Mike Meyer wrote:
On Sat, 17 May 2008 11:13:52 +0300
Andriy Gapon <[EMAIL PROTECTED]> wrote:
It seems that rdmsr instruction can be executed only at the highest
privilege level and thus is not permitted from userland. Maybe we should
provide something like Linux /dev/cpu/msr?
I don't like interface of that device, I think that ioctl approach would
be preferable in this case.
Something like create /dev/cpuN and allow some ioctls on it:
ioctl(cpu_fd, CPU_RDMSR, arg).
What do you think?
Ok, this points directly at a question I've been wondering about, but
haven't been able to find an answer in the google.
I've been mucking about with general access to sysctl's (a sysctl
plugin for gkrellm, and a python module for accessing sysctls), and
with that hammer in my hand, the nail for this problem is obviously a
dev.cpu.#.msr sysctl.
How can you request a rdmsr within the sysctl tree? I don't think sysctl
is appropriate here either.
--
Rui Paulo
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