Re: [PATCH] x86/rapl: Do not load in a guest

Jacob Pan
2015-12-04T17:52:14Z

On Fri, 4 Dec 2015 09:22:56 +0100
Peter Zijlstra <peterz@infradead.org> wrote:

> Also, yuck @ powercap/intel_rapl.c for doing rdmsr_on_cpu() +
> wrmsr_on_cpu() all over the place.
Can you please be more specific? is the concern related to the
overhead of IPI? I am doing these calls based on MSR CPU scope and
consider the fact that access is less frequent.

Thanks,

Jacob