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SubjectRe: [PATCH v3 07/18] x86/intel_rdt: Add Haswell feature discovery
On Sun, Oct 09, 2016 at 10:09:37AM -0700, Fenghua Yu wrote:
> The MSR is not guaranteed on every stepping of the family and model machine
> because some parts may have the MSR fused off. And some bits in the MSR
> may not be implemented on some parts. And in KVM or guest, the MSR may not
> implemented. Those are reasons why we use wrmsr_safe/rdmsr_safe in Haswell
> probe.

Please add that info in a comment somewhere there as we'll all forget
about it otherwise.



SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)

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