> I'm not an expert myself w.r.t MSRs but of what I know, you can access the > MSRs through /dev/cpu/x/msr Thanks a lot for the info. The problem I found is I can modify some bits of the MSR, other than those that will disable the caches, without any problem. After writing to the register, I can also read back and see what I have changed. However, as soon as I change the bits trying to disable CPU caches, the machine either reboot or hangs immediately. Then I guess maybe Linux does not allow to do this? I also google for a while but cannot find similar problems. For configuration of the kernel, some architectures like ARM supports NO-CACHE when loading, but for i386 I cannot find any:( Yang -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
