Well that's just a straight `patch -R' of the patch which added the wrmsr's.
> That (along with benchmarking of system call numbers - the stack switch at
> system call run-time ends up being quite expensive on a P4) was what made
> me decide to do the traditional "write MSR in schedule" approach, even
> though I agree that it would be much nicer to not have to rewrite that
> stupid MSR all the time.
>
> It doesn't show up on lmbench (insufficient precision), but your AIM9
> numbers are quite interesting. Are they stable?
>
Seem to be, but more work is needed, including oprofiling. Andi is doing
some P4 testing at present.
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