On Tue May 6 18:26:58 EDT 2014, ccuiy...@gmail.com wrote: > Dear all, > > I was confused by one experiment which is done today. > My machine is x86_64 and I run Plan9 inside KVM. According to my > understanding, operating system should detect which hardware platform it is > running (x86, sparc, etc) and automatically invoke > corresponding arch-dependent codes. But, when I echo $cputypes, > it is 386! I also browse some kernel config file in /sys/src/9/pc, it seems > that plan9 forces to use 386 for Intel cpus (right?). Please tolerate if I > made stupid mistakes, I just wonder how to make a amd64 kernel? (My > hardware already supports that.)
good question. /sys/src/9/pc is a 386 kernel. it runs 386 code on anything that at least supports a 386 regardless of the hardware support. if you think about it, supporting more than one instruction set with a single kernel has some added difficulties. as cinap mentions, for a 64-bit kernel, your options are 9atom or 9front. since i work with 9atom, i'll speak to it. you can just install 64-bit with no muss or fuss, if the hardware is supported. let me know if there are issues. if you already have something working, then nevermind. :-) - erik
