Re: [PATCH v6 07/16] KVM: x86/pmu: Reprogram PEBS event to emulate guest PEBS counter

[Andi Kleen]

> By "precdist", do you mean the"Precise Distribution of Instructions 
> Retired (PDIR) Facility"?


This was referring to perf's precise_ip field


> The SDM says Ice Lake Microarchitecture does support PEBS-PDIR on 
> IA32_FIXED0 only.
> And this patch kit enables it in the patch 0011, please take a look.
>
> Or do I miss something about precdist on ICL ?


On Icelake everything is fine

It just would need changes on other CPUs, but that can be done later.


-Andi