Nikolaos & Gem5 community, Thanks for the detailed instructions to run Full system with NICs with #COSSIM edits. My project partner and I tried all the way to the end. Both are experiencing /dev/mem problem as below. We've tried different ways to change to root owner and chmod, but with no luck
Any help on how to proceed? Thanks in advance $ sudo chroot . Starting gem5 init... reading run script file. Can't open /dev/mem: Operation not permitted Failed to run m5 readfile, exiting! Can't open /dev/mem: Operation not permitted m5 exit failed, dropping to shell. # m5 readfile Can't open /dev/mem: Operation not permitted # whoami root # ls -l /dev/mem crw-r----- 1 root kmem 1, 1 Jun 8 10:38 /dev/mem # chown root:kmem /dev/mem # m5 readfile Can't open /dev/mem: Operation not permitted # chmod 660 /dev/mem # m5 readfile Can't open /dev/mem: Operation not permitted # chown root:kmem /dev/mem # # m5 readfile Can't open /dev/mem: Operation not permitted # chmod 666 /dev/mem # ls -l /dev/mem crw-rw-rw- 1 root kmem 1, 1 Jun 8 10:38 /dev/mem # # m5 readfile Can't open /dev/mem: Operation not permitted -----Original Message----- From: Νικόλαος Ταμπουρατζής <ntampourat...@ece.auth.gr> Sent: Wednesday, May 11, 2022 12:10 PM To: The gem5 Users mailing list <gem5-users@gem5.org> Subject: [gem5-users] Re: IGbE / Intel 8254x - NIC support on Gem5? Dear rshankar, As I know, the NIC in gem5 is worked only with Full System (FS) mode in order to load the correct drivers etc. You can add the following in order to add the NIC in FS mode: https://github.com/H2020-COSSIM/cgem5/blob/main/src/dev/x86/SouthBridge.py (see the lines with #COSSIM) https://github.com/H2020-COSSIM/cgem5/blob/main/configs/common/FSConfig.py (lines 636, 674-676) Build the gem5. You need download the vmlinux-5.4.49 kernel from here: https://github.com/gem5/gem5-resources/tree/stable/src/linux-kernel You need download the x86-ubuntu.img image from here: http://dist.gem5.org/dist/v21-2/images/x86/ubuntu-18-04/x86-ubuntu.img.gz Mount the x86-ubuntu.img and add the gem5_init.sh in /root using: sudo mount -o loop,offset=1048576 x86-ubuntu.img /mnt cd /mnt sudo mount --bind /proc /mnt/proc sudo mount --bind /dev /mnt/dev sudo chroot . cd root nano gem5_init.sh #Add the following script: #!/bin/bash # Copyright (c) 2021 The University of Texas at Austin. # SPDX-License-Identifier: BSD 3-Clause echo "Starting gem5 init... reading run script file." if ! m5 readfile > /tmp/script; then echo "Failed to run m5 readfile, exiting!!" rm -f /tmp/script if ! m5 exit; then # Useful for booting the disk image in (e.g.,) qemu for debugging echo "m5 exit failed, dropping to shell." /bin/sh fi else echo "Running m5 script from /tmp/script !!" chmod 755 /tmp/script /tmp/script echo "Done running script, exiting." rm -f /tmp/script /bin/sh #m5 exit fi exit # now we are back to the host system cd sudo umount /mnt/proc sudo umount /mnt/dev sudo umount /mnt Now, you may use this cmd to start the FS execution: /home/cossim/COSSIM/cgem5/build/X86/gem5.fast --listener-mode=on /home/cossim/COSSIM/cgem5/configs/example/fs.py --kernel=vmlinux-5.4.49 --disk-image=x86-ubuntu.img --dual The 1st terminal is in 3456 port (telnet 127.0.0.1 3456) The 2nd terminal is in 3457 port (telnet 127.0.0.1 3457) After boot, you need add the localhost and IP in both terminals (eg. ifconfig lo 127.0.0.1 & ifconfig eth0 10.0.1.x), where x 2 and 3). You can use "ping -c 1 10.0.1.x" to check the functionality. If you use the above steps in your work, refer to the following COSSIM paper, please: https://dl.acm.org/doi/10.1145/3378934 If someone has configured the NIC with SE mode, please give us details! :) Best regards, Nikolaos Tampouratzis Quoting rshank...@austin.rr.com <mailto:rshank...@austin.rr.com> : > Hello, > > > > I'd like to add a NIC to simple Gem5 model derived from two_level.py > running in SE mode, x86 CPU. > > Is this supported in Gem5? > > > > Per COSSIM version of gem5 (aka cgem5) states below. I'd like to stay > on > Gem5 - so any guidance here is appreciated. > > > > GitHub - H2020-COSSIM/cgem5: Modified GEM5 March 2022 release > <https://github.com/H2020-COSSIM/cgem5> > > > > In GEM5's publicly available repositories, the only network interface > card implemented, tested and verified is the Intel 8254x based gigabit > Ethernet adapter. It is provided as a PCI GEM5 network device using > the e1000 Linux driver. > > However, the latest version of GEM5 supports this real-network device > only on ARM-based architectures. In the scope of COSSIM, GEM5 has been > recently modified so as to support the Intel 8254x network card for > the x86 ISA _______________________________________________ gem5-users mailing list -- gem5-users@gem5.org <mailto:gem5-users@gem5.org> To unsubscribe send an email to gem5-users-le...@gem5.org <mailto:gem5-users-le...@gem5.org>
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