudo instructions with --debug-flags ExecAll,ExecMicro?
From: Liyichao via gem5-users
Sent: Monday, August 10, 2020 5:29 AM
To: gem5-users@gem5.org
Cc: Liyichao
I recommend that you have a look at the source of how AtomicSimpleCPU
does an ifetch under Eclipse. It should be easy to understand
everything quickly from there.
The Packet address is physical (which notably what caches and DRAM
work on), just have a look at the constructor of packet:
We have to understand the root cause to be sure, it often happens that memory
errors are just hidden by random changes. Let's move all discussion to that
ticket. I've started dumping some logs for it and linked to the ticket BTW.
From: Sebastian Block
Sent:
I'm not aware of this, please provide further reproduction details on JIRA
(which kernel, full gem5 CLIs, gem5 git version) and we'll have a look.
From: Choe, Jiwon via gem5-users
Sent: Wednesday, July 8, 2020 5:35 PM
To: gem5 users mailing list
Cc: Choe, Jiwon
Also, in ARM more specifically, you can see miscregs at
https://github.com/gem5/gem5/blob/cc3e12b504c20b3bc78db52059d3f4f9b02dfbe8/src/arch/arm/miscregs.hh#L56
Most are what the ARM manuals call "System Registers", but a few
others are just convenient ways to implement other ISA features like
Shehab, sorry for the delay, I had to check a few things about this,
First, are you aware that there is a not-yet-merged patch that implements a two
level TLB at:
https://github.com/giactra/gem5/commit/3022ecc8a06a9182b2cf1936941901a785c1b21d
?
It hasn't been merged because we noticed that it
SE I suppose? It seems that the benchmark ends normally with an exit
syscall, I would start by looking at --debug-flags SyscallBase to
double check that.
Then if that is the case, the only explanation is that some value is
getting corrupted somewhere due to a gem5 bug. So I would try to: 1)
Describe your model briefly here/discuss on a review request if you
already have code? :-)
On Thu, Jul 2, 2020 at 11:39 PM Anuj Falcon via gem5-users
wrote:
>
> How to know if my CPU model qualifies to be upstreamed with the rest of the
> CPU models in gem 5 ?
>
Forwarding reply to mailing list.
-- Forwarded message -
From: Anuj Falcon
Date: Fri, Jul 3, 2020 at 8:05 AM
Subject: Re: [gem5-users] How to check ...
To: Ciro Santilli
Below is the link to the GEM5 model. (Public)
https://gitlab.com/shaktiproject/tools/core-models-gem5
On
Related:
https://stackoverflow.com/questions/58886672/bad-function-call-m5-event-simulateargs-kwargs-when-running-full-system-b
On Fri, Jul 10, 2020 at 1:44 AM Aditya Narayan via gem5-users
wrote:
>
> Hi,
>
> I am running into issues when using the script "hack_back_ckpt.rcS" to create
> a
One option might be to --debug-flags Registers and look up to latest
register modification. See also --debug-help.
On Thu, Jul 9, 2020 at 6:19 PM Shougang Yuan via gem5-users
wrote:
>
> Hi, All,
>
> I want to dump out the source register and destination register value of each
> instruction.
Syscall emulation or full system?
On Sun, Jun 7, 2020 at 10:01 PM Shougang Yuan via gem5-users
wrote:
>
> HI, All,
>
> I am trying to run some benchmarks that need some shared libs, and these
> shared libs are imported by setting the environment variables
> "LD_LIBRARY_PATH" if I run it on
--redirects can be used multiple times. But not 100% sure it will be
able to replace LD_LIBRARY_PATH. Just one thing worth trying along
--redirects /path/in/ld/libray/path=/usr/lib --env does change env
vars, but not 100% sure is it enough to make LD_LIBRARY_PATH work. In
theory it might, but not
Have you tried --redirects as mentioned at
https://stackoverflow.com/questions/5054/how-to-run-a-dynamically-linked-executable-syscall-emulation-mode-se-py-in-gem5/50696098#50696098
?
On Mon, Jun 8, 2020 at 2:31 PM Shougang Yuan wrote:
>
> In syscall emulation mode. I tried to use --env
OK, the previous --redirects idea makes no sense, nevermind, I wish I
could edit emails.
On Mon, Jun 8, 2020 at 4:39 PM Ciro Santilli wrote:
>
> --redirects can be used multiple times. But not 100% sure it will be
> able to replace LD_LIBRARY_PATH. Just one thing worth trying along
> --redirects
--redirects /lib64=/path/to/where/you/symlinked/everything
The linker will search in /lib64 normally, then gem5 will redirect
that file read to the path with all symlinks.
On Tue, Jun 9, 2020 at 3:26 PM Shougang Yuan wrote:
>
> Hi, Crio,
>
> Could you please give more hints about redirect
Hmmm, it is there on develop:
https://github.com/gem5/gem5/blob/96fce476785a834f102ae69a895e661cf08e47cd/configs/common/Options.py#L402
On Tue, Jun 9, 2020 at 4:31 PM Shougang Yuan wrote:
>
> I tried as you said, but the error message is "error: no such option:
> --redirects", and I check the
Are you mounting and modifying the disk on the host while gem5 is
using it at the same time? That likey cannot work because the Linux
kernel representation of guest and host will differ. Also gem5 does
not write back to disk.
The file sharing mechanisms I know to modify guest visible files from
It does look like your host's library is not compatible with whatever
was used to compile that C hello world.
You can't in general download and run dynamically linked programs
built for other toolchains, you either have to build it yourself
(often the easiest thing to do) or somehow obtain a
One thing to try if you are desperate: symlink every needed shared
library into a directory, and then redirect /lib64 or that directory.
I'm pretty sure this should work.
I'm not sure why LD_LIBRARY_PATH does not work. I would dig dieeper
and try to understand that, theoretically it feels like it
Why wouldn't it work :-)? Have you tried/how it fails? How did
execution terminate Ctrl + C or a guest event?
On Sat, Jul 25, 2020 at 7:13 AM as3mx--- via gem5-users
wrote:
>
> Hi
>
> I wanted to know if it is possible to resume the checkpoint generation from
> the last checkpoint generated.
Hi, is this different from:
https://www.mail-archive.com/gem5-users@gem5.org/msg18093.html If not,
please don't repost so soon, and ping previous thread instead. I'm
preparing to learn/ask around if no one replies.
On Sun, Jul 26, 2020 at 9:08 AM faridehziaee via gem5-users
wrote:
>
>
>
> Hi
Welcome back Nathanael!
We put great importance on ARM Linux kernel boot, and we try to make it so that
it either works or at least we have a bug report for it.
I reproduce the problem with VExpress_GEM5_V2 but not VExpress_GEM5_V1, opening
a but for V2 at:
https://stackoverflow.com/questions/61656709/how-to-setup-eclipse-ide-for-gem5-development
On Mon, Jul 20, 2020 at 12:25 PM Muhammad Aamir via gem5-users
wrote:
>
> Hi everyone,
>
> I have been following this
>
On Sat, Aug 15, 2020 at 6:44 PM Chandrahas Tirumalasetty via
gem5-users wrote:
>
> Hello,
> I am trying to restore from a checkpoint (created with AtomicSimpleCPU) with
> cpu-type DerivO3CPU in my gem5 setup. I have two questions mainly
>
> Is it allowed to create a checkpoint with
On Sat, Aug 15, 2020 at 9:54 PM ABD ALRHMAN ABO ALKHEEL
wrote:
>
> Hi Ciro,
>
> Could you tell me where can i find the file that does an ifetch for
> AtomicsimpleCPU in gem5?
>
https://github.com/gem5/gem5/blob/fa70478413e4650d0058cbfe81fd5ce362101994/src/cpu/simple/atomic.cc#L673
up to
BTW I pushed a patch exposing m5_exit_addr at:
https://gem5-review.googlesource.com/c/public/gem5/+/36896
And after that this should work on KVM
https://gem5-review.googlesource.com/c/public/gem5-resources/+/36677/1
From: Gabe Black via gem5-users
Sent:
Daniel, if you manage to reproduce on clean develop, please also open an issue
at https://gem5.atlassian.net/jira/software/c/projects/GEM5/issues I'd also be
curious to see if it reproduces on se.py (so I could see if it also happens on
ARM).
We've had some ARM-specific SE issues e.g. at
Yes, I had also previously observed that debug symbols make the huge majority
of the executable's size, and for some reason much more so in .opt than in
debug (presumably it takes more information to map back optimized code to
source).
You can confirm that by using strip gem5.opt or gcc- s
This is one of the things I've never had the patience to figure out, some ideas:
* investigate in QEMU first as it is much faster
* look into busybox's init code
From: Chao Fu via gem5-users
Sent: Wednesday, November 4, 2020 3:12 PM
To:
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