Hasan Rashid wrote:
Maxim, HPA,
I loaded the module msr.o and when I try to use wrmsr or rdmsr from the msr
tools I get rdmsr: open: No such device. It seems like device doesn't
register upon module load. I have created the devices on the system using
mknod. Meaning /dev/cpu/msr is there and I changed the appropriate path in
the msr.c(module) and wrmsr.c (utlity) file.
What would prompt this error message?
/dev/cpu/msr is bogus. It should be /dev/cpu/0/msr etc.
Sounds like your version of udev might be out of date, or you're using
an old kernel which doesn't communicate /dev/cpu/* to udev properly.
Revert your hacks and, if you have to create the nodes manually, use the
MAKEDEV script included with the msr-tools.
-hpa
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