1.fs模式需要两个额外的包
Full System Files : http://www.m5sim.org/dist/current/m5_system_2.0b3.tar.bz2
linux-dist : http://www.m5sim.org/dist/current/linux-dist.tgz
2.安装（gem5安装目录为cb@ubuntu:~/gem5$ ）
a）$ mkdir dist
b) 将包m5_system_2.03.tar.bz2 复制到dist目录
c) 解压 ~gem5/dist$ tar -xvf m5_system_2.03.tar.bz2
d）解压后的文件夹内容放到dist目录下
~/gem5/dist$ cd m5_system_2.0b3/
~/gem5/dist/m5_system_2.0b3$ mv./binaries/ ../binaries
~/gem5/dist/m5_system_2.0b3$ mv./disks/ ../disks
~/gem5/dist$ rm -rfm5_system_2.0b3
e)修改$GEM5/config/common/SysPath.py 文件：
把exceptKeyError:path = [ '/dist/m5/system', '/n/poolfs/z/dist/m5/system
修改成
except KeyError:
path = [ '/dist/m5/system', ' /home/<用户名>/gem5/dist' ]
3运行
进入gem5目录 ./build/ALPHA/gem5.opt ./configs/example/fs.py
gem5 Simulator System. http://gem5.org
gem5 is copyrighted software; use the --copyright option for details.
gem5 compiled Apr 18 2016 19:51:09
gem5 started Apr 20 2016 06:09:41
gem5 executing on ubuntu
command line: ./build/ALPHA/gem5.opt ./configs/example/fs.py
Global frequency set at 1000000000000 ticks per second
warn: DRAM device capacity (8192 Mbytes) does not match the address range assigned (512 Mbytes)
info: kernel located at: /home/cb/gem5/dist/binaries/vmlinux
Listening for system connection on port 3456
0: system.tsunami.io.rtc: Real-time clock set to Thu Jan 1 00:00:00 2009
0: system.remote_gdb.listener: listening for remote gdb #0 on port 7000
**** REAL SIMULATION ****
info: Entering event queue @ 0. Starting simulation...
warn: Prefetch instructions in Alpha do not do anything
warn: Prefetch instructions in Alpha do not do anything
4 开启新终端，使用M5Term来与simulatedsystem进行交互
~/gem5$cd ./util/term ~/gem5$make ~/gem5$sudo make install ~/gem5$m5term localhost 3456
ls
EXT2-fs warning: checktime reached, running e2fsck is recommended loading script... Script from M5 readfile is empty, starting bash shell... # ls benchmarks etc linuxrc modules sys usr bin iscsi lost+found proc testGem5 var dev lib mnt sbin tmp #
5 testGem5文件夹
1、将ALPHA下编译好的hello执行文件拷贝到当前路径（也可以自己交叉编译） ~/gem5$ cp./tests/test-progs/hello/bin/alpha/linux/hello ./hello 2、挂载 ~/gem5$ sudo mount -o,loop,offset=32256 ./dist/disks/linux-latest.img /mnt 偏移量32256=63*512 3、显示一下/mnt，可以看到挂载好的操作系统 ~@ubuntu:/mnt$ ls benchmarks dev iscsi linuxrc mnt proc sys usr bin etc lib lost+found modules sbin tmp var 4、加待运行的hello ~@ubuntu:/mnt$ sudo mkdir testGem5 ~@ubuntu:/mnt$ cd ../home/~/gem5/ ~@ubuntu:~/gem5$ sudo cp hello /mnt/testGem5 ~@ubuntu:~/gem5$ cd /mnt ~@ubuntu:/mnt$ ls benchmarks dev iscsi linuxrc mnt proc sys tmp var bin etc lib lost+found modules sbin testGem5 usr ~@ubuntu:/mnt$ ls testGem5 hello 5、 在使用linux的image文件之前，应该执行umount操作。 ~/gem5$ sudo umount /mnt
6.测试
1，运行fs模式./build/ALPHA/gem5.opt ./configs/example/fs.py
2，新终端，./util/term/m5term localhost 3456
# ls benchmarks etc linuxrc modules sys usr bin iscsi lost+found proc testGem5 var dev lib mnt sbin tmp # cd testGem5 # ls hello # ./hello Hello world! #
