Messages in this thread | | | Date | Fri, 29 Nov 2013 21:31:03 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH v7 3/4] perf,x86: add Intel RAPL PMU support |
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On Fri, Nov 29, 2013 at 09:09:46PM +0100, Stephane Eranian wrote: > > So in theory it would be harmless to export the values even if not > > supported. What is the worst failure mode? That somehow a recent CPU > > doesn't support the MSR and we get a GPF when trying to access it? > > > Yes. I think that's what you get with DRAM on client for instance.
We have rdmsr_safe for non-existent MSRs, in case touching such is the issue.
-- Regards/Gruss, Boris.
Sent from a fat crate under my desk. Formatting is fine. --
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