初尝 64位 linux kernel

机器是athlon64的，不跑跑64bit linux实在不过瘾，于是下了个linux kernel 2.6.22.5自己编译看，一开始下载是想编译32位的，但是启动时有点小问题，中间会卡住，要不断按开机键才能继续，挺诡异的，但是64位的编译好后竟然没有这个问题了，比较有趣。

在编译前进行配置时倒是出了些问题，由于我要在32位系统下编译64位内核，是交叉编译，不是很熟练，查了半天在发现应该在make是加入ARCH=x86_64的参数。（ubuntu里习惯称amd64, 但linux内核里叫x86_64)

另外configure的时候也有问题，我直接make ARCH=x86_64总报错， make ARCH=x86_64 config也不行，后来想到，现在的.config是按i386配置的，可能跟64位的有冲突，于是用make ARCH=x86_64 oldconfig重新配置，别说，还真问了几个新问题，之后再make ARCH=x86_64就可以编译了，最后别忘了编译模块，再都安装就好了。

现在运行挺不错，但是aptitude不能找到64位程序，还有待研究。

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