Re: [PATCH V7 00/18] KVM: x86/pmu: Add *basic* support to enable guest PEBS via DS

Like Xu
2021-07-12T10:34:37Z

On 12/7/2021 9:37 am, Liuxiangdong wrote:
> Hi， Lingshan.
>
> We can use basic pebs for KVM Guest on ICX by this patches set. Will we
> consider supporting "perf mem" for KVM Guest?
>

I suggest we can enable more advanced PEBS features
after the basic support hits the mainline.

> AFAIK, the load latency facility requires processor supporting PEBS.
> Besides, it needs MSR_PEBS_LD_LAT_THRESHOLD
> msr (3F6H) to specify the desired latency threshold. How about
> passthrough this msr to Guest?
>
> Thanks!
> Xiangdong Liu
>
>