最近在学驱动模块，平台是ARM，因为课上老师讲的有点显浅，所以打算自己再深入研究一下。

所以在虚拟机里面装了ubuntu，打算用来深入学习。

目前的版本是

# uname -a

Linux ubuntu-ldm 4.4.0-28-generic #47-Ubuntu SMP Fri Jun 24 10:09:13 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

我已经安装了以下的包

# dpkg -l | grep linux

ii console-setup-linux 1.108ubuntu15 all Linux specific part of console-setup

ii libselinux1:amd64 2.4-3build2 amd64 SELinux runtime shared libraries

ii linux-base 4.0ubuntu1 all Linux image base package

ii linux-firmware 1.157.2 all Firmware for Linux kernel drivers

ii linux-generic 4.4.0.28.30 amd64 Complete Generic Linux kernel and headers

ii linux-headers-4.4.0-28 4.4.0-28.47 all Header files related to Linux kernel version 4.4.0

ii linux-headers-4.4.0-28-generic 4.4.0-28.47 amd64 Linux kernel headers for version 4.4.0 on 64 bit x86 SMP

ii linux-headers-generic 4.4.0.28.30 amd64 Generic Linux kernel headers

ii linux-image-4.4.0-28-generic 4.4.0-28.47 amd64 Linux kernel image for version 4.4.0 on 64 bit x86 SMP

ii linux-image-extra-4.4.0-28-generic 4.4.0-28.47 amd64 Linux kernel extra modules for version 4.4.0 on 64 bit x86 SMP

ii linux-image-generic 4.4.0.28.30 amd64 Generic Linux kernel image

ii linux-libc-dev:amd64 4.4.0-28.47 amd64 Linux Kernel Headers for development

ii linux-sound-base 1.0.25+dfsg-0ubuntu5 all base package for ALSA and OSS sound systems

ii linux-source 4.4.0.28.30 all Linux kernel source with Ubuntu patches

ii linux-source-4.4.0 4.4.0-28.47 all Linux kernel source for version 4.4.0 with Ubuntu patches

ii util-linux 2.27.1-6ubuntu3.1 amd64 miscellaneous system utilities

并且将/usr/src/linux-source-4.4.0.tar.bz2解压到/home/test/WorkSpace/Kernel/linux-source-4.4.0下

然后写了一个小小的测试程序

#include

#include

MODULE_LICENSE("Dual BSD/GPL");

static int hello_init (void) {

printk (KERN_ALERT "Hello, World\n");

return 0;

}

static void hello_exit (void) {

printk (KERN_ALERT "Goodbye, cruel world\n");

}

module_init (hello_init);

module_exit (hello_exit);

Makefile

obj-m += module.o

module-objs := hello.o

all:

make modules M=`pwd` -C /home/test/WorkSpace/Kernel/linux-source-4.4.0

clean:

make modules clean M=`pwd` -C /home/test/WorkSpace/Kernel/linux-source-4.4.0

令我不解的是

# sudo insmod module.ko

insmod: ERROR: could not insert module module.ko: Invalid module format

实在想不通为何没法装载这个内核模块？

是因为我用错了版本的源码嘛？

难道是要用自己编译的uImage来启动系统才可以嘛？

要如何自己手动编译替换Ubuntu的内核？