Hello, this is an older thread and the beginning of my effort to set up FS simulation for running SPEC benchmarks on x86 gem5.
To do that, I totally followed the instructions given by Jason in his site : http://www.lowepower.com/jason/setting-up-gem5-full-system.html and I created an image of ubuntu-16.04 and the kernel version 4.8.13(using the config file provided by Jason). I also installed in the image the needed gem5-guest-tools. I can normally boot my image with qemu so then I went through to check that gem5 is also booting, before I use any .rcS files. I run the gem5 cmd: ./build/X86gem5.opt ./configs/example/fs.py --kernel=path_to_kernel --disk-image=path_to_ubuntu_image --cpu-type=AtomicSimpleCPU -n 1 --mem-size=2GB -fastmem --sys-clock=4GHz --cpu-clock=4GHz and then I do the telnet connection in another shell : telnet 127.0.0.1 3456 The connection is normally attached and the boot process starts. In around 10 min the file system is mounted and also the message "Welcome to Ubuntu.16.04" appears. Though, the boot process is not done yet and it keeps going for a lot of time. After around 5 hours it prints the message : Started gem5 init script. Starting Set console scheme... And then "Connection closed by foreign host" because on the part of the shell that gem5 cmd was executed, the command was killed. Except from the part that at the end the image did not boot, it even got 5 hours to reach this point. On my web search, it is mentioned that the boot up process normally would take 30 min. Can somebody help me on what I miss here please? Taking so long to boot (and not booting also after all) does not seem to be normal. Has anybody built a linux image and a kernel that they play along together and work normally with gem5. I would be grateful if somebody could give me his advice. Thank you very much in advance, -- Kleovoulos Kalaitzidis Doctorant - Équipe PACAP Centre de recherche INRIA Rennes - Bretagne Atlantique Bâtiment 12E, Bureau E321, Campus de Beaulieu, 35042 Rennes Cedex, France > From: "Kleovoulos Kalaitzidis" <kleovoulos.kalaitzi...@inria.fr> > To: "gem5 users mailing list" <gem5-users@gem5.org> > Sent: Tuesday, July 31, 2018 4:18:07 PM > Subject: Re: [gem5-users] How to associate a kernel offset to a linux image > for > full system simulation? > Hello, > thank you for your reply. Sorry for not mentioning the gem5 command, I > thought I > could omit it since > it is the basic/default. So, the command line is : > build/X86/build.opt configs/example/fs.py --kernel=/path_to_kernel > --disk-image==/path_to_image > In the fs.py file the command line option for kernel was already set to : > root=/dev/hda1 by default, > and you were right I changed that to the existing partition. But I am still > facing a segfault . > Hence, I will try to tackle it in another angle and if i find something > specific > and useful I will reply again. > Thanks again. > -- > Kleovoulos Kalaitzidis > Doctorant - Équipe PACAP > Centre de recherche INRIA Rennes - Bretagne Atlantique > Bâtiment 12E, Bureau E321, Campus de Beaulieu, > 35042 Rennes Cedex, France >> From: "Ciro Santilli" <ciro.santi...@gmail.com> >> To: "gem5 users mailing list" <gem5-users@gem5.org> >> Sent: Monday, July 30, 2018 5:31:26 PM >> Subject: Re: [gem5-users] How to associate a kernel offset to a linux image >> for >> full system simulation? >> Did you try to set the kernel command line option as the kernel suggested? >> root=/dev/hda2 >> root=/dev/sda2 >> Picking 2 as it is the larger partition. >> I recommend always giving the full gem5 command line when posting here. >> On Mon, Jul 30, 2018 at 4:00 PM, Kleovoulos Kalaitzidis < [ >> mailto:kleovoulos.kalaitzi...@inria.fr | kleovoulos.kalaitzi...@inria.fr ] > >> wrote: >>> I am trying to setup Gem5 for full system simulation on x86. Following >>> Jason's >>> tutorial, I have generated the image file for ubuntu 18.04. >>> Then for the kernel I did the following steps (with Jason's config): >>> make oldconfig >>> make vmlinux >>> This creates an executable called vmlinux which I use as the kernel for >>> fs.py. >>> After trying to run it and creating the telnet session, I get the following >>> errors (extracted the end of the messages): >>> Using kernel 4.8.13: >>> List of all partitions: >>> [ callto:0100%2016384 | 0100 16384 ] ram0 (driver?) >>> [ callto:0101%2016384 | 0101 16384 ] ram1 (driver?) >>> [ callto:0102%2016384 | 0102 16384 ] ram2 (driver?) >>> [ callto:0103%2016384 | 0103 16384 ] ram3 (driver?) >>> [ callto:0104%2016384 | 0104 16384 ] ram4 (driver?) >>> [ callto:0105%2016384 | 0105 16384 ] ram5 (driver?) >>> [ callto:0106%2016384 | 0106 16384 ] ram6 (driver?) >>> [ callto:0107%2016384 | 0107 16384 ] ram7 (driver?) >>> [ callto:0108%2016384 | 0108 16384 ] ram8 (driver?) >>> [ callto:0109%2016384 | 0109 16384 ] ram9 (driver?) >>> 010a 16384 ram10 (driver?) >>> 010b 16384 ram11 (driver?) >>> 010c 16384 ram12 (driver?) >>> 010d 16384 ram13 (driver?) >>> 010e 16384 ram14 (driver?) >>> 010f 16384 ram15 (driver?) >>> [ callto:0300%208192000 | 0300 8192000 ] hda driver: ide-gd >>> [ callto:0301%201024 | 0301 1024 ] hda1 >>> b3e8ba38-c801-461b-a765-d4ccb929b5df >>> [ callto:0302%208188928 | 0302 8188928 ] hda2 >>> b68ea151-df09-44cf-8b99-0875407a5b25 >>> No filesystem could mount root, tried: ext3 ext4 ext2 fuseblk >>> Kernel panic - not syncing: VFS: Unable to mount root fs on >>> unknown-block(3,1) >>> CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.8.13 #1 >>> Hardware name: , BIOS 06/08/2008 >>> 0000000000000001 ffffffff811e0a97 ffff88001e5bc000 ffffffff816ea24b >>> ffffffff810ae1b3 ffff880000000010 ffff88001ec57ec0 ffff88001ec57e58 >>> ffff88001ec57eb0 ffff88001ec57ec8 0000000000000012 0000000000000000 >>> Call Trace: >>> [<ffffffff811e0a97>] ? dump_stack+0x5d/0x79 >>> [<ffffffff810ae1b3>] ? panic+0xd3/0x20b >>> [<ffffffff818ad403>] ? mount_block_root+0x2a4/0x2bb >>> [<ffffffff818ad6fe>] ? prepare_namespace+0x161/0x197 >>> [<ffffffff818ad052>] ? kernel_init_freeable+0x182/0x18b >>> [<ffffffff8141bbb7>] ? kernel_init+0x5/0xe6 >>> [<ffffffff814207bf>] ? ret_from_fork+0x1f/0x40 >>> [<ffffffff8141bbb2>] ? rest_init+0x69/0x69 >>> Kernel Offset: disabled >>> ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on >>> unknown-block(3,1) >>> Using Kernel 4.17.9: >>> [ 0.413939] VFS: Cannot open root device "hda1" or unknown-block(0,0): >>> error -6 >>> [ 0.413951] Please append a correct "root=" boot option; here are the >>> available >>> partitions: >>> [ 0.413966] [ callto:0800%208192000 | 0800 8192000 ] sda >>> [ 0.413967] driver: sd >>> [ 0.413982] [ callto:0801%201024 | 0801 1024 ] sda1 >>> b3e8ba38-c801-461b-a765-d4ccb929b5df >>> [ 0.413983] >>> [ 0.414000] [ callto:0802%208188928 | 0802 8188928 ] sda2 >>> b68ea151-df09-44cf-8b99-0875407a5b25 >>> [ 0.414001] >>> [ 0.414018] Kernel panic - not syncing: VFS: Unable to mount root fs on >>> unknown-block(0,0) >>> The problem seems to be during the creation of the kernel, where I do not >>> install any driver. Jason mentions that I should probably need to install >>> some >>> drivers/software, but they are not specified. >>> From what I've seen on the internet it is likely to be a filesystem driver >>> missing or an incompatibility of kernel and linux version. >>> Would anyone be able to give directions on how to understand and solve this >>> issue? >>> -- >>> Kleovoulos Kalaitzidis >>> Doctorant - Équipe PACAP >>> Centre de recherche INRIA Rennes - Bretagne Atlantique >>> Bâtiment 12E, Bureau E321, Campus de Beaulieu, >>> 35042 Rennes Cedex, France >>> _______________________________________________ >>> gem5-users mailing list >>> [ mailto:gem5-users@gem5.org | gem5-users@gem5.org ] >>> [ http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users | >>> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users ] >> _______________________________________________ >> gem5-users mailing list >> gem5-users@gem5.org >> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > _______________________________________________ > gem5-users mailing list > gem5-users@gem5.org > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
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